Urban Science

The importance of cities hinges on how they connect with other cities globally, yet research has been lacking in the exploration of virtual linkages. This study takes Guangzhou and Shenzhen as samples to measure their virtual urban linkage with other cities in China. First, it improves the gravity model by considering the impact of distance on call intentions in the context of phone conversations. Second, it uses call detail record (CDR) data to measure urban linkage based on the enhanced gravity model. Lastly, it employs a more effective geodetector to analyze the driving factors. The results indicate the following: cities in the southeast exhibit significantly higher connectivity; Guangzhou’s linkage is more pronounced than Shenzhen’s; and the volume of import and export trade is a stronger indicator of urban linkage. The urban linkage measured through CDRs offers new insights into the study of urban linkage. Full article

This paper examines the various functions of urban parks in the city of Novi Sad (Serbia). This study’s respondents were landscape architecture students, and the methodology employed was a survey, which was subsequently analyzed using multiple statistical tests. This paper explores the different roles that urban parks in Novi Sad play, such as aesthetic, ecological, recreational, psychological, economic, and educational functions. The analysis also includes an assessment of the correlation between the scores for each function and visitors’ habits and behaviors (e.g., frequency and duration of visits). Together, these findings provide detailed insight into the current state of urban park functions in Novi Sad and highlight how these functions relate to visitors’ experiences. The results obtained are valuable for enhancing both the quality of park visits and the overall functionality of urban parks. This paper also provides recommendations for future research, including potential methodologies to be applied and directions for a more detailed assessment of ecological functions. Full article

Smart furniture (smart cities) can provide publicity, mobility services and local government communication, among many other services; however, its use for improving the quality of life of the elderly (extended IP-spaces concept) can be further researched. This paper describes the first step in a collaborative design of a smart city platform based on this concept. This design requires a layered design, as it includes architectonic, artistic, technological and social aspects. Participatory design (PD) and participatory action research (PAR) methodologies were selected to include the elderly in the design to ensure the acceptance and usability of the system. During this specific design process, three groups of elderly people from three geographic points of Spain were recruited. PD was applied to capture the users’ preferences and general specifications regarding the architectonic aspect of the project, while PAR was used to capture these groups’ quality-of-life needs, determine the initial acceptance of the project and define the initial activities to be realized for mitigating the detected needs. The application of these qualitative methodologies should produce a user-centric, valuable but local (specific) design. As more groups and towns will be involved, the new local designs will build a bigger set of validated solutions that potentially could be customized and reused for other contexts. Full article

Contemporary urban environments continuously transform and evolve due to rapid urbanisation and development pressures, putting historical and cultural heritage sites at risk. To cope with this, it is essential to frequently re-evaluate and redefine protective boundaries and strategies for developing them to reflect current and emerging urban patterns. Defining protection boundaries is an inherently complex task consisting of intricate and interrelated spatial, social, and cultural networks and elements. What is more, the data layers used to represent different dimensions of cities are diverse and generated by various sources. In order to make any decision capable of addressing this multifaceted problem, it is essential to employ a thorough decision-making framework capable of accounting for multiple criteria. In this study, a combination of the Analytical Hierarchy Process (AHP) integrated with Geographic Information System (GIS) offers a structured approach to managing the complexities of setting these protective zones. Despite their extensive use in diverse site selection contexts, applying AHP and GIS to determine urban protection boundaries remains underexplored. The method was explored and tested in a case study in North Cyprus. The proposed method systematically includes economic, architectural, environmental, social, and legal data layers, aiming to generate a more comprehensive model for developing protection boundaries tied to multidimensional and contextual complexities, as well as considering rapid urbanisation patterns. The study contributes to the ongoing discourse on heritage preservation and sustainable urban development by providing an evidence-based analytical method for managing the evolving challenges of urban heritage protection. The results indicate that experts see social and environmental factors as the most significant, emphasising the significance of community engagement and ecological considerations in heritage conservation. Additionally, the study highlighted regulatory gaps, particularly in maintaining architectural compatibility within the historical context. These findings underscore the importance of integrating stakeholder perspectives and adjusting local regulations to enhance the resilience and effectiveness of heritage protection strategies. Full article

In low-demand areas, optimizing public transport operations requires strategies that go beyond infrastructure improvements. Among the various influencing factors, time wealth—the perceived freedom and flexibility in managing one’s time—emerges as a critical component in encouraging public transport use. Temporal factors like time cost and scheduling inconvenience often hinder usage, making time-related perceptions essential for effective and inclusive transport strategies. This study investigates time wealth as a component of perceived behavioral control in shaping public transport intention. Using empirical surveys in Japan, factor analysis and structural equation modeling identified three dimensions of time wealth and assessed their influence on behavioral intention. Results show that greater time wealth reduces the perceived difficulty of using public transport, thereby enhancing user intention. Positive attitudes and awareness support effective public transport interventions. While improving accessibility and convenience is important, addressing fare affordability is equally vital. A balanced approach that enhances both the experiential and financial aspects of public transport is crucial for maximizing its utilization. These findings highlight the need for integrated strategies that enhance both temporal and financial aspects to boost public transport use. Full article

Rapid urbanisation in Sub-Saharan Africa demands innovative land management strategies that promote sustainable, inclusive, and resilient urban development. This study investigates the potential of land readjustment (LR) to foster neighbourhood-scale social–ecological urban resilience (SEUR) through a case study of the Nunga LR project in Kigali, Rwanda. Grounded in the social–ecological system (SES) theory and operationalised through the social–ecological land readjustment model for resilient neighbourhoods, the research evaluates LR practices against an integrated benchmark framework combining LR aspects, neighbourhood design standards, and resilience attributes. The study uses secondary data, project shapefiles, and key informant interviews to assess how Rwanda’s emerging LR model contributes to resilient neighbourhood development. Findings demonstrate strong community mobilisation and adaptive governance capacity. However, critical resilience dimensions—including modularity, green infrastructure integration, land-use diversity, and adaptive feedback mechanisms—were only partially operationalised. Consequently, while LR improved spatial formalisation and basic infrastructure provision, it fell short of creating a truly resilient, multifunctional neighbourhood ecosystem. These findings highlight the need to reframe LR from a purely technical land management tool into a systemic resilience-building mechanism. Policy recommendations include mandating green/blue infrastructure in LR plans, establishing innovative financing mechanisms, institutionalising adaptive monitoring, strengthening affordability safeguards, and promoting multifunctional spatial layouts. The study contributes to urban resilience and land governance scholarship by offering a context-sensitive, empirically tested model for integrating SEUR principles into LR practice in rapidly urbanising African cities. Future research should pursue longitudinal analyses and dynamics modelling of land readjustment impacts to deepen understanding of urban resilience pathways in the Global South. Full article

In many European cities, old urban centres, particularly historical centres, reveal significant limitations to the intervention of civil protection agents—namely, firefighters—in terms of their mobility and action in emergencies, thus conditioning their action. This article analyses the case of a Portuguese city (the city of Ílhavo), proposing possible solutions applicable to territories with these specificities. This study was developed with the support of a literature review and field work that accompanied the actions of the local fire department. The proposals include new technical solutions (such as underground dry pipeworks), measures regarding traffic restrictions, the adequacy of signage, and recommendations for training the population living in these areas to intervene in fire situations. This study was developed through monitoring several interventions by the local fire department in real emergencies, allowing for the identification of some existing limitations in its activity resulting from the specific characteristics of the old urban centre. Measures already adopted in other Portuguese cities to improve mobility and reduce the negative impact on firefighters’ work in historical centres are also mentioned. It is also recommended that all civil protection agents be closely involved in planning and designing these urban rehabilitation interventions when carrying them out in these areas. Full article

This research focuses on the impact of smart city technologies on urban tourism, specifically analyzing Amsterdam, Barcelona, and Vienna, while also considering implications for smart tourism development in Belgrade and other Serbian cities. The aim of the study was to examine how smart city technologies contribute to enhancing the efficiency, digital engagement, and sustainability of urban tourism. A representative sample of 1239 tourists was surveyed, with a balanced gender representation and a predominance of younger respondents, indicating that smart tourism initiatives should cater to tech-savvy travelers. The study employed a questionnaire with 31 statements ranked on a five-point Likert scale, and factor analysis and Structural Equation Modeling (SEM) identified three key dimensions: smart efficiency, smart travel, and digital enhancement. These factors highlight how smart technologies optimize urban mobility, enhance travel experiences, and improve tourist engagement. The research confirms the initial hypothesis that integrating smart city technologies enhances urban tourism efficiency and sustainability. Additionally, the study adopts a positivist epistemological approach, emphasizing empirical analysis and statistical validation to derive generalizable findings. The results provide valuable insights for policymakers and stakeholders aiming to develop sustainable urban tourism strategies in Serbian cities. Full article

Understanding building energy demand is critical for addressing climate uncertainty challenges and ensuring sustainable urban growth. This study develops a building energy demand (BED) model to explore how climate variation and urban expansion affect residential and commercial space heating and cooling demands in Morocco for three scenarios, namely, 2005, 2018, and 2018 + 1.5 °C. The results show that coastal cities have lower heating and cooling needs due to the oceanic influence, while interior cities require significantly higher heating demand per-unit-floorspace. Between 2005 and 2018, urban growth increased total heating and cooling demand by 218.8 GWh, particularly in northern and coastal regions, despite per-unit-floorspace reductions in milder climates and improved building efficiency in 2018. Residential heating remains the dominant energy use, though commercial demand is significant in urban centers. Under the 2018 + 1.5 °C hypothetical scenario, heating demand across Morocco declines by 335.8 GWh compared to 2018, with urban areas amplifying this trend. Meanwhile, cooling demand increases slightly by 44.4 GWh, with major cities experiencing relative increases of up to 50%. These findings highlight a trade-off where reduced winter heating needs are partly offset by increased summer cooling demands in densely urbanized areas. The study identifies key urban hotspots for targeted interventions, emphasizing the need for energy-efficient building designs, climate-adaptive urban planning, and resilient energy management strategies to sustainably address shifting seasonal energy patterns. Full article

Setúbal Peninsula (SetPe) has played a critical role in Portugal’s industrial history, symbolizing economic growth in the 1960s and serving as the centre of the working-class movement during the Carnation Revolution. This study examines the impacts of deindustrialisation and integration into Global Network and Chain Structures (GNCS) on the region’s daily life and urban areas. Despite the decline in industrial employment and the challenges posed by abandoned industrial areas, the region has remained connected to GNCS through existing industrial facilities. The study utilised both quantitative and qualitative methods to analyse these transformations and highlighted the region’s vulnerability in the face of these global processes. The findings suggest that integration into GNCS in SetPe has led to economic dependence on multinational companies, social and cultural decline, and challenges in urban redevelopment. Full article

Understanding the spatiotemporal distribution of air pollution is critical for improving urban air quality. Advances in wireless sensor networks have made it possible to monitor air pollution across cities at higher spatiotemporal resolutions. The new spatial coverage allows the novel implementation of advanced statistical methods to detect spatially important, coherent patterns in environmental flows. In this study, we apply proper orthogonal decomposition to a spatial distribution derived from 34 particulate matter sensors, which collected data over 250 days across the Liverpool City Region in England, to identify a set of spatially orthogonal modes. The dominant mode exhibits a daily periodicity in the increases of particulate matter, with higher increases in residential areas interpreted as changes driven by daily commutes. The second mode highlights seasonal changes, and the third mode alludes to pollution transportation with simultaneous increases and decreases. In contrast with traditional time series and spatial analyses, proper orthogonal decomposition enables the elucidation of patterns that otherwise might remain hidden. Our findings highlight the benefits of urban wireless sensor networks and demonstrate the applicability of proper orthogonal decomposition in studying the movements of polluted areas and their correlations with meteorological variables and anthropogenic factors. Full article

This study models changes in land cover and land use in the intermediate city of Puerto Montt, Chile, up to 2050. Three distinct time periods—1988, 2005, and 2020—were used to examine Puerto Montt’s urban growth during these years. These periods were described using the Local Climate Zones (LCZ) technique. Urban growth scenarios were simulated using the Patch-generating Land Use Simulation (PLUS) model. Using Machine Learning (ML) techniques, this model has been widely utilized to explain how urban growth patterns have evolved based on the dynamics that drive changes in land use and land cover. Three scenarios were developed for this study: Business-As-Usual (BAU) (S1), Urban-Regional Planning (S2), and Conservationist (S3). According to the findings, Puerto Montt is predicted to undergo morphological changes by 2050, shifting from rural areas primarily composed of woods and agricultural land to open, low-density, low-rise areas outside the municipal limits set by the Communal Regulatory Plans. According to this study, Puerto Montt’s relative entropy level was high, ranging from 0.87 to 0.96, with a maximum value of 1.00 by 2050. These findings are anticipated to provide planners and decision-makers with further knowledge on the territorial design of upcoming urban areas. Full article

Amid rapid urbanization and persistent food insecurity in Latin America, urban gardens have emerged as sustainable alternatives to conventional agriculture. This study evaluates the technical and economic efficiency of producing four vegetables (lettuce, Swiss chard, spinach, and tomato) in urban and conventional systems in Puebla, Mexico. Using a stochastic frontier model, the analysis integrates key environmental costs, specifically, water-use efficiency and nutrient balance valuation, to assess the sustainability trade-offs. The results show that urban gardens achieve comparable efficiency to conventional systems while reducing water use by up to 66% and optimizing nutrient cycling. These findings support urban agroecological models as viable strategies for local food production and provide actionable insights for municipal policies aimed at enhancing urban food resilience and environmental performance. Full article

The concepts of equity and spatial justice may be relatively vague and therefore susceptible to different interpretations and metrics, leading to different evaluation perspectives. Thus, our central objective in this work is to explore the scientific production around these two concepts through the lens of transportation, focusing on their connections and interpretations. A mixed-approach analysis (network analysis and semi-systematic review) using Scopus, Web of Science, and Transportation Research International Documentation databases and VOSviewer software reveals that for transportation-related research, equity is more prominent than spatial justice. Accessibility emerges as a key concept for evaluating distributive issues in both contexts. The limited number of papers found may suggest either a gap in research or a mismatch between the terms within the field. Full article

It is known that bio-physical alterations in ecosystems change the relationships between people and their environments. The urban ecosystems cannot be managed without considering the role of green spaces. In Pakistan, many such eco-systems exist, regulated and monitored by well-established authorities. However, they do not have practical frameworks to manage them. In this context, this research examines the decline of the natural ecosystems of Lahore and the roles and responsibilities of the authorities towards this decline. This research employs both qualitative and quantitative methods to gather data: questionnaires, interviews and satellite observations. Questionnaires administered by the researchers gathered information from the people taking care of these places and interviews with the people responsible for planning and managing the city ascertained the issues related to monitoring and maintenance of the green spaces. Satellite data provided information related to the changes in land use from 2010–2018, which indicated diminishing green spaces. The findings reveal extensive transformations in land use and a significant increase in built-up land, resulting from irregular and unmonitored expansion of the city. These indicate that the decline of the natural ecosystems of Lahore is a result of two failures of the authorities: ineffective implementation of policies and poor coordination among stakeholders. Weaknesses in the maintenance of the eco-systems and negligence in the monitoring systems have also contributed. This research therefore concludes that the poor monitoring system has led to the decline of the natural ecosystems and an increase in random and synthetic growth of the city of Lahore despite it having a well-established network and laws. Full article

Rapid urbanization in the Global South poses challenges to ecological integrity, cultural heritage, and equitable access to green infrastructure. This study evaluates the effectiveness of recent green infrastructure projects in Addis Ababa, Ethiopia, including flagship parks and upgraded road corridors, through the lens of the Urban Nature Futures Framework (UNFF). To operationalize the UNFF’s three perspectives—Nature for Nature (NN), Nature for Society (NS), and Nature as Culture (NC)—a context-specific set of indicators was developed through the existing literature, global assessment frameworks, and stakeholder consultations. A mixed-methods approach, combining structured surveys with both qualitative and quantitative thematic analysis, was applied across four stakeholder groups: residents, park visitors, corridor users, and experts. The results indicate that while social benefits (NS) are widely recognized, ecological (NN) and cultural (NC) dimensions receive comparatively less emphasis. Regression analysis shows that education, employment, and green space use frequency significantly shape perceptions of NS and NC, while NN are more consistently shared across groups. This study demonstrates the practical value of the UNFF as an assessment tool and offers a replicable methodology for evaluating multifunctional green infrastructure. The findings underscore the need for more inclusive, biodiversity-positive, and culturally grounded urban renewal strategies. These insights are relevant for planners and policymakers aiming to foster equitable and resilient urban environments in rapidly growing cities. Full article

There is mounting evidence and concern that humanity is failing to equitably meet social needs while overshooting the Earth’s ecological boundaries. Efforts to monitor progress towards equitable urban sustainability have expanded significantly over the years; however, challenges remain in comprehensively assessing and comparing the progress made in different settings. To stimulate critical thinking and guide capacity-building efforts, we assessed the main dimensions and indicators used to monitor urban sustainability and equity in a selection of European cities. We analysed city reports to identify major recurring underlying themes, which we framed as guiding questions, and suggested areas for further development. The purpose was not to highlight the strengths and limitations of specific cities’ efforts. Our critical assessment identified several areas that require attention: the need for the more explicit use of theories or conceptual frameworks to select dimensions and indicators and to frame problems (and subsequently to guide intervention design); the standardisation of indicators; and improved data availability, reliability, and disaggregation to support data capturing, reporting, and comparability across settings. Despite meaningful progress, further efforts are needed to strengthen cities’ capacities to measure, monitor, and report on equitable urban sustainability. These efforts should be complemented with educational initiatives to foster the socio-cultural and behavioural changes necessary to achieve more equitable, sustainable, and healthy urban environments. Full article

With increasing concerns over climate change and air pollution, sustainable transportation has become a critical component of modern city planning. Bike-sharing systems have emerged as an eco-friendly alternative to motorized transport, contributing to energy conservation and emission reduction. To elaborate on bike-sharing’s contribution to urban sustainable development, this study conducts a quantitative analysis of its environmental benefits through a case study of the Bluebikes program in the Boston area, using a longitudinal dataset of 20.07 million bike trips from January 2015 to December 2024, with data between January 2020 and December 2021 excluded. A combination of Scheiner’s model and Multinomial Logit model was adopted to evaluate the substitution of Bluebikes trips, an optimized Seasonal Autoregressive Integrated Moving Average (SARIMA) model was employed to predict future usage, while energy savings were calculated by estimating reductions in gasoline and diesel consumption. The findings reveal that during the analyzed period, Bluebikes trips saved 2616.44 tons of oil equivalent and reduced CO₂ and NO_X emissions by 7614.96 and 16.43 tons, respectively. Furthermore, based on the historical trends, it is forecasted that the Bluebikes program will annually save an average of 723.66 tons of oil equivalent and decrease CO₂ and NO_X emissions by 2422.65 and 4.52 tons between 2025 and 2027. The results highlight the substantial environmental impact of Bluebikes and support policies that encourage their usage. Full article

This article analyzes population movement patterns in the Vysočina Region, Czechia, using mobile network geolocation data. Geolocation data provide new insights into population movement and structure, capturing real-time fluctuations in population size at different times of day and days of the week. The article aims to contribute to a better understanding of spatiotemporal population dynamics and identify links between movement patterns and different types of areas. Key mobility trends, such as work commuting, seasonal migration related to second homes and tourism, and the influence of urbanization on movement patterns, are identified. A scaling approach for categorizing municipalities based on their characteristics is proposed and tested in a case study of Vysočina Region municipalities. Furthermore, a case study of various municipality types demonstrates the practical application of geolocation data in spatial planning. The results highlight the value of these data for spatial planning, enabling a better understanding of population needs and optimization of public services and infrastructure. Full article