The Notion of Value in the Global Academic Discourse: Identification and Representation in the Main Approaches to Cultural Heritage Preservation

Abstract

This study examines how the notion of value is defined, recognised, and operationalised within the four main approaches to cultural heritage preservation: the material-based, value-based, living heritage, and historic urban landscape approaches. Positioned within the broader discourse on the evolving understanding of cultural heritage—from fixed, expert-driven interpretations toward more contextual, socially constructed, and participatory perspectives—this research aims to address which value types are recognised, and how and to what extent they are operationalised by applying four main approaches to cultural heritage preservation. The methodology comprises four phases: (1) the identification, search, and selection of academic articles in the Scopus database, (2) sample overlapping and elimination of duplicates to establish a final dataset, (3) bibliometric analysis to determine publishing trends and disciplinary reach, and (4) content analysis to identify, classify, and compare value types across the selected approaches. The results reveal significant variation in how values are represented, as well as notable inconsistency in their direct inclusion in research processes. While cultural, historical, aesthetic, social, and economic values dominate across approaches, only a fraction of studies operationalise values through defined criteria or indicators. The findings highlight the absence of consensus in value interpretation and emphasise the need for more systematic, integrative, and operationalisable frameworks for treating values in the process of cultural heritage preservation.

1. Introduction

1.1. Renewing the Discourse on Cultural Heritage’s Values

Researching the notion of value within the academic domain represents a continuation of the analysis initiated through the identification, systematisation, and review of relevant data sources verified and/or published by renowned international organisations engaged in global cultural heritage preservation [1]. Among them, the leading organisations include UNESCO [2], ICOMOS [3], ICCROM [4], the Council of Europe [5], and the Architects’ Council of Europe [6], while the various types of documents they have verified and/or published represent an attempt at a global reconciliation of ideas, principles, approaches, and guidelines for practical action on cultural heritage. Although the need for a global concession of practices concerning cultural heritage preservation was initiated in 1931 [7] and established in 1964 [8], clearer steps towards the definition of cultural heritage were made in 1972 with the Convention Concerning the Protection of the World Cultural and Natural Heritage [9]. It introduced the first division of heritage into natural (natural features, geological and physiographical formations, and natural sites) and cultural (monuments, groups of buildings, and sites) [9] (Articles 1, 2, p. 2). For this research problem and subject, of particular importance is the formulation “which are of outstanding universal value”, which constitutes an integral part of the definitions for both natural and cultural heritage [9] (Articles 1–2, p. 2). Although the issue of cultural heritage values, initiated by the work of Alois Riegl in the 19th century [10], has been continuously examined [1,11,12,13,14,15,16,17], it has become especially prominent through the formulation “outstanding universal value”. The importance of the notion of value was further confirmed in 1994 by the Nara Document on Authenticity, which emphasises that “conservation of cultural heritage in all its forms and historical periods is rooted in the values attributed to the heritage” [18] (Article 9, p. 2). Thanks to the Nara Document on Authenticity, the existence of values associated with a specific monument, group of buildings, or site becomes a prerequisite for its recognition as a part of cultural heritage, while the principle of authenticity—as our ability to understand the cultural heritage values in relation to the credibility and truthfulness of the source of information—has emerged as an “essential qualifying factor concerning values” [18] (Articles 9–10, p. 2). The issue of cultural heritage values becomes inseparable from the principle of authenticity, as further confirmed by the Declaration of San Antonio [19]. Its particular importance lies in understanding the principle of authenticity in relation to identity, history, materials, and social value, as well as the authenticity in dynamic and static sites, stewardship, and economics [19] (pp. 1–5), highlighting the complexity of the various factors that must be taken into account when researching cultural heritage and determining the credibility of its values.

Furthermore, within the Operational Guidelines for the Implementation of the World Heritage Convention, the principle of authenticity is considered through material, workmanship, design, and setting [12] (pp. 66–74). The Guidelines place particular emphasis on “outstanding universal value” and its identification, which determines the cultural heritage to be recognised as of outstanding significance to humanity and inscribed on the World Heritage List [20], thereby receiving special treatment in terms of protection and preservation [12] (p. 13). In this context, the role of the World Heritage Committee is of significant importance in identifying the “outstanding universal value” of a particular monument, group of buildings, or site, and in the decision-making regarding its inscription on the World Heritage List. To ensure an optimal level of objectivity in decision-making, a set of criteria for determining “outstanding universal value” has been defined [12] (pp. 6–8), and subsequently supplemented in accordance with new knowledge and practical experience [21,22,23].

The further development of heritage studies has pointed to the risks of applying a fixed set of criteria for determining “outstanding universal value” as globally applicable, yet defined within a Western European value system [24] (p. 11). This implies the potential non-recognition and, consequently, the loss of heritage values that are context-specific, as further confirmed by the Charter—Principles for the analysis, conservation and structural restoration of architectural heritage which states that the “value and authenticity of architectural heritage cannot be based on fixed criteria because the respect due to all cultures also requires that its physical heritage be considered within the cultural context to which it belongs” [25] (p. 1). This brings the “universality” of the notion of value into question, particularly in regard to its contextual dependency, as well as the perceptions of different groups (local communities and stakeholders) concerning cultural heritage and its values. Numerous documents verified and/or published by internationally recognised organisations aim to link cultural heritage and its values, both tangible and intangible, with the surrounding environment and the people with whom it is interrelated [26,27,28,29,30,31]. The term “heritage community” is defined as “people who value specific aspects of cultural heritage which they wish, within the framework of public action, to sustain and transmit to future generations” [27] (Article 2b, p. 2).

Moreover, cultural heritage has increasingly been viewed within the context of humanistic values, with its preservation aimed at protecting the spirit of place and the identity of people, as well as at improving quality of life [31]. There has been a growing emphasis on the need for more direct involvement of local communities and stakeholders in heritage preservation processes. This is particularly evident in the Recommendation on the Historic Urban Landscape, which highlights the importance of reaching the “consensus using participatory planning and stakeholder consultations on what values to protect for transmission to future generations, and to determine the attributes that bear these values” [30] (Article 3b, p. 1).

Furthermore, the Burra Charter [32] addresses the management of places with cultural heritage elements, calling for the direct involvement of local communities and stakeholders throughout the entire process. A model for managing heritage places is developed, comprising seven steps grouped into three main stages: (1) understand significance—(a) understand the place, and (b) assess cultural significance; (2) develop policy—(c) identify all factors and issues, (d) develop policy, and (e) prepare a management plan; and (3) manage in accordance with policy—(f) implement the management plan, and (g) monitor the results and review the plan [32] (p. 10). Recent research develops models for managing world cultural heritage that “involves the principles and practices of identifying, preserving, documenting, interpreting, and presenting objects, sites, and phenomena of historical, natural, scientific, or other value” [33] (p. 183), aligning with the principles of sustainable development, inclusiveness, and the participation of all relevant actors [34,35,36].

For this research problem and subject, the step “assess cultural significance” is of particular relevance, as it is defined in the Burra Charter to include the identification and approach to all values of a place with cultural heritage elements using relevant criteria, along with the formulation of a “statement of significance” [32] (p. 10). “Significance” is highlighted as the synthesis of cultural heritage values, while the “statement of significance” represents a formal document confirming the value of a specific monument, group of buildings, or site as a representative of cultural heritage and determines which protective measures, including legal frameworks, are appropriate [37] (p. 35). Given that the identification of values is a prerequisite for determining the significance of a particular monument, group of buildings, or site—based on which it is formally treated as cultural heritage—the importance of studying the notion of value is renewed. Additionally, the preceding overview of thoughts on the notion of value demonstrates that it was initially considered through the context of “outstanding universal value”, within which it held an instrumental role, serving as a normative framework for assessing significance and proclaiming cultural heritage. Subsequently, with the introduction of humanistic values and the growing need for the participation of various groups in processes of value identification and cultural heritage preservation, the notion of value became contextualised and locally dependent. This observed shift in understanding the notion of value underscores its mutable nature and the need for its continuous study and (re)examination in terms of its meaning, scope, and potential for manifestation in cultural heritage preservation.

1.2. Identifying the Main Approaches to Cultural Heritage Preservation

To analyse the notion of value within the framework of cultural heritage preservation, the authors of this paper recognised the need to identify and examine the main approaches to cultural heritage preservation. It is the authors’ statement that determining and analysing the main approaches enables insight into the ways of treating the notion of value in cultural heritage preservation.

In this regard, the analysis of relevant data sources, verified and/or published by renowned international organisations, included highlighting the meaning and scope of the notion of value and the core ideas of heritage preservation. The published results are part of wider research on the notion of value. Four main approaches to cultural heritage preservation were identified: (1) the material-based approach (MBA), (2) the value-based approach (VBA), (3) the living heritage approach, and (4) the historic urban landscape approach (HUL) [1]. Their identification as the main approaches is supported by the research of Ioannis Poulios, who recognises two dominant approaches, (1) material-based and (2) value-based, while promoting the application of the (3) living heritage approach [38]. The identification of the (4) historic urban landscape approach as the fourth dominant is based on the Recommendation on the Historic Urban Landscape [30].

1.2.1. MBA: Material-Based Approach to Cultural Heritage Preservation

The material-based approach developed from the idea of cultural heritage as the material remnants of the past, promoted by experts engaged in conservation to preserve them for future generations [34]. It has been supported by numerous internationally recognised documents in cultural heritage preservation [1], particularly the Venice Charter, which, through its explanation of conservation and restoration procedures [8] (Articles 4–13), contributed to the practical application of this approach. Within this conventional, object-based approach, cultural heritage is regarded as immutable. The focus is placed on the preservation of building materials as the direct representatives of cultural heritage and as the bearers of its values [33,39]. The widespread application of this approach has enabled the survival of a considerable cultural heritage affected by wartime destruction, especially during the 19th and 20th centuries [38]. On the other hand, viewing the building materials as the primary bearer of cultural heritage value has contributed to the perspective that heritage should be isolated from the present and protected from contemporary use that could potentially have a negative impact on its material [38].

1.2.2. VBA: Value-Based Approach to Cultural Heritage Preservation

The value-based approach emerged from the need to overcome the limitations of the material-based approach, particularly in understanding the notion of value. Unlike the material-based approach, which is oriented towards heritage conservation experts and their interpretation of value, the application of the value-based approach seeks to involve diverse groups—including local communities and stakeholders—in the processes of cultural heritage preservation. The expansion of the value-based approach into practical application can be attributed to documents such as the Burra Charter, which emphasises that the assessment of a place’s significance is based on values assigned to it by all stakeholder groups, not only by experts [32] (Article 6), [34]. Also, the Nara Document on Authenticity highlights the importance of ensuring “that attributed values are respected and that their determination includes efforts to build, as far as possible, a multidisciplinary and community consensus concerning these values” [18] (Appendix 1.3, p. 3). The value-based approach is grounded in understanding the cultural heritage and its values as a social construct [40] and in the statement that cultural heritage values result from the interaction between the heritage itself, its context, and people [33]. Owing to the ideas embedded in the value-based approach, the scope of the notion of value has expanded to include both tangible and intangible values, which are starting to be understood as changeable, justifying the importance of their (re)examination.

Although a significant step has been made toward including various relevant actors in the processes of cultural heritage preservation, researchers note the still-dominant role of experts in decision-making [33,38]. Consequently, the value-based approach remains closer to the material-based. Despite efforts to overcome the limitations identified in the material-based approach, the value-based approach has not yet succeeded in achieving a balance between the preservation of tangible and intangible values. Although the presence of intangible values has been acknowledged, they are still not treated equally within the processes of cultural heritage preservation. The limitations of the value-based approach have also been observed from the standpoint of the difficulty in forming a consensus about which cultural heritage values—identified by various groups such as local communities, stakeholders, and experts—should be preserved. Some authors explain this issue through the subjectivity in value assessment, as well as the existence of conflicting values and interests among local communities, stakeholders, and experts [40,41].

1.2.3. LHA: Living Heritage Approach to Cultural Heritage Preservation

The living heritage approach emerged from the need to identify and more directly involve relevant actors—primarily local community members—in the processes of cultural heritage preservation. Particular focus is placed on their equal participation and decision-making capacity. To understand its main ideas, it is necessary to comprehend the term “living heritage”, which is explained as “the ongoing use of heritage by its associated community for the purpose for which it was originally created” [42] (p. 4). This approach is based on the concept of continuity (1) of the original function of the cultural heritage, (2) of the relationship between the community and the cultural heritage, (3) of the community’s care for the cultural heritage, and (4) of the development of both tangible and intangible aspects of the cultural heritage in response to changing conditions [38,41,43]. The concept of continuity in the living heritage approach becomes dominant over the principle of authenticity, thus transforming the idea of preserving cultural heritage as a material remnant of the past into the need to preserve it as a process [33], thereby opening possibilities for its broader practical application, especially in the context of world heritage management [44].

On the other hand, the early development of the living heritage approach—also referred to as the people-centred, community-based approach—was the result of the activities of ICCROM and the Programme on Living Heritage Sites, launched in 2003 as part of the Integrated Territorial and Urban Conservation (ITUC) initiative [43]. The Programme’s main idea was to connect cultural heritage with the contemporary context, “including benefits and people’s interests and capacity to engage in continuous care as true and long-term custodians of these sites” [43] (p. 43). The Programme’s objectives included “the creation of tools necessary to develop a community-based approach to conservation and management; promotion of traditional knowledge systems in conservation practices and increased attention paid to living heritage issues in training programmes” [43] (p. 43).

The central role of the community in the development and implementation of the living heritage approach is evident. At the same time, the significant contribution lies in defining the “core community” as members of the local community who are directly connected to the cultural heritage, maintain its original function, and nurture a responsible relationship toward it—making it an integral part of contemporary life, or in other words, making it “living” [38] (p. 21). Due to their direct and intergenerational continuity with the cultural heritage, core community members are identified as relevant actors in decision-making processes concerning heritage preservation [38] (p. 24). Other stakeholder groups, including the broader local community and experts, have a consultative and educational role toward the core community, which acts as the decision-maker [45]. This represents one of the main differences between the living heritage approach and the previously analysed ones.

The particular significance of the living heritage approach lies in its applicability to various types of heritage [43]. However, it is essential to acknowledge the potential drawbacks of its practical application. This approach emphasises the continuity of cultural heritage use, in contrast to the material-based approach, which aims to separate it from contemporary life. Unlike the value-based approach, which attempts to include both tangible and intangible values (albeit with the continued dominance of tangible ones), the living heritage approach focuses on nurturing intangible values of cultural heritage, while the preservation of tangible values is deprioritised [38,46]. Nonetheless, through the living heritage approach, the idea of adapting cultural heritage to contemporary needs is developed, whereby cultural heritage begins to be preserved for the present, and the ways it is adapted to contemporary demands begin to be interpreted as its new values.

1.2.4. HUL: Historic Urban Landscape Approach to Cultural Heritage Preservation

To understand the historic urban landscape approach, it is necessary to explain the term “historic urban landscape”. It was defined in 2011 in the Recommendation on the Historic Urban Landscape [30]—a document responsible for the formal articulation of the historic urban landscape approach and promoting its broader application in cultural heritage preservation and management. According to the definition, “historic urban landscape” refers to “the urban area understood as the result of a historic layering of cultural and natural values and attributes, extending beyond the notion of ‘historic centre’ or ‘ensemble’ to include the broader urban context and its geographical setting” [30] (I. Definition, item 8, p. 3). Although its promotion was renewed in 2011 [30], its conceptual development dates back to 2005, in the UNESCO initiative and the Vienna Memorandum, which aimed to bridge the gap between cultural heritage preservation and development [44,47]. The Memorandum’s significance lies in the need to maintain cultural continuity through quality interventions and the imperative to identify different historical layers, as reflected in the statement that “urban planning, contemporary architecture and preservation of the historic urban landscape should avoid all forms of pseudo-historical design, as they constitute a denial of both the historical and the contemporary alike” [47] (D. Guidelines for conservation management, item 21, p. 4).

This approach is based on understanding cultural heritage as a process—an idea initiated by the living heritage approach. Focused on urban conservation and the preservation of historic urban landscapes, this approach reinterprets cultural heritage values that extend beyond the scope of individual monuments or ensembles, “shifting the discourse from ‘monuments’ to ‘people’, from ‘objects’ to ‘functions’, from ‘preservation’ to ‘sustainable use and development’ and from ‘material evidence to the intangible (and even unconservable) intellectual construct of ancestral communal memory” [48] (p. 2) [49]. Furthermore, it fosters an understanding of cultural heritage values as evidence of the urban environment’s evolution [37,50], thereby connecting with the concept of continuity. As in the value-based and living heritage approaches, it adopts the idea of cultural heritage as a social and ideological construct [48,51], positioning people at the centre of cultural heritage preservation and management [30] (Introduction, item 6, p. 2). The relevance of this approach is further demonstrated by research efforts aimed at identifying the relevant groups that should be included in cultural heritage preservation and management practices, as well as the tools for their participation and the methods for the practical implementation of the historic urban landscape approach [52,53,54,55,56,57,58,59]. The potential for broader practical application of this approach is outlined in the Recommendation on the Historic Urban Landscape [30] and further explained in the HUL Guidebook: Managing Heritage in Dynamic and Constantly Changing Urban Environments [60]. This includes a set of six steps [30] (item 3) and four groups of tools [30] (IV. Tools, item 24) for practically implementing the historic urban landscape approach in cultural heritage preservation and management practices, thereby marking a significant step toward a more direct link between heritage theory and practice.

Through an understanding of cultural heritage as a process and the recognition of the need to maintain continuity, the historic urban landscape approach is seen as a carrier of the advanced ideas on cultural heritage that were initiated in the Burra Charter [32,61]. These ideas expanded the scope of cultural heritage and its values, as well as the range of stakeholders involved in its preservation and management practices. However, despite the identification of significant potential, the historic urban landscape approach is still not globally applied in heritage preservation and management practice, which is explained by the lack of operational methods and tools [61]—particularly in identifying the cultural heritage values and associated attributes which form an essential starting point for any research considering cultural heritage and its preservation and management.

1.3. Research Challenge: Unestablished Consensus on Cultural Heritage and Its Values

Previous identification and analysis of the four main approaches to cultural heritage preservation have enabled tracing the ideas concerning cultural heritage over time. At their cores lie values; thus, cultural heritage preservation becomes a process of negotiating values [62] deemed significant by relevant experts and various stakeholder groups. However, the subjectivity inherent in different actors’ assessments of the values’ importance and in selecting the “most significant” ones complicates the process of responsible cultural heritage preservation. This complexity is further exacerbated by the increasing number of internationally recognised documents, which, despite striving to establish a global consensus on cultural heritage and its preservation [63], paradoxically fail to provide more precise and directly applicable guidance for the identification and safeguarding of cultural heritage values. This issue is particularly evident in the context of World Cultural Heritage. It entails the formal exclusion of local communities from preservation and management processes [64], thereby omitting a valuable source of local knowledge that could contribute to the recognition and appropriate treatment of cultural heritage values.

The gap between theory, which aspires to establish global coherence in the treatment of cultural heritage, and practice, which is contextually dependent, is also reflected in the categorisation of approaches to cultural heritage preservation. On the one hand, there is the application of expert-led approaches [16,24,48,65], predominant in the context of World Cultural Heritage and often based on the application of universally defined principles and the consideration of cultural heritage values within one or more related academic disciplines. On the other hand, approaches grounded in the central local community’s role are developing [16,24,48,65]. Although recognised as more interdisciplinary and inclusive compared to expert-led approaches, these approaches also possess potential drawbacks, including the risk that certain groups may abuse their positions as decision-makers [66,67,68].

The decision to apply one of the four main approaches depends on the context and condition of the cultural heritage, the needs of the stakeholders involved in its preservation, and the intentions of the decision-makers. However, there is an increasing call for the simultaneous application of knowledge from all four main approaches. Furthermore, to establish a basis for achieving consensus on the interpretation of cultural heritage, particular attention should be devoted to operationalising and combining the different tools for approaching its values, which constitute an integral component of each of the four identified main approaches to cultural heritage preservation.

1.4. Research Outline

Building on the identified lack of consensus and operational clarity in the treatment of cultural heritage values, this study moves beyond definitional discussions to examine how values are recognised, operationalised, and prioritised within contemporary academic practice. Rather than asking what cultural heritage values are in abstract terms, the research focuses on how value types are mobilised within the four dominant approaches to cultural heritage preservation—material-based (MBA), value-based (VBA), living heritage (LHA), and historic urban landscape (HUL) —as reflected in the global academic literature. Although the four-approach framework is well established, the literature still lacks a systematic, evidence-based account of how these approaches are operationalised through value types in contemporary scholarship and how their practical implications are implicitly shaped by what is actually measured and prioritised. Building on calls to combine knowledge across approaches and to better operationalise tools for approaching values, this study advances the field by moving from a descriptive classification of types to a data-driven synthesis that maps (1) value type recognition versus (2) direct inclusion in research processes across the four approaches, and identifies patterns of dominance and under-representation.

Accordingly, the study addresses the following research questions:

• RQ1. Which value types are recognised within academic research applying the four main approaches to cultural heritage preservation, and how does their representation vary across approaches?
• RQ2. To what extent are recognised value types directly operationalised within research processes (e.g., through criteria, indicators, or evaluative frameworks), and where do discrepancies emerge between recognition and application?
• RQ3. What patterns of dominance, under-representation, or selectivity in value operationalisation can be identified across the four approaches, and what do these patterns imply for current heritage preservation practices?

These questions are directly aligned with the bibliometric and content-analysis design of the study and structure the presentation and discussion of results.

2. Materials and Methods

This research encompassed four main phases: (1) the identification of the data source, data search and data selection, (2) sample overlapping–final data set creation, (3) bibliometric analysis, and (4) content analysis (Figure 1). The first two phases focused on defining, collecting, and selecting relevant data sources, and establishing the final data sample. The third phase focused on analysing the research topic’s currency, and its potential for interdisciplinarity and transdisciplinarity. The fourth phase is directly linked to the research objectives.

By combining bibliometric mapping with structured content analysis, the study enables a replicable synthesis of how the four approaches are enacted in contemporary academic practice, particularly through the value types that are explicitly identified and directly included into research processes.

2.1. Phase 1: Identification of Data Source, Data Search, and Data Selection

The first research phase comprised the following: (1) profiling data sources and selecting an appropriate database for collecting scholarly works, (2) creating the initial search string to determine the scope of data sources, and (3) creating the control search string to more directly link data sources with the research problem and subject.

2.1.1. Profiling Data Sources

Scopus was identified as the relevant database for collecting scholarly works in architecture, aligning with the authors’ research standpoint. This choice is well-justified through the existing academic literature, which highlights Scopus’s comprehensive scope, interdisciplinary coverage, and metadata accuracy [69,70].

2.1.2. Initial Search String

The initial search of the Scopus database encompassed the following: (1) data searching based on the input of primary and secondary keywords defined concerning the research problem and subject; and (2) data narrowing of scholarly works based on a defined set of criteria. Data sources indexed in the Scopus database up to 1 December 2024 were included.

• Data Searching

The primary and secondary keywords were searched within the title, abstract, and keywords of the scholarly works. The primary keywords related to the research field included the following: (1) architecture; (2) cultural heritage; and (3) values. The secondary keywords related to the research subject encompassed the names of the four main approaches to cultural heritage preservation: (1) material-based approach; (2) value-based approach; (3) living heritage approach; and (4) historic urban landscape approach. Based on the defined keywords, a total of 293 scholarly works were found: 40 related to the material-based approach, 192 related to the value-based approach, 39 related to the living heritage approach, and 22 related to the historic urban landscape approach.

• Data Narrowing

The sample of scholarly works (a total of 293) was narrowed down by introducing additional criteria to obtain a final relevant data sample for further analysis. The criteria for narrowing the data sample and the rationale for their definition are detailed in

Table 1. Set of criteria for data narrowing (provided by authors, 2025).

Criterion	Explanation	Argumentation
C1	Language English	The scientific data sources considered in this study are those written exclusively in English, as it is the most widely used language in the global academic community.
C2	Type of data Article	Within the SCOPUS database, the following types of data were identified: abstract report, article, book, book chapter, conference paper, conference review, review, data paper, editorial, erratum, letter, note, report, retracted, short survey, and undefined. For the purpose of forming a relevant sample of data sources to be further analysed, the “article” type of data was selected as the most pertinent. The primary rationale for exclusively selecting “article” as the data source type lies in the specific process of publication in scientific journals, which involves multiple peer reviews and editing, as well as the necessity for a clearly defined structure and research methodology.
C3	Data availability Open access	Only those academic articles for which a publicly accessible version of the full text was available were considered, in order to ensure transparency in the review of the research results and the methodology applied in the analysis of the specific problem and research subject.
C4	Article title Screening analysis	A preliminary review of the title, keywords, and abstract of the academic articles allowed for further narrowing of the sample, enabling the identification of those that explore cultural heritage and those that apply one of the four main approaches to cultural heritage preservation.
C5	Article key words Screening analysis
C6	Article abstract Screening analysis
C7	Duplicates’ elimination Academic articles’ regrouping	Based on a preliminary review of the titles, keywords, and abstracts of the academic articles, it was possible to identify duplicates and better regroup the academic articles according to the four main approaches to cultural heritage preservation.

. The temporal framework of the published works was not considered, as it would have potentially excluded scholarly works studying one of the four main approaches to cultural heritage preservation, which would have affected the scope and relevance of the conducted research. Based on the applied criteria, a total of 97 academic articles were identified, of which 14 focused on the material-based approach, 65 on the value-based approach, 11 on the living heritage approach, and 7 on the historic urban landscape approach. By introducing the narrowing criteria, especially criteria C4, C5, and C6, it was possible to identify how well the academic articles, based on the defined primary and secondary keywords, align with this research problem and subject. The introduction of the additional criterion C7—which concerns the duplicate elimination and the grouping of academic articles according to the applied approach to cultural heritage preservation—resulted in the final relevant sample of 77 academic articles, of which 27 focused on the material-based approach, 30 on the value-based approach, 13 on the living heritage approach, and 7 on the historic urban landscape approach.

2.1.3. Control Search String

The control search of the Scopus database was conducted with the aim of establishing a more direct connection between the relevant sample of data sources and the problem and subject of this research study. As with the initial search, it included the following: (1) data searching based on the input of primary and secondary keywords redefined in relation to the initial search; and (2) data narrowing of scholarly works based on a previously defined set of criteria (Table 1).

• Data Searching

Primary and secondary keywords were once again searched within the title, abstract, and keywords of the scholarly works. In order to identify those that more directly address one of the four recognised main approaches to cultural heritage preservation, the search keywords within the Scopus database were redefined. The primary keyword, related to the research field, was (1) heritage, while the secondary keywords, related to the subject of the research, represented the names of the four recognised main approaches to cultural heritage preservation. They were specified using quotation marks as follows: (1) “material-based approach”; (2) “value-based approach”; (3) “living heritage approach”; and (4) “historic urban landscape approach”. Based on the defined keywords and their search within the title, abstract, and keywords of scholarly works, a total of 123 works were identified: 5 related to the material-based approach, 44 related to the value-based approach, 12 related to the living heritage approach, and 62 related to the historic urban landscape approach.

• Data Narrowing

The sample of scholarly works (a total of 123) was narrowed by introducing additional criteria, with the aim of obtaining a final relevant data sample for further analysis. Based on the applied set of criteria for data narrowing (Table 1), a total of 62 academic articles were identified: 4 focused on the material-based approach, 21 focused on the value-based approach, 7 focused on the living heritage approach, and 30 focused on the historic urban landscape approach. By introducing the additional criterion C7, the final relevant sample of 53 academic articles was obtained, of which 1 focused on the material-based approach, 15 focused on the value-based approach, 7 focused on the living heritage approach, and 30 focused on the historic urban landscape approach.

2.2. Phase 2: Sample Overlapping–Final Dataset Creation

Based on the results obtained from the initial and control search strings of the Scopus database, two samples of relevant data sources were formed. Phase 2 of the research focused on systematically merging these two samples in order to construct a single, coherent final dataset. As illustrated in Figure 2, this phase involved a parallel and transparent comparison of the two samples, enabling the identification of their overlap and convergence. The process comprised the following: (1) the systematisation of academic articles according to the applied approach to cultural heritage preservation, (2) the identification and elimination of duplicate records, and (3) the regrouping of articles to ensure consistency across the four analytical categories. The PRISMA-style diagram presented in Figure 2 provides a detailed visual account of the sample overlapping process, clearly tracing how the initial and control search strings progressively converged toward the final dataset. On the other hand,

Table 2. Two samples of relevant data sources (provided by authors, 2025).

Scopus Database	Data Organising	Start	Set of Criteria for Data Narrowing *					Final
Search string	Approaches	Σ data	C1	C2	C3	C4 + C5 + C6	C7	Σ data
Initial	MBA	40	37	24	22	14	27	27
	VBA	192	184	117	97	65	30	30
	LHA	39	34	18	15	11	13	13
	HUL	22	22	11	9	7	7	7
Control	MBA	5	4	4	4	4	1	1
	VBA	44	44	34	21	21	15	15
	LHA	12	11	8	7	7	7	7
	HUL	62	62	39	35	30	30	30
* C1, C2, C3, C4, C5, C6, C7—set of criteria defined in Table 1								Σ130

shows the number of data sources from the initial and control search strings based on the criteria used to narrow and define academic articles for further bibliometric and content analysis.

In the subsequent steps, the refined sample is further structured according to the predefined criteria, resulting in a final dataset that is methodologically transparent, reproducible, and fully aligned with the research design.

• Data Systematisation

The data systematisation and their grouping according to the applied approach to cultural heritage preservation was possible through an analysis of the title, abstract, and keywords of the articles (application of the criteria C4, C5, and C6). Additionally, they were systematised into four groups: (1) MBA, (2) VBA, (3) LHA, and (4) HUL.

• Duplicate Elimination

The two data samples constitute the primary source of information relevant to this research problem and subject. The systematisation of academic articles also allowed the identification of potential duplicates. By applying the additional criterion C7—which pertains to the elimination of duplicates and the grouping of academic articles according to the applied approach to cultural heritage preservation—the final relevant data sample for further content analysis was defined: 128 academic articles (Supplementary Material S1). Of these, 28 focus on the material-based approach, 44 examine the value-based approach, 20 address the living heritage approach, and 36 academic articles analyse the historic urban landscape approach (

Table 3. Final sample of relevant data sources (provided by authors, 2025).

Sample over-lapping	Data Organising	Start			Criterion	Final
	Approaches	Σ data initial	Σ data control	Σ data	C7	Σ data
	MBA	27	1	28	Elimination of duplicates and data organising in relation to the applied approach	28
	VBA	30	15	45		44
	LHA	13	7	20		20
	HUL	7	30	37		36
				Σ130		Σ128

).

2.3. Phase 3: Bibliometric Analysis

Following the definition of the final relevant data sample (128 academic articles), a bibliometric analysis was carried out involving the following: (1) article publishing trends and (2) source journals.

• Article Publishing Trends

The trend in the publication of academic articles indicates the relevance of the research topic. The bibliometric analysis enabled the highlighting of the currency and potential dominance of one of the four main approaches over time, as well as the simultaneous representation of research addressing various approaches.

• Source Journals

The analysis of the academic journals where the articles were published enabled the identification of the research arenas to which they belong, the potential predominance of any specific research arena, and the journal’s impact. Furthermore, the obtained data indicate the degree of interdisciplinarity and transdisciplinarity of the research problem—the question of cultural heritage values and their manifestation through the application of one of the four main approaches to cultural heritage preservation. The relationship between the identified academic journals and the published articles is presented in Supplementary Material S1.

2.4. Phase 4: Content Analysis

The content analysis was conducted concerning the academic articles’ grouping according to the four main approaches to cultural heritage preservation: (1) MBA, (2) VBA, (3) LHA, and (4) HUL. It encompassed the following: (1) the article type, research arena, and value existence analysis, (2) representation of the value types recognised within the analysed articles, (3) identification of the value types directly included in the research process, and (4) representation of the value types directly included in the research process. Based on the content analysis conducted, the research objectives of this paper were achieved: (1) a systematic overview of the relationship between recognised value types and those directly involved in cultural heritage preservation on the one hand, and the applied approaches to cultural heritage preservation on the other, and (2) the identification of the dominance of specific value types/certain approaches within the process of cultural heritage preservation.

• Article Type, Research Arena, and Value Existence Analysis

The identification of the article type provided insight into how a particular research problem is viewed: (1) through a literature review, (2) by developing and applying specific methods, or (3) through the case study analysis (or their combination). Additionally, classifying the academic articles according to the research arenas allowed for an understanding of the interdisciplinarity and transdisciplinarity of the topic. On the other hand, based on the identification of the notion of value and its treatment in academic articles, a set of articles was identified in which specific value types were directly included in the research process. The value existence analysis distinguishes between several analytically relevant conditions:

• Articles in which cultural heritage values are not identified;
• Articles in which the term “value” is used descriptively or metaphorically but remains analytically irrelevant to the research objectives;
• Articles in which value types are recognised or mentioned but not operationalised;
• Articles in which specific value types are explicitly and directly integrated into the research methodology through criteria, indicators, evaluative frameworks, or scoring systems.

This distinction allows for a reading of how the notion of value is treated within contemporary academic practice, moving beyond mere terminological presence toward assessing the degree of methodological engagement with values. The same analytical logic was consistently applied across all four approaches, enabling a comparative examination of differences in how cultural heritage values are recognised, conceptualised, and operationalised within each approach. The results of this classification are presented in Appendix A (

Table A1. MBA—article type, research arena, and value existence analysis.

Authors	Year	Title	Article Type	Research Arena	Value Existence
Guarnieri et al. [83]	2010	Cultural heritage interactive 3D models on the web: An approach using open source and free software	case study	Heritage digitization	noticed
Styliadis et al. [76]	2011	Photography-based façade recovery & 3-d modeling: A CAD application in Cultural Heritage	methodological case study	Heritage digitization	not relevant
Urosevic et al. [77]	2012	Black soiling of an architectural limestone during two-year term exposure to urban air in the city of Granada (S Spain)	methodological case study	Heritage conservation	not relevant
Daly [84]	2014	A Framework for Assessing the Vulnerability of Archaeological Sites to Climate Change: Theory, Development, and Application	theoretical methodological case study	Heritage management	noticed
Nanavati [73]	2018	Developing Tradition: A Case of Heritage Foundation of Pakistan	methodological case study	Heritage regeneration	/
Tissier et al. [78]	2019	Electrochemical chloride extraction to repair combined carbonated and chloride contaminated reinforced concrete	methodological case study	Heritage conservation	not relevant
Balaguer et al. [74]	2019	Bioclimatic strategies of traditional earthen architecture	case study	Energy efficiency	/
Karoglou et al. [85]	2019	Towards a Preservation-Sustainability Nexus: Applying LCA to Reduce the Environmental Footprint of Modern Built Heritage	case study	Heritage regeneration	noticed
Adamopoulos et al. [75]	2020	Multispectral Sensing and Data Integration for the Study of Heritage Architecture	methodological case study	Heritage conservation	/
Sevieri et al. [97]	2020	A multi-hazard risk prioritisation framework for cultural heritage assets	theoretical methodological case study	Heritage disaster risk management	included
Du et al. [98]	2021	Study on the linear absent section ratio (L-ASR) of earthen sites and anthropogenic influence from the perspective of population density	case study	Heritage conservation	included
Galbiati et al. [86]	2021	Methodology for energy retrofitting of Modern Architecture. The case study of the Olivetti office buildingin the UNESCO site of Ivrea	methodological case study	Energy efficiency	noticed
Koutsoudis et al. [79]	2021	Multispectral aerial imagery-based 3D digitisation, segmentation and annotation of large scale urban areas of significant cultural value	methodological case study	Heritage disaster risk management	not relevant
Pepe et al. [87]	2021	UAV Photogrammetry and 3D Modelling of Complex Architecture for Maintenance Purposes:	methodological case study	Heritage digitization	noticed
Moreno et al. [80]	2022	Remote sensing to assess the risk for cultural heritage: forecasting potential collapses due to rainfall in historic fortifications	case study	Heritage disaster risk management	not relevant
Akil et al. [99]	2022	Spatial Historical Evolution of Urban Tosora Cultural Heritage	theoretical methodological case study	Heritage management	included
Kamelnia et al. [81]	2022	Exploring the spatial structure of Toon historical town courtyard houses: topological characteristics of the courtyard based on a configuration approach	methodological case study	Heritage conservation	not relevant
Pedišić et al. [88]	2023	Chapel of Sts Fabian and Sebastian in Letovanić: Historical and Design Features, and Approach to Renovation	case study	Heritage restoration	noticed
Jia et al. [89]	2023	Image Inpainting of Thangka Murals Using Edge-Assisted Feature Fusion and Self Attention Based Local Refine Network	methodological case study	Heritage restoration	noticed
Jiménez Rios [90]	2023	Learning from the Past: Parametric Analysis of Cob Walls	methodological case study	Heritage conservation	noticed
Guardiola-Víllora et al. [91]	2023	Performance based probabilistic seismic risk assessment for urban heritage. An example in Pla del Remei Area (Valencia)	methodological case study	Heritage disaster risk management	noticed
Yusuf D.A et al. [82]	2023	Quest for an Innovative Methodology for Retrofitting Urban Built Heritage: An Assessment of Some Historic Buildings in Kano Metropolis, Nigeria	theoretical methodological case study	Heritage conservation	not relevant
Moscatelli [100]	2023	Rethinking the Heritage through a Modern and Contemporary Reinterpretation of Traditional Najd Architecture, Cultural Continuity in Riyadh	methodological case study	Heritage reinterpretation	included
Sallam et al. [92]	2023	Seismic vulnerability assessment of historical minarets in Cairo	methodological case study	Heritage disaster risk management	noticed
Ahmadi et al. [93]	2024	Analysis of Rural Heritage House Facades as the Initial Step Towards Their Adaptive Reuse and Renovation: A Case Study of Sixteen Houses in Mazandaran Province, Iran	methodological case study	Heritage adaptive reuse	noticed
Altan et al. [94]	2024	Conceptual Approaches in Contemporary Hotel Interiors in Northern Cyprus: Ornamentation and Representation	theoretical methodological case study	Heritage reinterpretation	noticed
Ruberti et al. [95]	2024	Geoheritage and Cultural Heritage Interface in a Place of Worship: The Historical Development of the Monumental Complex of San Francesco le Moniche in Aversa (Italy) and Its Underground Artificial Cavities	methodological case study	Heritage digitization	noticed
Ben Charif et al. [96]	2024	Low-Cost Photogrammetry for Detailed Documentation and Condition Assessment of Earthen Architectural Heritage: The Ex-Hotel Oasis Rouge in Timimoun as a Case Study	methodological case study	Heritage digitization	noticed

,

Table A2. VBA—article type, research arena, and value existence analysis.

Authors	Year	Title	Article Type	Research Arena	Value Existence
Plevoets et al. [101]	2011	Assessing authenticity of nineteenth-century shopping passages	case study	Heritage management	noticed
Araoz et al. [39]	2011	Preserving heritage places under a new paradigm	theoretical	Heritage preservation	noticed
Orbaşlı [66]	2015	Nara+20: A theory and practice perspective	theoretical	Heritage preservation	noticed
R. Blagojević et al. [102]	2016	The new technology era requirements and sustainable approach to industrial heritage renewal	case study	Heritage adaptive reuse	noticed
Cutajar et al. [126]	2016	A significant statement: new outlooks on treatment documentation	theoretical methodological case study	Heritage conservation	included
González Martínez [127]	2017	Urban authenticity at stake: A new framework for its definition from the perspective of heritage at the Shanghai Music Valley	methodological case study	Heritage management	included
Tomić Reljić et al. [128]	2017	An overview of GIS applications in landscape planning	theoretical methodological case study	Landscape studies	included
Montalbán Pozas et al. [103]	2018	Housing building typology definition in a historical area based on a case study: The Valley, Spain	methodological case study	Heritage preservation	noticed
Duval et al. [129]	2018	Contributions of a Heritage Values-based Approach to Rock Art Management. Lessons from the Maloti-Drakensberg World Heritage Site, South Africa	methodological case study	Heritage preservation	included
Konsa [33]	2019	Developments in approaches to heritage in Estonia: Monuments, values, and people	theoretical	Heritage management	noticed
Fatorić et al. [104]	2019	Knowledge co-production in climate adaptation planning of archaeological sites	methodological	Heritage preservation	noticed
O’Toole et al. [105]	2019	Choice, Values and Building Capability: A Case Study from Vietnam	theoretical methodological	Maritime archaeology	noticed
Kubalíková [130]	2019	Assessing geotourism resources on a local level: A case study from Southern Moravia (Czech Republic)	methodological case study	Geotourism	included
Nomeikaite [106]	2019	Street art and heritage conservation: From values to performativity	theoretical	Street art conservation	noticed
Sokołowicz et al. [107]	2020	The value of ambiguous architecture in cities. The concept of a valuation method of 20th century post-socialist train stations	theoretical methodological case study	Heritage management	noticed
Acharjya et al. [131]	2020	An integrated partial least square and rough set approach for studying pilgrimage attitude towards cultural heritage of Odisha	methodological case study	Behavioural studies	included
Ribera et al. [108]	2020	A multicriteria approach to identify the Highest and Best Use for historical buildings	methodological case study	Heritage management	noticed
Nikolić et al. [132]	2020	The possibilities of preservation, regeneration and presentation of industrial heritage: The case of Old Mint “A.D.” on Belgrade Riverfront	theoretical methodological case study	Heritage preservation	included
Durusoy Özmen et al. [109]	2021	Assessing the values-based context of conservation for modern architectural heritage: a study on the Headquarters Building of the T.R. 17th Regional Directorate of Highways Complex	theoretical case study	Heritage preservation	noticed
Saha et al. [133]	2021	Vernacular architecture as cultural heritage: An interpretation of urban vernacular ‘bangla baton’ houses of sylhet city, bangladesh	case study	Heritage management	included
Trajković et al. [134]	2021	Reprogramming modernist heritage: Enhancing social wellbeing by value-based programming approach in architectural design	theoretical methodological case study	Heritage reuse	included
Dubrovina et al. [110]	2022	Identifying Valuees of Constructivist Houses and Palaces of Culture in Leningrad	methodological case study	Heritage preservation	noticed
Martínez et al. [111]	2022	Vernacular Architecture and Cultural Identity in Shrinking Rural Settlements	case study	Heritage preservation	noticed
Al-Assadi et al. [112]	2022	Alienation in Contemporary Iraqi Architecture: The Questions of Space-Time Communication and Style	theoretical methodological case study	Heritage preservation	noticed
Liang et al. [135]	2022	Complex Social Value-Based Approach for Decision-Making and Valorization Process in Chinese World Cultural Heritage Site: The Case of Kulangsu (China)	theoretical methodological case study	Heritage management	included
Dabbene et al. [113]	2022	How to Monitor and Evaluate Quality in Adaptive Heritage Reuse Projects from a Well-Being Perspective: A Proposal for a Dashboard Model of Indicators to Support Promoters	theoretical methodological case study	Heritage reuse	noticed
Greco et al. [114]	2022	The Transformation of Healthcare Buildings: The Challenges of the University of Pavia for Urban Regeneration	case study	Heritage reuse	noticed
Petrulis et al. [115]	2023	Disturbing Values: Historic Thematic Framework as a Tool to Deal with the Soviet Architectural Legacy	theoretical case study	Heritage preservation	noticed
Spennemann [116]	2023	Conceptualizing a Methodology for Cultural Heritage Futures: Using Futurist Hindsight to Make ‘Known Unknowns’ Knowable	theoretical	Future studies	noticed
Zhang et al. [136]	2023	A model approach for post evaluation of adaptive reuse of architectural heritage: a case study of Beijing central axis historical buildings	theoretical methodological case study	Heritage reuse	included
Azzopardi et al. [137]	2023	What are heritage values? Integrating natural and cultural heritage into environmental valuation	theoretical methodological case study	Environmental studies	included
Ebejer et al. [138]	2023	Values as a base for the viable adaptive reuse of fortified heritage in urban contexts	theoretical case study	Heritage adaptive reuse	included
Ukabi et al. [117]	2023	Conserving the Historical Identity of North Nicosia Walled City: Exploring Design Approaches and Implications from 1983 to 2003	theoretical methodological case study	Heritage regeneration	noticed
Vidyullatha et al. [139]	2023	Adaptive Reuse of Heritage Buildings for Sustainable Urban Regeneration: Two Case Studies from India.	methodological case study	Heritage adaptive reuse	included
Abdurahiman et al. [118]	2024	Built Heritage Aspect and Its Implications for Value-Based Urban Conservation in Historic Urban Precincts	theoretical methodological	Urban conservation	noticed
Cunha Ferreira et al. [140]	2024	The contribution of stakeholder engagement to cultural significance assessment: the case of values-based conservation management planning for the Ocean Swimming Pool, Portugal	theoretical methodological case study	Heritage management	included
Galani et al. [119]	2024	An augmented reality approach for communicating intangible and architectural heritage through digital characters and scale models	theoretical methodological case study	Heritage digitization	noticed
Le et al. [120]	2024	Discussion of So-Called “Architectural Heritage DNA” via a Case Study of the Conservation of the Nara Palace Site, Japan	theoretical methodological case study	Heritage conservation	noticed
Loakaewnoo [141]	2024	The Composition and Value of Architectural Heritages in Pattani Old Town	methodological case study	Heritage preservation	included
Putra et al. [121]	2024	Architectural Heritage Buildings and Tourism Sustainability in Karangasem Bali	case study	Cultural tourism	noticed
Shbaita et al. [122]	2024	An Evidence-Based Assessment of Biophilic Interior Design in a Traditional Context: The Case of the Kingdom of Saudi Arabia	theoretical methodological case study	Biophilic design	noticed
Tanner-Mcallister et al. [123]	2024	The Benefits of the IUCN Green List for Implementing Effective Park Management in Queensland, Australia	case study	Park management	noticed
Tavakoli et al. [124]	2024	Authenticity- and Sustainability-Based Failure Prevention in the Post-Conservation Life of Reused Historic Houses as Tourist Accommodations: Award-Winning Projects from Isfahan City	methodological case study	Heritage reuse	noticed
Tayhuadong et al. [125]	2024	Lighting Design for Lanna Buddhist Architecture: A Case Study of Suan Dok Temple, Chiang Mai, Thailand	theoretical methodological case study	Cultural tourism	noticed

,

Table A3. LHA—article type, research arena, and value existence analysis.

Authors	Year	Title	Article type	Research Arena	Value Existence
Rabady [142]	2010	Place-based heritage regeneration in Madaba, Jordan	theoretical case study	Heritage regeneration	noticed
Poulios [38]	2014	Discussing strategy in heritage conservation: Living heritage approach as an example of strategic innovation	theoretical	Heritage management	noticed
Gao et al. [153]	2018	Garden culture as heritage: A pilot study of garden culture conservation based on Norwegian examples	theoretical methodological case study	Garden conservation	included
Chandani et al. [45]	2019	Assessing the values of living heritage sites in Kathmandu Valley: a community perspective	theoretical methodological case study	Heritage management	included
Heras et al. [154]	2019	Heritage values: towards a holistic and participatory management approach	methodological case study	Heritage management	included
Fetais et al. [143]	2020	Toward a diversified economy in post-pandemic environment: regeneration of Qatari villages	case study	Heritage regeneration	noticed
Chalabi et al. [155]	2021	Image and signification of the neo-moorish architecture in algeria case study: The big post office in Algiers	methodological case study	Heritage management	included
Osman et al. [156]	2021	The impact of living heritage approach for sustainable tourism & economics in mount lebanon	theoretical methodological case study	Heritage management	included
Khalaf [44]	2021	Continuity: a fundamental yet overlooked concept in World Heritage policy and practice	theoretical	Heritage management	noticed
Kevseroğlu et al. [144]	2021	Understanding intangible aspects of cultural landscape; living cultures of northeast kayseri valleys	theoretical case study	Heritage management	noticed
Shrestha [145]	2021	Community led post-earthquake heritage reconstruction in Patan–issues and lessons learned	case study	Heritage regeneration	noticed
Feng et al. [157]	2021	Dynamic authenticity: Understanding and conserving mosuo dwellings in china in transitions	methodological case study	Heritage conservation	included
Sudarwani et al. [146]	2022	The Survival of Chinatown Architecture: Lasem Chinatown, Indonesia	case study	Heritage resilience	noticed
O.Šćitaroci et al. [147]	2022	Cultural Heritage-testimony of the Man and Nature Co-existence	theoretical case study	Heritage regeneration	noticed
Sirisoda et al. [148]	2023	Reflecting Spatial Identity and Values through Local Architecture: The Thai-Yuan House in the Saraburi Province, Thailand	case study	Heritage regeneration	noticed
Nursanty et al. [158]	2023	Unveiling the Authenticity of Islamic Values: The Evolution and Transformation of Traditional Villages	case study	Heritage preservation	included
Mazzetto et al. [149]	2023	Urban Heritage in Saudi Arabia: Comparison and Assessment of Sustainable Reuses	methodological case study	Heritage reuse	noticed
Andari et al. [150]	2023	Local Wisdom in the Land System of Manggarai’s Indigenous People, Indonesia	case study	Heritage management	noticed
Piotrowski et al. [151]	2024	The life and death of windmills in central Poland: Between lost heritage and the heritage of memory	case study	Heritage preservation	noticed
Evans et al. [152]	2024	Aa Norf’k Wieh: a pacific epistemology for reconceptualising heritage management in Kingston and Arthur’s Vale Historic Area, Norfolk Island	case study	Heritage management	noticed

and

Table A4. HUL—article type, research arena, and value existence analysis.

Authors	Year	Title	Article Type	Research Arena	Value Existence
Van Oers et al. [159]	2012	Historic cities as model of sustainability	theoretical	Heritage management	noticed
Van Oers et al. [54]	2013	Road map for application of the HUL approach in China	theoretical	Heritage management	noticed
De Rosa et al. [55]	2013	Historic urban landscape approach and port cities regeneration: Naples between identity and outlook	case study	Urban regeneration	noticed
Nikezić et al. [160]	2014	Seeking a new architectural paradigm	case study	Landscape revitalisation	noticed
Kudumović [161]	2015	Toward historic urban landscape approach: Serial properties along the Bosna river	case study	Heritage management	noticed
Dormaels [162]	2016	Participatory management of an urban world heritage site: The Table de Concertation du Vieux-Québec	theoretical case study	Heritage management	noticed
Caballero [163]	2016	The role of natural resources in the historic urban landscape approach	theoretical	Heritage management	noticed
G. Martínez [63]	2017	Built Heritage Conservation and Contemporary Urban Development: The Contribution of Architectural Practice to the Challenges of Modernisation	theoretical case study	Heritage management	noticed
Rey-Perez et al. [177]	2017	Historic urban landscape: an approach for sustainable management in Cuenca (Ecuador)	theoretical methodological case study	Heritage management	included
Zeayter et al. [56]	2018	Heritage conservation ideologies analysis–Historic urban landscape approach for a Mediterranean historic city case study	theoretical case study	Heritage conservation	noticed
Erkan [164]	2018	The Way Forward with Historic Urban Landscape Approach Towards Sustainable Urban Development	theoretical	Heritage management	noticed
Dastgerdi et al. [37]	2018	Specifying the significance of historic sites in heritage planning	theoretical	Heritage management	noticed
Rey-Pérez et al. [178]	2018	Towards the Implementation of the Historic Urban LandscapeApproach in the Guayaquil Waterfront (Ecuador): A Scoping Case Study	case study	Heritage management	included
Erkan [165]	2018	Viewpoint: Historic Urban Landscape Approach for Sustainable Urban Development	theoretical	Heritage management	noticed
Khalaf [64]	2018	A Proposal to Apply the Historic Urban Landscape Approach to Reconstruction in the World Heritage Context	theoretical	Heritage re- construction	noticed
Psarra [48]	2018	The Role of Spatial Networks in the Historic Urban Landscape: Learning from Venice in the Fifteenth and Sixteenth Centuries	theoretical case study	Urban conservation	noticed
Ginzarly et al. [166]	2019	The Historic Urban Landscape approach to urban management: a systematic review	theoretical	Heritage management	noticed
Colavitti et al. [179]	2019	Applying the HUL approach to walled towns of Mediterranean seaport cities: Lessons and guidelines through the experience of four UNESCO walled towns	theoretical case study	Heritage management	included
Wang et al. [183]	2019	The locality of Beijing historic areas from a dynamic perspective based on geo-tagged photos	case study	Urban regeneration	/
Issarathumnoon [167]	2020	Applying the historic urban landscape approach to the identification of urban heritage attributes of Bangkok’s old town	case study	Heritage conservation	noticed
Zhao et al. [61]	2021	The role of digital technologies in recording values of human settlements: testing a practical Historic Urban Landscape approach in China and India	theoretical case study	Digital technologies	noticed
Nouch [180]	2021	Planning the sustainable development of historic neighbourhoods through the management of significance: A proposal for a values-based approach in Santarém’s Mouraria	theoretical methodological case study	Heritage management	included
Kırmızı et al. [59]	2021	A participatory planning model in the context of Historic Urban Landscape: The case of Kyrenia’s Historic Port Area	theoretical case study	Heritage management	noticed
Wang et al. [181]	2021	Contextualising a heritage assessment toolkit at the pre-planning stage of the historic urban landscape approach	methodological case study	Heritage management	included
Pintossi et al. [57]	2021	Assessing Cultural Heritage Adaptive Reuse Practices: Multi-Scale Challenges and Solutions in Rijeka	theoretical methodological case study	Heritage reuse	noticed
Pintossi et al. [58]	2021	Identifying challenges and solutions in cultural heritage adaptive reuse through the historic urban landscape approach in Amsterdam	theoretical methodological case study	Heritage reuse	noticed
Klingmann [168]	2022	Re-scripting Riyadh’s historical downtown as a global destination: a sustainable model?	theoretical case study	Heritage reuse	noticed
Jiang et al. [169]	2022	Urban Heritage Conservation and Modern Urban Development from the Perspective of the Historic Urban Landscape Approach: A Case Study of Suzhou	case study	Urban conservation	noticed
El-bastawissi et al. [170]	2022	Conservation of Beirut’s Urban Heritage Values Through the Historic Urban Landscape Approach	case study	Urban conservation	noticed
García-Esparza [182]	2022	Urban Scene Protection and Unconventional Practices—Contemporary Landscapes in World Heritage Cities of Spain	theoretical methodological case study	Urban conservation	included
Cunha Ferreira et al. [171]	2023	The Historic Urban Landscape Approach and the Governance of World Heritage in Urban Contexts: Reflections from Three European Cities	methodological case study	Heritage management	noticed
Pintossi et al. [172]	2023	Cultural heritage adaptive reuse in Salerno: Challenges and solutions	theoretical methodological case study	Heritage reuse	noticed
Jiang et al. [173]	2023	Spatial Distribution of Urban Heritage and Landscape Approach to Urban Contextual Continuity: The Case of Suzhou	case study	Urban conservation	noticed
Macamo et al. [174]	2024	Developing Heritage Preservation on Ilha de Moçambique Using a Historic Urban Landscape Approach	theoretical case study	Heritage management	noticed
Prabowo et al. [175]	2024	Urban Heritage Facility Management: A Conceptual Framework for the Provision of Urban-Scale Support Services in Norwegian World Heritage Sites	methodological case study	Heritage management	noticed
Duangputtan et al. [176]	2024	Adapting the Historic Urban Landscape Approach to Study Slums in a Historical City: The Mae Kha Canal Informal Settlements, Chiang Mai	methodological case study	Heritage management	noticed

), which collectively supports the comparative analysis discussed in Section 3.2.

• Representation of the Value Types Recognised Within the Analysed Articles

The content analysis of academic articles, in which a specific value type was identified, enabled the listing of all recognised value types, with a particular focus on their representation. In this way, the most frequently represented value types were highlighted. The results of this research step are organised according to the four main approaches to cultural heritage preservation and presented in Supplementary Material S1.

• Identification of the Value Types Directly Included in the Research Process within the Analysed Articles

The content analysis enabled the identification of academic articles in which specific value types were directly included in the research process. The results of this research step are presented in a set of tables (Appendix A, Table A1, Table A2, Table A3 and Table A4), organised according to the approach to cultural heritage preservation applied in the research process.

• Representation of the Value Types Directly Included in the Research Process within the Analysed Articles

Based on the identification of the value types directly included in the research process, it was possible to observe the degree of their representation through the analysed articles. The results of this research step are organised according to the four main approaches to cultural heritage preservation and presented in Supplementary Material S1.

3. Results

As a result of the Scopus database search and the analysis of a relevant data sample of the academic articles, the following are presented: (1) a bibliometric analysis, and (2) a content analysis.

3.1. Bibliometric Analysis

The bibliometric analysis carried out on the relevant sample of academic articles encompasses an examination of the (1) article publishing trends, and (2) source journals. The bibliometric analysis is not intended to be an end in itself, but to be a contextual layer that frames the subsequent content analysis. By tracing publication dynamics, journal outlets, and disciplinary clustering, it provides insight into how value-oriented heritage research has evolved alongside shifts in policy frameworks, methodological agendas, and applied heritage practices.

• Article Publishing Trends

Figure 3 illustrates the annual publishing trend of the analysed academic articles, considering the main approach to cultural heritage preservation (MBA, VBA, LHA, or HUL). It illustrates that researching these approaches gained prominence in 2010. The annual publication count indicates that the subject has been particularly topical in the last four years, as 57.81% of the analysed data sample (74 articles) were published between 2021 and 2024. It is also observed that, until 2018, research was oriented towards the analysis of various approaches; however, not all four main approaches were represented simultaneously. Since 2018, research focused on the HUL has emerged, accounting for 19.44% (seven articles) of the total data sample. Research focused on the MBA has appeared intermittently since 2010. From 2018, the number of published articles has increased, reaching 25% (seven articles) of the total data sample in 2023. The year 2021 was significant for researching the LHA, when 30% (six articles) of the total data sample were published. Articles emphasising the VBA became prominent in 2022, while in 2024 they comprised 19.3% (10 articles) of the total data sample. The observed increase in publications after 2010, and particularly since 2018, corresponds with the consolidation and wider uptake of integrative heritage frameworks, most notably the LHA and HUL approaches. This temporal pattern reflects a gradual shift from object- and fabric-centred conservation toward process-oriented, value-driven, and context-sensitive practices, in which questions of value identification, negotiation, and operationalisation become increasingly central. The uneven temporal representation of the four approaches also indicates that methodological experimentation with value assessment emerges at different paces, shaping how and when values are translated from conceptual frameworks into heritage preservation practices.

• Source Journals

Based on the analysis of the journals’ characteristics, it was established that 128 academic articles were published across 69 different journals (Supplementary Material S1). The most significant number of journals publish articles focused on researching the VBA (value-based approach) (47.83%, 33 journals), followed by the HUL (historic urban landscape approach) (30.43%, 21 journals), and the MBA (material-based approach) (30.43%, 21 journals), while journals dedicated to publishing articles which research the LHA (living heritage approach) are less represented (20.29%, 14 journals). Among the identified journals, only two have published articles that investigate all four main approaches (

Table 4. Journal information and number of articles (provided by authors, 2025).

Journal Information					Number of Articles
Journal	Publisher	Categories *	SJR 2024	CiteScore 2024	MBA	VBA	LHA	HUL
Buildings	MDPI	E	0.652	4.4	5	3		1
Built Heritage	Springer	A&H	0.418	2.4		1		2
Cities	Elsevier	BMA, SS	1.839	10.9		3
Conservation and Management of Archaeological Sites	Taylor & Francis	A&H, SS	0.170	0.9	1	1
HBRC Journal	Taylor & Francis	E, EPS, ES, MS, SS	0.263	1.4			1	1
Heritage	MDPI	A&H, MS	0.449	3.7	1	1		2
Heritage Science	Springer	A&H, Ch, CS, MS, SS	0.631	5.2	1	1
Historic Environment: Policy and Practice	Taylor & Francis	A&H	0.519	4.0				4
International Journal of Heritage Studies	Taylor & Francis	A&H, BMA, SS	0.802	4.4			1	1
ISVS e-journal	Center for Cities Uni. of Moratuwa	A&H, E	/	/		2	3
Journal of Cultural Heritage	Elsevier	A&H, Ch, CS, EEF, MS	0.726	6.2	3	1
Journal of Cultural Heritage Management and Sustainable Development	Emerald Publishing	A&H, BMA, SS	0.398	3.6	2	2	3	5
Journal of Place Management and Development	Emerald Publishing	BMA, SS	0.435	3.6				2
Land	MDPI	ES	0.773	5.9		1		4
Muzeologia a Kulturne Dedicstvo	Faculty of Arts Comenius University	A&H	0.424	1.5		1	1
Open House International	Emerald Publishing	E, SS	0.458	3.4			1	1
Sustainability	MDPI	CS, En, ES, SS	0.688	7.7	1	7	2	3

Note. * Categories: A&H—Arts and Humanities; BMA—Business, Management, and Accounting; Ch—Chemistry; CS—Computer Science; E—Engineering; EEF—Economics, Econometrics, and Finance; En—Energy; ES—Environmental Science; EPS—Earth and Planetary Sciences; MS—Material Science; SS—Social Sciences.

). The Journal of Cultural Heritage Management and Sustainable Development stands out particularly, with a total of 12 academic articles (9.37% of the relevant data sample). It spans the fields of Arts and Humanities, Social Sciences, and Business, Management and Accounting [71]. Although Sustainability also publishes articles exploring all four main approaches to cultural heritage preservation, evidenced by the fact that 13 articles (10.16% of the relevant data sample) appear in it, it has a particular emphasis on researching the VBA (value-based approach) and the HUL (historic urban landscape approach). It covers Social Sciences, Computer Science, Environmental Science, and Energy [72]. In addition to the aforementioned journals, 15 others have published two or more articles, each focusing on researching one of the four main approaches to cultural heritage preservation (Table 4).

The concentration of publications within a relatively limited set of journals further illustrates the institutionalisation of value-oriented heritage research within specific disciplinary and editorial contexts. Journals that consistently publish across multiple approaches function as key arenas where methodological conventions for value assessment are formed, stabilised, and disseminated. This concentration also suggests that the ways in which values are framed, prioritised, and operationalised are partly shaped by dominant publication venues, which in turn inform the patterns identified in the subsequent content analysis. Together, these bibliometric patterns informed the design and interpretation of the content analysis by indicating where dominant research agendas and publication practices are most likely to influence the recognition and direct operationalisation of cultural heritage values.

3.2. Content Analysis

The content analysis focused on the identification, representation, and direct inclusion of value types in the research process. The results are organised according to the four main approaches to cultural heritage preservation. They present the following: (1) article type, research arena, and value existence analysis, (2) representation of the value types recognised within the analysed articles, (3) identification of the value types directly included in the research process, and (4) representation of the value types directly included in the research process.

3.2.1. MBA: Material-Based Approach

• Article Type, Research Arena, and Value Existence Analysis

Analysing the academic articles focused on the MBA (material-based approach) (28 articles) indicates that they cover nine research arenas (Appendix A, Table A1), the most prevalent of which is heritage conservation (25%, seven articles). Research in each of the analysed articles involves the analysis of the case studies (100%, 28 articles), with some focusing exclusively on case study analysis (21.43%, 6 articles), and others applying a specific methodology to a case study (60.71%, 17 articles), or combining theoretical knowledge, a proposed methodology, and its application to a case study (17.86%, 5 articles) (Appendix A, Table A1). Furthermore, it was determined that three articles do not recognise any cultural heritage values (10.71%) [73,74,75]. In contrast, in seven articles (25%) [76,77,78,79,80,81,82], the term “value” is employed solely to explain specific parameters and characteristics that are not relevant to the problem and subject of this research. Conversely, in 14 articles (50%) [83,84,85,86,87,88,89,90,91,92,93,94,95,96], types of cultural heritage values relevant to this research were recognised. Specific value types were directly included in the research process in four articles (14.29%) [97,98,99,100] (

Table 5. MBA—identification of the value types directly included in the research process.

Authors	Value Typologies
Sevieri et al. [97]	Value index for specifying the level of significance: exceptional/considerable/some/little significance
Du et al. [98]	5-level linear absent section ratio for specifying conservation status: excellent/good/fair/poor/very poor
Akil et al. [99]	Aspects affecting the urban heritage evolution: socio-political/religious–cultural/technological–economic
Moscatelli [100]	One value type included: 1. Expressive value: Expressive character of the walls through the materiality of rough and tactile surfaces Sub-criteria: Materiality/surface roughness/texture and geometry

).

• Representation of the Value Types Recognised within the Analysed Articles

A total of 44 value types were identified, among which the most prominent are as follows: cultural (50%, nine articles), historical (44.44%, eight articles), architectural (38.89%, seven articles), and heritage (22.22%, four articles), as well as artistic and symbolic values (16.67%, three articles) (Supplementary Material S1).

• Identification of the Value Types Directly Included in the Research Process within the Analysed Articles

Although a large number of value types were recognised, only four articles demonstrated an effort to include them directly in the research process (Table 5). Among these, two articles employ valorisation to determine the level of significance [97] and the state of the cultural heritage’s preservation [98], while one article recognises the aspects influencing heritage development over time [99]. The research conducted by Moscatelli directly includes a specific value type—expressive value—in the research process [100].

• Representation of the Value Types Directly Included in the Research Process within the Analysed Articles

Given that only one value type—expressive value—was directly included in the research process within the analysed articles (Table 5), it was not possible to examine the representation of value types directly included in the research process through the analysis of articles focused on the application of the MBA (material-based approach).

3.2.2. VBA: Value-Based Approach

• Article Type, Research Arena, and Value Existence Analysis

By analysing the academic articles oriented towards the VBA (value-based approach) (44 articles), it was highlighted that they encompass eighteen research arenas (Appendix A, Table A2), among which the most represented is heritage preservation (27.27%, 12 articles). The most significant number of articles (36.36%, 16 articles) theoretically analyse a specific problem, define and develop research methods, and apply them to a particular case study (Appendix A, Table A2). From the 44 articles, content analysis determined that 28 articles (63.64%) [33,39,66,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125] recognise specific value types, whereas they are directly included in the research process in 16 articles (36.36%) [126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141] (

Table 6. VBA—identification of the value types directly included in the research process.

Authors	Value Typologies
Cutajar et al. [126]	Values included as “significance”: Evidentiary/associative/sensory/functional.
González Martínez [127]	Seven value types included: 1. Aesthetic; 2. Historic; 3. Scientific; 4. Social; 5. Architectural and urban; 6. Cultural; 7. Economic.
Tomić Reljić et al. [128]	Landscape values: Landscape vulnerability/evaluation of landscape areas/ public preferences Three value types included: 1. Naturalness of the landscape; 2. Qualities of the human landscape comprising visual and cultural aspects; 3. Qualities of natural resources comprising resources. Protection for the future development of primary activities characteristic of a certain area.
Duval et al. [129]	Seven value types included: 1. Domestic values; 2. Landscape values; 3. Economic values; 4. Educational values; 5. Scientific/historic values; 6. Spiritual values; 7. Symbolic values.
Kubalíková [130]	Three value types included: 1. Scientific value: Integrity/representativeness/rareness/ paleogeographical interest; 2. Added value: Ecological/aesthetical/cultural; 3. Use characteristics: Protection status/threats/accessibility/security/site context/ tourist infrastructure/interpretive facilities/ educational interest.
Acharjya et al. [131]	Seven value types included: 1. Aesthetic; 2. Architectural; 3. Cultural; 4. Historical; 5. Economic; 6. Spiritual/religious; 7. Societal.
Nikolić et al. [132]	Seven value types included: 1. Historical; 2. Urban; 3. Architectural; 4. Cultural; 5. Memorial; 6. Technical; 7. Monumental
Saha et al. [133]	Values included as “significance”: Historical/scientific/architectural/aesthetic/socio-cultural.
Trajković et al. [134]	Seven value types included: 1. Environmental; 2. Human; 3. Social; 4. Systemic; 5. Temporal; 6. Economic; 7. Aesthetic.
Liang et al. [135]	Nine value types included: 1. Outstanding universal value: material/immaterial; 2. Social; 3. Economic; 4. Art; 5. Historical; 6. Scientific; 7. Environmental; 8. Cultural; 9. Archaeological.
Zhang et al. [136]	Three value types included: 1. Heritage; 2. Economic; 3. Memory.
Azzopardi et al. [137]	Five value types included: 1. Transcendental values; 2. Contextual values: Intrinsic/instrumental; 3. Relational values; 4. Heritage value as part of total value; 5. Heritage value indicators: Economic/historic/educational/aesthetic. Recognised associated value concepts and indicators: Visitor numbers revenue/historic/employment/scenic/ gross value added/existence/place-based/ biocultural diversity/identity/spiritual/symbolic.
Ebejer et al. [138]	Two value types included: 1. Intrinsic: History/memory and identity/ scientific and technical/territorial and architectural; 2. Extrinsic: Landscape and aesthetic/environmental sustainability/ social and cultural/economic.
Vidyullatha et al. [139]	One value type included: 1. Historical value. Recognised notion of value: Architectonic and artistry/cultural–historical values/ environmental aesthetics/emotional experience/ social context/norms/visual versus the financial (economic)/possible use-values.
Cunha Ferreira et al. [140]	Eight value types included: 1. Social; 2. Economic; 3. Political; 4. Historic; 5. Aesthetic; 6. Scientific; 7. Age; 8. Ecological.
Loakaewnoo [141]	Values included through set of criteria: 1. Value of the historical and archaeological criterion; 2. Value of the age and ancientry criterion; 3. Value of the buildings, places, and archaeological sites’ condition criterion; 4. Value of the architectural and artistic criterion; 5. Value of the composition and image of city criterion; 6. Value of the importance to society and community criterion.

).

• Representation of the Value Types Recognised within the Analysed Articles

A total of 306 different value types were recognised within the analysed articles (Supplementary Material S1). Of these, the most prominent are the following ones: cultural (72.73%, 32 articles), aesthetic (56.82%, 25 articles), heritage (52.27%, 23 articles), economic, historical and social (50%, 22 articles); then historic and scientific (31.8%, 14 articles), intrinsic (29.55%, 13 articles), spiritual (27.27%, 12 articles), architectural, educational, and intangible (25%, 11 articles), environmental, human, and tangible (20.45%, 9 articles); followed by symbolic and use (18.18%, 8 articles), added, community and political (15.91%, 7 articles), ecological and identity (13.64%, 6 articles), and artistic and archaeological (11.36%, 5 articles).

• Identification of the Value Types Directly Included in the Research Process within the Analysed Articles

Specific value types were directly included in the research process in 16 articles (Table 6). Notably, some articles clearly define a set of value types directly included in the research process [127,128,129,130,131,132,134,135,136,137,138,139,140]. Additionally, some studies include defined indicators for the directly included value types [128,130,135,137,138]. Two articles use the term “significance”, equating it with values [126,133]. Furthermore, three articles identify criteria for recognising values [137,139,141].

• Representation of the Value Types Directly Included in the Research Process within the Analysed Articles

Based on a content analysis of the 16 articles, 105 value types were directly included in the research process. However, only 16 value types are represented in more than 10% of the analysed articles. Among these, the most prominent are the following: economic (56.25%, nine articles), aesthetic (43.75%, seven articles), cultural, historical, and scientific (37.5%, six articles), social (31.25%, five articles), architectural, educational, historic, spiritual, and symbolic (18.75%, three articles), and ecological, environmental, heritage, intrinsic, and landscape (12.5%, two articles) (Supplementary Material S1).

3.2.3. LHA: Living Heritage Approach

• Article Type, Research Arena, and Value Existence Analysis

An analysis of the academic articles focused on the LHA (living heritage approach) (20 articles) indicates that they encompass seven research arenas (Appendix A, Table A3), among which the most represented is heritage management (45%, nine articles). The majority of articles focus on case study analysis conducted either in part or throughout the entire article (90%, 18 articles). To a lesser extent, articles that predominantly analyse a research problem through a literature review and theoretical development within the research field are also present (10%, two articles), as are those focusing on a combination of a literature review and case study analysis (15%, three articles) (Appendix A, Table A3). The content analysis determined that 13 articles (65%) [38,44,142,143,144,145,146,147,148,149,150,151,152] recognise different value types, whereas 7 articles (35%) [45,153,154,155,156,157,158] directly include different value types in the research processes (

Table 7. LHA—identification of the value types directly included in the research process.

Authors	Value Typologies
Gao et al. [153]	Three groups of values included: 1. Values related to connection; 2. Values related to metaphor; 3. Values related to use.
Chandani et al. [45]	Five value types included: 1. Historic; 2. Aesthetic; 3. Architectural; 4. Social; 5. Spiritual and religious.
Heras et al. [154]	Six value types included (by stakeholders): 1. Aesthetic; 2. Gastronomic; 3. Landscape; 4. Use; 5. Social; 6. Historical. Two value types included (by experts in anthropology): 1. Use value; 2. Religious/spiritual value. Three value types included (by experts in conservation and architecture): 1. Historical value; 2. Aesthetic value; 3. Technological value. Two value types included (by experts in economy): 1. Use value (market value); 2. Non-use value (non-market value). Two value types included (by experts in history): 1. Historical value; 2. Aesthetic value. One value type included (by experts in sociology): 1. Social value.
Chalabi et al. [155]	One value type included: 1. Memory: History/events and celebrations/French colonisation/ childhood.
Osman et al. [156]	Recognised value of historical building: Historical interest/architectural merit/ social value and local interest/authenticity/rarity/ group value. Three value types included: 1. Intrinsic values: Personal/private/human development/sense of identity/relationship with self/cultural value/economical value/health and wellbeing; 2. Institutional values: Collective/public/community development/ sense of belonging/relationship with family/social value/citizenship and social cohesion; 3. Instrumental values: Collective/public/sense of place/relationship with others/ environmental value/education and employment.
Feng et al. [157]	One value type included: 1. Human cultural: Beliefs/customs/desires/attachments.
Nursanty et al. [158]	One value type included: 1. Islamic.

).

• Representation of the Value Types Recognised within the Analysed Articles

A total of 130 different value types of cultural heritage were identified (Supplementary Material S1). The most prominent among them are as follows: social (45%, nine articles), cultural (40%, eight articles), heritage and historical (35%, seven articles), aesthetic and economic (30%, six articles), and religious and use value (25%, five articles). Following these are the following: inherent, socio-cultural, and traditional (20%, four articles), as well as artistic, ecological, historic, intangible, intrinsic, spiritual, and tangible (15%, three articles).

• Identification of the Value Types Directly Included in the Research Process within the Analysed Articles

Among the analysed academic articles, specific value types were directly included in the research process in seven of them (Table 7). Notably, some articles clearly define a set of value types that were identified and directly included in the research process [45,154,158]. Additionally, other articles not only identify and directly include specific value types but also define corresponding indicators [153,155,156,157]. Particularly noteworthy is an article in which the value types are grouped according to the stakeholders which identified them [154], as well as a study focusing on the analysis of garden culture as heritage [153], in which, by cross-referencing theoretical data on garden values with interview data from garden owners, a specific value matrix is developed. The lack of “doing value” is also recognised as a distinct value type.

• Representation of the Value Types Directly Included in the Research Process within the Analysed Articles

Based on content analysis of the 16 articles, 25 value types were directly included in the research process (Supplementary Material S1). However, only two value types are mentioned in more than one article: aesthetic and social (28.57%, two articles). This outcome is a result of the specific nature of the topics studied, as well as the fact that in numerous articles, in addition to the identified value types, corresponding indicators that cover other value types are also identified, as shown in Table 7.

3.2.4. HUL: Historic Urban Landscape Approach

• Article Type, Research Arena, and Value Existence Analysis

An analysis of the academic articles focused on the HUL (historic urban landscape approach) (36 articles) indicates that they span eight research arenas (Appendix A, Table A4), among which the most represented is heritage management (55.5%, 20 articles). The majority of articles (77.78%, 28 articles) include case study analysis. Considering that this approach is relatively recent within the field of heritage preservation, articles focused on its theoretical and critical examination are also highly presented (22.22%, eight articles). Additionally, a notable number of articles combine theoretical analysis of the research problem, development of methodological tools, and their application to a case study (16.67%, six articles) (Appendix A, Table A4). Among the 36 articles analysed, content analysis found that 29 articles (80.55%) [37,48,54,55,56,57,58,59,61,63,64,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176] recognise different value types. However, only six articles (16.67%) [177,178,179,180,181,182] directly include specific value types in the research process (

Table 8. HUL—identification of the value types directly included in the research process.

Authors	Value Typologies
Rey-Perez et al. [177]	Six value types included: 1. Architectural; 2. Cultural; 3. Emerging; 4. Environmental; 5. Heritage; 6. Outstanding universal.
Rey-Pérez et al. [178]	Seven value types included: 1. Historical; 2. Architectural; 3. Urban; 4. Social; 5. Symbolic; 6. Natural; 7. Financial.
Colavitti et al. [179]	One value type included: 1. Outstanding universal.
Nouch [80]	Ten value types included: 1. Aesthetic; 2. Amenity and use; 3. Social, community, and cohesion; 4. Material; 5. Mobility; 6. Economic and commercial; 7. Associative; 8. Scientific and evidential; 9. Environmental and hydrological; 10. Governmental and political.
Wang et al. [181]	Four value types included: 1. Scientific: Scale/constructional level/functional value; 2. Artistic: Scarcity/integrity/aesthetic value; 3. Historic: Duration/integrity/historical relevance; 4. Social: Historical relevance/social relevance/anthropological significance.
García-Esparza [182]	Six value types included: 1. Historic; 2. Cultural; 3. Intangible; 4. Spiritual; 5. Social; 6. Identity.

), while one article does not address the notion of value [183].

• Representation of the Value Types Recognised within the Analysed Articles

A total of 171 different value types were identified among the analysed articles (Supplementary Material S1). The most predominantly represented are the following: cultural (71.43%, 25 articles), heritage (60%, 21 articles), intangible and natural (40%, 14 articles), historic and social (37.14%, 13 articles), outstanding universal (34.29%, 12 articles), historical (31.43%, 11 articles), and architectural and aesthetic (28.57%, 10 articles). Following these are the following value types: scientific (25.71%, nine articles), economic and tangible (22.86%, eight articles), symbolic (17.14%, six articles), archaeological, artistic, environmental, and spiritual (14.29%, five articles), and ecological, new, property, socio-cultural, and urban heritage (11.43%, four articles).

• Identification of the Value Types Directly Included in the Research Process within the Analysed Articles

Among the analysed academic articles, specific value types were directly included in the research process in six of them (Table 8). Some articles explicitly define a set of value types [178,179,180,182], while the corresponding indicators were identified in one article [181].

On the other hand, in the research conducted by Rey-Perez et al. [177], although value types were identified, the methodology for recognising and including them in the research process is not specified—this is justified by the article’s aim in presenting the scientific project’s results.

• Representation of the Value Types Directly Included in the Research Process within the Analysed Articles

Based on the content analysis of six articles, 30 value types directly included in the research process have been identified (Supplementary Material S1). However, only seven value types are referenced in more than one article: social (50%, three articles), and architectural, cultural, environmental, historic, scientific, and outstanding universal (33.33%, two articles).

4. Discussion

Based on the content analysis and the obtained research results, it was possible to compare and interpret them. Particular attention was paid to the following: (1) value representation in current approaches to cultural heritage preservation, and (2) identification of the dominance of specific value types/approaches in the process of cultural heritage preservation.

While the content analysis reveals clear patterns in the frequency and distribution of cultural heritage value types, its analytical scope lies in examining how values are framed, prioritised, and operationalised within contemporary academic practice. The dominance of certain value types should therefore be understood not as a direct reflection of societal or stakeholder-based valuation processes, but as an indicator of prevailing disciplinary conventions, methodological trajectories, and regulatory logics that structure heritage-related research. In particular, values such as scientific, artistic, historic, and social [181], as well as outstanding universal [135,179], tend to dominate because they align more readily with established planning instruments, assessment frameworks, and policy-oriented methodologies [9,12,184,185], making them easier to formalise and integrate into research designs. Conversely, relational, experiential, and socially negotiated values, although widely recognised, are less frequently operationalised due to their methodological complexity and reliance on participatory and perception-based research approaches [45,135,137,140,178,180,181]. This interpretive perspective is consistent with the refined research questions and the overall aim of the study, which is to provide a cross-cutting synthesis of how cultural heritage values are stabilised and mobilised within contemporary academic practice, thereby complementing applied [45,178,181], governance-oriented [135,182], and perception-based studies [137,140,154] that address value formation in specific contexts.

4.1. Value Representation in Current Approaches to Cultural Heritage Preservation

The comparison of the obtained research results involved analysing the degree of representation and direct involvement of specific value types in the research process within the analysed academic articles concerning the four main approaches to cultural heritage preservation. Figure 4 provides a synthetic depiction and numerical insight into the relationship between the recognised value types and those directly included in the process of cultural heritage preservation, on the one hand, and the applied approaches, on the other. It highlights discrepancies between the total number of value types that were recognised and those directly involved in the research process, both within a single approach (MBA: 44–1, VBA: 306–105, LHA, 130–25, and HUL: 171–30) and in their mutual comparison. Also, a difference was observed between the total number of recognised value types and those represented in more than 10% of the analysed relevant data sample (MBA: 44–13, VBA: 306–25, LHA, 130–18, and HUL: 171–23). The aforementioned discrepancy was also highlighted in the relationship between the total number of identified value types directly involved in the research process and those directly involved in more than 10% of the analysed relevant data sample (MBA: 1–1, VBA: 105–16, LHA: 25–2, and HUL: 30–7).

Rather than interpreting these discrepancies as methodological inconsistency or analytical deficiency, the results suggest that such variation may be inherent to the nature of cultural heritage values themselves. Value plurality, selective operationalisation, and uneven representation across approaches reflect the context-dependent and often conflicting character of heritage values [185], which are shaped by disciplinary traditions, research objectives, and institutional frameworks. In this sense, inconsistency should not be understood solely as a failure of methodological rigour, but also as an epistemologically productive condition that reveals how different approaches prioritise, stabilise, or bracket specific values in response to distinct analytical and practical demands. This reading aligns with recent empirical [137] and perception-based studies [140] that conceptualise value plurality and trade-offs as constitutive features of heritage processes rather than anomalies to be resolved. From this perspective, the uneven translation of recognised values into operational research categories does not necessarily indicate conceptual weakness, but instead exposes the limits of their formalisation.

At the same time, the observed patterns of value representation must be situated in relation to dominant normative heritage doctrines, such as those promoted by UNESCO [9,21,30,31,32] and ICOMOS [8,18,28,29], which have played a central role in structuring the vocabulary and categorisation of heritage values [1]. While these frameworks have been instrumental in broadening the understanding of heritage beyond material fabric, their widespread adoption within contemporary academic practice has also contributed to a certain terminological stabilisation that is not always matched by corresponding methodological innovation. As a result, values articulated within normative doctrines are frequently recognised at a conceptual level, yet only selectively translated into operational research tools. By critically positioning these findings vis-à-vis normative heritage frameworks, the analysis highlights a gap between doctrinal ambition and research practice. This gap has been increasingly problematised in recent scholarship that empirically tests, adapts, or challenges normative value categories through participatory methods [45,140], governance-oriented analyses [135,182], and context-sensitive modelling [178,181]. The discrepancies identified in Figure 4 can therefore be read as indicators of an ongoing tension between the normative expansion of value concepts and the practical constraints of their operationalisation within research- and planning-oriented contexts.

4.2. Dominance Identification of Specific Value Types/Approaches in the Process of Cultural Heritage Preservation

An insight into the relationship between all recognised value types and those directly involved in the research process within the analysed academic articles enabled the identification of 134 different value types directly included in the research process through the application of one of the four main approaches to cultural heritage preservation. Based on the obtained data, it was possible to conduct a comparative analysis aimed at identifying the potential dominance of (a) any of the four main approaches from the perspective of direct inclusion of specific value types in the research process, and (b) a specific value type, from the perspective of its direct inclusion in the research process through the application of two or more recognised main approaches to cultural heritage preservation.

Figure 5 includes a listing of all value types directly included in the research process through the application of one of the four main approaches. Specifically, it highlights the degree of the values’ inclusion within the analysed data sample. The dominance of the VBA is emphasised in terms of the number of value types directly included in the research process. Tracks on the circle of Figure 5 are allocated to each identified value type, and their lengths correspond to the level of inclusion of each value type within the analysed academic articles. Through the application of the MBA, only one value type—expressive—was directly involved in the research process. Furthermore, through the application of the VBA, the most frequently included value type is economic. On the other hand, through the application of the LHA, aesthetic and social values are equally included, whereas through the application of the HUL, the most frequently included value type is social.

Determining the dominance of a specific value type is contingent upon its inclusion in the research process through the application of two or more of the recognised main approaches to cultural heritage preservation. Figure 6 highlights that only 21 values are directly included. Specifically, five values (aesthetic, architectural, historic, historical, and social) are directly included through the VBA, LHA, and HUL. Four values (intrinsic, instrumental, landscape, and memory) are directly included through the VBA and LHA, whereas twelve other values (cultural, economic, environmental, heritage, identity, material, outstanding universal, political, scientific, spiritual, symbolic, and urban) are directly included through the VBA and HUL.

The observed dominance of the VBA in terms of direct value inclusion reflects its stronger methodological alignment with structured assessment frameworks, including criteria-based evaluation [130,136,137,138,179], specific value matrix development [134,153], and multi-criteria decision-support tools [127,154,178,181]. Unlike the MBA, which remains closely tied to fabric-oriented conservation logics, the VBA more readily accommodates formalised value translation mechanisms, enabling a broader range of values to be explicitly integrated into research designs. In this sense, dominance should be understood not as theoretical superiority, but as a function of methodological compatibility with evaluative and planning-oriented research practices.

Importantly, the absence of a newly proposed conceptual or methodological model in this study is deliberate. Rather than advancing an additional framework, the present review positions itself as a critical synthesis that maps how existing structured assessment models and multi-criteria approaches are selectively mobilised across heritage paradigms. By identifying which value types consistently traverse multiple approaches, and which remain confined to single frameworks, the analysis highlights points of convergence and fragmentation that can inform the further development and refinement of applied evaluative tools. The comparatively limited operationalisation of the LHA and HUL approaches should therefore not be read as a reiteration of normative critique alone, but as an empirical indication of the methodological challenges inherent in translating relational, socially negotiated, and process-oriented values into formal research instruments. Seen from this perspective, the dominance patterns identified in Figure 5 and Figure 6 reveal a structural tension between integrative heritage paradigms and the demands of comparability, reproducibility, and formalisation in contemporary academic research practice. Rather than signalling analytical weakness, the selective operationalisation of values across approaches exposes where current assessment models succeed, where they struggle, and where future methodological innovation is most urgently needed.

4.3. Limitations of the Study

Several limitations within the study scope should be acknowledged when interpreting the results. First, the analysis is based on a single bibliographic database (Scopus). While Scopus was selected due to its broad interdisciplinary coverage, metadata quality, and relevance to architecture- and heritage-related research, the inclusion of additional databases (e.g., Web of Science or discipline-specific repositories) may have resulted in a broader or slightly different dataset. In particular, reliance on a single indexed database may privilege certain publication geographies, institutional contexts, and traditions, while underrepresenting locally grounded or regionally circulated scholarship. Second, the study includes English-language publications only. This choice was made to ensure consistency and accessibility within the global academic discourse. However, it may have excluded relevant research published in other languages, particularly in regions where cultural heritage scholarship is strongly embedded in local academic traditions. This limitation is especially relevant in the context of Global South research, where critical, practice-oriented, and community-based heritage studies are often published in national journals, policy reports, or non-English outlets that fall outside mainstream indexing systems. Third, although the study adopts a bibliometric and content-analysis framework, the analytical lens is anchored in architectural and built-environment scholarship. This framing may have influenced the disciplinary distribution of the sample and the prominence of certain value types, potentially underrepresenting perspectives from the fields such as anthropology [186], sociology [187], archaeology [188], or legal heritage studies [189,190]. Fourth, the dataset is limited to peer-reviewed, open-access journal articles. This restriction was introduced to ensure a consistent and comparable analytical framework, grounded in sources that undergo multiple rounds of peer review and follow clearly defined research structures and methodologies. While this corpus is considered appropriate and relevant for the aims of the present study, the inclusion of books, edited volumes, and applied project reports could provide additional conceptual and methodological insights in future research.

These limitations do not undermine the validity of the findings but rather define the scope of the study. They should be understood as structural constraints inherent to large-scale bibliometric and content-analytic reviews, rather than as methodological shortcomings. They also point to clear directions for future research, including (1) multi-database searches, (2) multilingual sampling, (3) the systematic inclusion of monographs and edited volumes, (4) targeted inclusion of regionally situated and Global South scholarship, and (5) broader interdisciplinary integration.

5. Concluding Remarks

This study examined how cultural heritage values are recognised and operationalised within contemporary academic research practice, applying four main approaches to cultural heritage preservation. By explicitly distinguishing between value recognition and value operationalisation, the research provides a structured response to the three research questions.

In relation to RQ1, the results demonstrate that academic research recognises a broad and heterogeneous spectrum of value types across all four approaches. However, their representation is highly uneven across approaches. The VBA exhibits the widest range of recognised value types, reflecting its explicit conceptual openness to plural and multidimensional understandings of the notion of value. In contrast, the MBA recognises a substantially narrower set of values, in which cultural, historical, architectural, heritage, artistic, and symbolic values dominate. The LHA and HUL approaches occupy an intermediate position, recognising both tangible and intangible values, but with differing emphases: (1) social and aesthetic values are most prominent within the LHA, while (2) social value dominates within the HUL. These findings indicate that value recognition is strongly conditioned by the epistemological orientation of each approach, rather than by a shared or convergent understanding of cultural heritage values.

With respect to RQ2, the analysis reveals a systematic discrepancy between value recognition and value operationalisation. This gap is evident across all four approaches but is particularly pronounced in the MBA and LHA, where value recognition rarely translates into methodological integration. Even within the VBA, where the value operationalisation is most developed and 306 different value types are recognised, only 105 of them are directly included in the research processes. The findings thus demonstrate that value recognition does not imply methodological operationalisation, and that the majority of academic studies continue to treat values as descriptive or discursive references rather than as analytically actionable constructs.

Moreover, although 134 value types were directly included in the research processes within the analysed dataset, only 21 value types were directly operationalised by applying two or more recognised main approaches. Additionally, their number is smaller (21) compared to the number of value types for which the theoretical definition exists (35) [1]. Conversely, among the 21 value types, seven were noted (intrinsic, instrumental, landscape, environmental, material, urban, and symbolic) that are not included among the 35 value types with a theoretical explanation. The above suggests the need for simultaneous research on the theoretical definitions of the notion of value and its practical manifestation in cultural heritage preservation. Furthermore, it emphasises the importance of verifying and supplementing internationally recognised data sources as primary guidelines for responsible cultural heritage preservation, with new insights that highlight the potentials and limitations of applying theoretically defined approaches and principles in cultural heritage preservation.

Addressing RQ3, the study identifies clear patterns of selective dominance in value operationalisation. Across approaches, a small group of values—most notably aesthetic, architectural, historic, historical, and social values—dominates operational practices. On the other hand, numerous other recognised value types remain marginal or underoperationalised—such as intrinsic, instrumental, landscape, environmental, material, urban, and symbolic values—and lack stable or consolidated theoretical definitions within internationally recognised doctrinal sources [1]. Conversely, some theoretically well-established values exhibit limited practical uptake. This selective operationalisation suggests that current heritage preservation practices privilege methodologically convenient or policy-aligned values, rather than reflecting the full plurality of recognised values.

Taken together, these findings underscore the need to move beyond debates on value plurality toward methodological clarification and integration. For future research, this implies a shift toward explicitly linking recognised value types with transparent operational tools, including multi-criteria assessment frameworks, composite indicators, and participatory evaluation models. For policy formulation, the results highlight the necessity of critically reassessing normative heritage doctrines to ensure that their value vocabularies are supported by implementable methodologies. Finally, for heritage and tourism management practice, the findings point to the importance of aligning value-based decision-making with clearly articulated evaluative procedures, capable of accommodating both contextual specificity and value trade-offs. In this sense, the study positions value plurality not as a methodological limitation, but as an analytical condition that requires deliberate operational strategies if it is to inform contemporary cultural heritage preservation.