Search Results (26)

Amidst the rapid global urbanization and economic integration, coastal cities have undergone significant changes in urban spatial patterns. These changes have further worsened the complex urban thermal environment, making it crucial to study the interaction between human-driven development and natural climate systems. To address the insufficient quantification of marine elements in the urban planning of subtropical coastal zones, this study takes Xiamen, a typical deep-water port city, as an example to construct a spatial analysis framework integrating marine boundary layer parameters. This research employs interpolation simulation, atmospheric correction, and other techniques to simulate the inversion of land use and Landsat 8 data, deriving urban morphological elements and Land Surface Temperature (LST) data. These data were then assigned to 500 m grids for analysis. A bivariate spatial auto-correlation model was applied to examine the relationship between urban carbon emission and LST. The study area was categorized based on the influence of marine factors, and the spatial relationships between urban morphological elements and LST were analyzed using a multiscale geographically weighted regression model. Three Xiamen-specific discoveries emerged: (1) the marine exerts a significant thermal mitigation effect on the city, with an average influence range of 7.94 km; (2) the relationship between urban morphology and the thermal environment exhibits notable spatial heterogeneity across different regions; and (3) to mitigate urban thermal environments, connected green corridors should be established in the southern coastal areas of outer districts in regions significantly influenced by the ocean. In areas with less marine influence, spatial complexity should be introduced by disrupting relatively intact blue–green spaces, while regions unaffected by the ocean should focus on increasing green spaces and reducing impervious surfaces and water bodies. These findings directly inform Xiamen’s 2035 Master Plan for combating heat island effects in coastal special economic zones, providing transferable metrics for similar maritime cities. Full article

Trees in urban environments play a crucial ecological role, helping to mitigate air pollution, reduce urban heat islands, improve stormwater drainage, and provide essential ecosystem services such as biodiversity conservation. Street trees, in particular, form an interconnected network within the urban fabric, offering the potential to link various green spaces across the city. Several cities have implemented dedicated Street Tree Master Plans (STMPs) to manage street trees effectively. A STMP thus serves as both a vital tool for the management and conservation of urban tree heritage and an opportunity to enhance public spaces and the quality of life for citizens. This case study of Rome (Italy) presents a particularly complex challenge, partly due to the city’s rich historical heritage, where street trees contribute to the identity of places and the urban environment in the context of climate change. The tree heritage of Rome requires ongoing maintenance, the improvement of growing conditions, the replacement of hazardous or aging trees along street rows, and the addition of new trees to enhance and diversify the urban tree population. Starting from a new census of street trees and a spatial analysis using GIS methodologies, this study examines the approach taken by Rome’s STMP. It focuses on the different strategies proposed for various types of streets, classified on the specific role that trees play in each context. Specifically, the plan offers a strategic vision for the city’s future, rooted in its urban form and supported by a methodological framework for planning interventions based on the current condition of tree cover. Drawing on insights from the STMP, the findings emphasize that any comprehensive renewal of street trees in large cities with historically significant and aesthetically rich landscapes must be guided by a strategic vision. In the discussion, a comparative analysis was conducted on different STMPs in various cities around the world, and we questioned how significantly historical and spatial considerations, which characterized the formation of Rome’s STMP, should be part of all STMPs. Full article

Flood risks are escalating globally due to unplanned urban expansion and the impacts of climate change, posing significant challenges for urban areas and necessitating effective mitigation strategies. Nature-based solutions (NBSs) have emerged as innovative and sustainable approaches for managing flood risks. The International Union for Conservation of Nature (IUCN) defines NBSs as actions that conserve, manage, and restore natural and modified ecosystems to address societal concerns while benefiting both people and the environment. This research focuses on developing NBS strategies for the most flood-prone area within Kochi, a city highly vulnerable to flooding. The study begins with a comprehensive site examination to identify flood sources and causes in Kochi, aiding in selecting flood vulnerability indicators. An analytical framework incorporating flood risk assessment and exposure studies using physical and social indicators, alongside GIS mapping techniques, revealed that approximately half of Kochi is affected. The study identified key vulnerability hotspots, particularly within the Central Business District (CBD), where high population density and inadequate infrastructure exacerbate flood risks. Proposed NBS interventions include restoring natural floodplains, enhancing canal capacities, creating urban forests, and establishing green infrastructure like permeable pavements and rainwater harvesting systems. Key findings emphasize the effectiveness of integrating NBSs with traditional flood management strategies, forming a mixed flood control system. These interventions mitigate flood risks, improve biodiversity, reduce the urban heat island effect, and enhance community well-being. Importantly, the research underscores the role of public participation and community-driven maintenance plans in ensuring the sustainability of NBS interventions. Aligning these strategies with Kochi’s Master Plan 2040 ensures coherence with broader urban planning and climate resilience goals. The research anticipates changes in climate, land use patterns, and urban dynamics to inform NBS suitability in Kochi. Ultimately, the research demonstrates how implementing NBSs can deliver a range of socio-environmental benefits, significantly influencing urban development in vulnerable zones. By advocating for the integration of NBSs into urban infrastructure planning, this study offers a blueprint for resilient and sustainable flood management strategies that are applicable to other coastal cities facing similar challenges. Full article

The relocation of Indonesia’s capital to Nusantara in East Kalimantan has raised concerns about microclimatic impacts resulting from proposed land use and land cover (LULC) changes. This study explored strategies to mitigate these impacts by using dynamical downscaling with the Weather Research and Forecasting model integrated with the urban canopy model (WRF-UCM). Numerical experiments at a 1 km spatial resolution were used to evaluate the impacts of green and mitigation strategies on the proposed master plan. In this process, five scenarios were analyzed, incorporating varying proportions of blue–green spaces and modifications to building walls and roof albedos. Among them, scenario 5, with 65% blue–green spaces, exhibited the highest cooling potential, reducing average urban surface temperatures by approximately 2 °C. In contrast, scenario 4, which allocated equal shares of built-up areas and mixed forests (50% each), achieved a more modest reduction of approximately 1 °C. The adoption of nature-based solutions and sustainable urban planning in Nusantara underscores the feasibility of climate-resilient urban development. This framework could inspire other cities worldwide, showcasing how urban growth can align with environmental sustainability. Full article

This study deeply examines the livable environment in high-density cities like Macau, focusing on urban green spaces. The study introduces the “urban spatial naturalness degree” indicator, exploring its application with urban population growth and green space expansion. The research utilizes the planning indicator of “urban spatial naturalness degree”, and then explores the application paradigm of matching increments between urban population growth and green open space and a bottom-line planning indicator suitable for Macau. Among them, the “USND” indicator is defined as “the visual perception rate of blue and green natural elements in the three-dimensional space of urban land”, which is specifically expressed as “the average function of the occupation rate of urban green open space and the visibility rate of blue–green space of main street scenes”. Based on this, this paper estimates the incremental planning indicators of green open space in Macau and various urban areas during the implementation of the Master Plan of Macau (2020–2040). The results show the following: (1) The study found that the land increment in green open space in Macau basically matches the potential of reserve resources. (2) For Class I and Class II urban areas in Macau, the USND value is estimated to be 42.96% and 32.62% in 2040, respectively. These values are expected to reach the international excellent level. (3) For Class III and Class IV urban areas, the USND values could reach 20.14% and 15.14%, respectively, which are considered to be at the international middle level in 2040. Full article

While numerous studies have employed deep learning and high-resolution remote sensing to predict future land use and land cover (LULC) changes, no study has integrated these predictive tools with the current urban planning context to find a potential issues for sustainability. This study addresses this gap by examining the planning context of Busan Metropolitan City (BMC) and analyzing the paradoxical objectives within the city’s 2040 Master Plan and the subordinate 2030 Busan Master Plan for Parks and Greenbelts. Although the plans advocate for increased green areas to enhance urban sustainability and social wellbeing, they simultaneously support policies that may lead to a reduction in these areas due to urban development. Using the CA-ANN model in the MOLUSCE plugin, a deep learning-based LULC change analysis, we forecast further urban expansion and continued shrinkage of natural green areas. During 1980–2010, Busan Metropolitan City (BMC) underwent high-speed urban expansion, wherein the urbanized areas almost doubled and agricultural lands and green areas, including forests and grassland, reduced considerably. Forecasts for the years 2010–2040 show continued further expansion of urban areas at the expense of areas for agriculture and green areas, including forest and grasslands. Given the master plans, these highlight a critical tension between urban growth and sustainability. Despite the push for more green spaces, the replacement of natural landscapes with artificial parks and green areas may threaten long-term sustainability. In view of these apparently conflicting goals, the urban planning framework for BMC would have to take up increasingly stronger conservation policies and adaptive planning practices that consider environmental preservation on a par with economic development in the light of the planning context and trajectory of urbanization. Full article

The master plan has been a critical instrument for shaping the development of cities worldwide. This article delves into the impact of a well-designed master plan on shaping and transforming the structure of a city, while also exploring the various aspects that can be adapted in different contexts and conditions. The article aims to highlight how an effective master plan can drive development, guide urban growth, and offer a comprehensive framework for decision-making. Specifically, this study analyses the Latakia (SY) master plan, which was proposed in 2008, and compares it with the master plans of Barcelona (ES) and Montpellier (FR), two cities with significant experience in master planning. The analysis was conducted using several key criteria, such as general vision, housing policies, urban mobility, and green network. The results showed that urban development strategies in the Latakia master plan were of limited efficiency range compared to the other case studies, as it focused on tourism and economic development rather than providing an approach for sustainable city development. Therefore, this study recommends revising the development strategies of the Latakia master plan and addressing its limitations to improve the city’s structure, increase its sustainability, and quality of life. This article contributes to the existing body of knowledge on master planning by providing a critical evaluation of urban development strategies and offering a roadmap for future master plans. Full article

In 2020, the Sharjah Investment and Development Authority (SHUROOQ) initiated the Sharjah Sustainable City (SSC) project, with an investment of 2 billion AED (approximately 545 million USD) covering an area of 668,900 km². This pioneering residential community in the United Arab Emirates (UAE) provides its residents with access to renewable energy storage solutions while adhering to the highest standards of green economy and environmental sustainability. This paper aims to examine the urban planning components of SSC and establish suitable priorities for these elements. To achieve this, we first reviewed and extracted sustainable urban planning elements from existing research. These elements were then organized hierarchically for an expert survey, which was conducted via email. The results were subsequently analyzed using the analytic hierarchy process (AHP). Our findings revealed that the transportation system sector was deemed most important, with a score of 0.283, followed by the energy/building sectors at 0.263. Conversely, the park/green area held relatively lower importance, with a score of 0.092. Upon examining the relative importance of 15 specific planning elements (lower criteria), energy-efficient building design emerged as the most critical aspect (0.121). Other highly valued elements included public transportation-oriented development (0.115) and the use of renewable energy (0.102). In contrast, building greening (0.029), establishment of accessible greenway and green matrix in residential areas (0.029), and creation of hydrophilic features for the water circulation system (0.026) were perceived as less significant. This study is expected to serve as foundational data for the future implementation of the SSC master plan in Sharjah. Moreover, it offers valuable insights and a methodology for sustainable urban planning that can be adopted or adapted globally. The worldwide applicability of this research fosters knowledge transfer, international cooperation, and innovation, thereby promoting sustainable development, urban resilience, and progress towards the United Nations’ Sustainable Development Goals (SDGs), specifically, SDG 11 (Sustainable Cities and Communities) and SDG 13 (Climate Action). Full article

Urban areas concentrate more than 50% of the world’s population and are highly impacted by human activities, mainly due to high population density, directly affecting the micro-climate. In this sense, green infrastructures (GIs) have been pointed out to be helpful in mitigating these effects in large urban areas, where most of the studies were conducted. Therefore, this study evaluates the impacts on meteorological variables in a medium-sized city through the Weather Research and Forecasting model by implementing urban classes of Local Climate Zones (LCZ). Five urban parks and an urban lake were identified and expanded in the inner model grid to analyze the effects of GIs on meteorological variables in the urban environment. Results show that the 10 m wind speed can present an improvement for all statistical indices due to the better vertical representation of urban structures in the central urban area by the LCZ urban classes. In addition, green areas contributed locally to reducing the urban heat island (UHI) effects, resulting in cooling rates around these infrastructures. Compared to the lake, the use of the urban LCZ classes has proven to be an effective way to improve the representation of meteorological variables by a mesoscale weather model. Regarding GIs, this practice performs environmental services capable of mitigating the effects of UHI, sustaining the importance of these systems in urban projects, even for medium-sized cities. Finally, these findings provide support for public decision-makers in creating Master Plans for medium-sized cities regarding the implementation of GIs. Full article

There are numbers of various new infill constructions and renovations occurring in many cities annually that are based more on bottom-up initiatives by various stakeholders rather than top-down initiated plans according to a city master plan. Such infill modifications of urban structure might look small, not very numerous and insignificant at the first glance, but even small changes in a complex system such as a city can cause significant shifts in the functioning of the urban network. The presented research, developed on mathematical graph simulative modeling, including space syntax but not restricting the model to it, and employing the theory of four urban capitals by Lars Marcus, offers a way to analyze how the spatial, social, ecological and economic capitals of Kaunas will change if all the currently confirmed and publicly announced construction projects are implemented. The urban spatial network is seen as an integrator and enabler of interactions between the other three capitals. Each of the capitals is represented by quantitative data in the weighted mathematical graph: spatial capital by the perimeters of buildings accessible from a public space; social capital by the number of inhabitants; economic capital by the mean values of land prices; and ecological capital by the size of green areas and their infrastructure. All the data for modeling of changes in the capitals, except the future land prices, was based on information from implemented and planned projects. In order to predict them, a neural network tool was applied. Considering that changes in the absolute values of capitals are in essence limited by local context (e.g., number of inhabitants, market size, natural geographical conditions, and limits of spatial structure for densification), the idea of a positive synergy between urban capitals is proposed and explained in this article. All the presented simulation models are validated using independent open data as density of points of interests, etc. The results of the investigation reveal that synergy between capitals will decrease in Kaunas and that complex top-down coordination of bottom-up initiated urban projects is needed. Full article

Rapid urbanization has led to landscape fragmentation and habitat loss. As an organic structure integrating green space, an urban ecological network can effectively reduce ecological risks and protect biodiversity if its landscape connectivity is maintained. Chaoyang District in Beijing is facing the challenge of transformational development due to excessive urbanization. Taking this district as the study area, this study assessed the environmental impact of different development scenarios on landscape connectivity indices and explored the most relevant strategies for important green space patches by combining ecological network modeling (Graphab) and scenario simulation techniques (FLUS model). The results show that under the urban expansion scenario, the probability of connectivity (PC) decreases by 59.7%, while under the master plan scenario, it increases by 102.1%. Even under the ideal ecological scenario, the ecological network structure of the region faces structural problems. Patches and corridors with high delta probabilities of connectivity (dPC) are concentrated in the north, with no effective connection between the north and south. Finally, planning strategies and priorities for important patches under different urban development goals are proposed through a strategy matrix. Overall, this study proposes a framework for decision-makers to solve planning conflicts between urban expansion and biodiversity conservation, especially for cities in transition. Full article

Globally, authorities in rapidly growing cities have struggled to find sufficient green space for residents. Ulaanbaatar city of Mongolia has faced a similar situation due largely to drastically shrinking open land, especially after adopting a market-oriented economy in 1990. Amid the escalating urban congestion and growing concerns over pollution that ensued, the concept of urban green spaces began to gain more attention among Ulaanbaatar city officials. In 2014, the national government introduced the Green Development Policy to set aside 30% of the city’s residential area as green space by 2030. The Ulaanbaatar 2020 Master Plan and Development Approach for 2030 similarly set goals to increase green space per capita to 30 m². However, the current share of green space in the city is only 1.8% and 0.12–5 m²/person. Most case studies on urban green space policies and institutional arrangements focus on large cities in European countries with a relatively low population growth rate compared to those in developing countries. Therefore, this paper attempts to understand why Ulaanbaatar has not been able to increase green space despite its ambitious policy goals for many years. To do so, we examined the policy documents and institutional arrangements. We also conducted personal interviews with government specialists. As a result, we found four main challenges: (1) actions to increase green space were weak; (2) action plans were not clearly laid out for government officials to follow; (3) where stakeholder coordination was needed, administrators did not have sufficient resources and frameworks to do so, and (4) promised plans were not financially feasible. Overall, these findings indicate a necessity to strengthen urban green space monitoring and sufficient budget mobilization. Full article

Traditional land-use planning models have proven inadequate to address contemporary issues in sustainable development and protection governance. In recent years, new ‘performance based’ approaches that integrate ecosystem services (ES) provided via green infrastructure (GI) into traditional spatial planning models have been proven to reach a higher level of environmental performance, necessary to improve quality of life for all people. In Italy, there are no mandatory planning instruments to design and manage GI, which still remains a component of the traditional land-use plan. Here, the development of urban green spaces (UGS) based on ‘quantitative assessment’ is not suitable for guaranteeing the supply of ES. In addition, the scarcity of financial resources to develop ‘green standards’, as prescribed in the land-use plan to strategically design the GI, is an issue for most Italian public administrations. The paper provides the results of a test case conducted in a public green area of the city of Ancona, where the experimentation of a diversified maintenance strategy of an urban lawn significantly reduced the management cost and improved the environmental performance of green spaces. The identification of a unified management strategy to be applied to all the public UGS can help to achieve better results in support of sustainability, to redesign the continuity of GI and to develop strategies for future urban green master plans. Full article

The 21st century challenges, in particular those of climate change, population growth, air pollution and the COVID-19 pandemic global health crisis, demand greater emphasis on infrastructure facilities capable of keeping pace with population needs in well-being, health and economic prosperity. Green infrastructure aimed to intensify ecological processes in built-up areas and deliver vital ecosystem services is of a key significance for Russia, one of the most urbanized countries in the world. The article is dedicated to the issue of providing cities sustainability through creating a basic element of the urban green infrastructure—a public green network—by incorporating and linking a variety of already existing urban environmental components, both spatial and linear, such as natural areas, squares, parks, streets, boulevards, embankments and others. The territory of the case study is Krasnodar region located in the southwestern part of the North Caucasus, the warmest region of Russia characterized by highly varied urban areas. The authors propose the multiple criteria method for evaluating the existing GreenPS and creating a GreenPS framework for six cities located in Krasnodar region both on the southern seaward part and on the northern steppe part. This approach is focused on the sustainable development of the cities, adaptation to climate change and the prevention of local risks with respect to the preservation of ecosystem functions and cultural heritage. The methodology includes three stages: investigating and evaluating the present state of the existing urban GreenPS; defining sustainability potential; and the submission of master plan proposals for the improvement and further development and management of the GreenPS network implementing nature-based solutions. In addition, it follows seven main integral criteria, namely, Accessibility, Density, Sufficiency, Continuity, Diversity, Value and Clean and Sanitary, illustrated by ray diagrams. The results of the study show good potential for construction in Krasnodar region cities of an efficient GreenPS network integrating ecological and social city components. The flexibility of the method proposed makes it replicable for any other city aimed at creating a GreenPS network in sustainable, climate-change-adapted cities. Full article

With the continuous expansion of urban construction land, the green belts aiming for ecological protection have ensured a sustainable and effective function of regional ecosystem services. At the same time, these ecological green belts are expected to develop their compound service potentials with the development of cities. In order to meet the increasing demand of urban residents for the recreational utilization of urban green space, the primary function of the ecological green belts has transformed from being purely ecological to a combination of being ecological and recreational. Based on social media data, which has the characteristics of a large amount of accessible geographic information, this study used multiple regression models to analyze the recreational utilization intensity of ecological protection green belts with a case study in the green belt of Shanghai, China. The research results showed that the internal elements (total external area, water area, etc.) of the Shanghai green belt have positive correlations with its recreational utilization. The impact of external factors was inconclusive on the recreational utilization of the outer forest belt (the number of subway stations in accessibility factors was negatively correlated; the number of cultural facilities and the number of restaurants in the surrounding service facilities were positively related). Combined with the “Shanghai City Master Plan (2017–2035)”, this study suggests potential zones for the recreational transformation of the Shanghai green belt, provides a theoretical and practical basis for improving the recreational utilization of an urban ecological protection green belt and contributes to the sustainable development of ecological protection green belts in high-density cities. Full article