Capturing open space fragmentation in high–density cities: Towards sustainable open space planning

Yu, Peiheng; Yung, Esther H.K.; Chan, Edwin H. W.; Wang, Siqiang; Chen, Youlin; Chen, Yiyun

doi:10.1016/j.apgeog.2023.102927

Cited by 19 publications

(8 citation statements)

References 73 publications

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“…As typical geospatial remote sensing data, the LandScan high-resolution population dataset records global population density; it is produced by the US Department of Energy, Oak Ridge National Laboratory [51]. Compared to traditional statistical data, it provides convenient insights to understand population distribution on a large spatial scale with relatively low cost, facilitating the more accurate determination of urban form [52]. (2) During preprocessing, the remote sensing data are resampled to 1 km and the ADA is recorded to the prefecture-level city.…”

Section: Methodological Frameworkmentioning

confidence: 99%

Spatiotemporal Linkages between Administrative Division Adjustment and Urban Form: Political Drivers of the Urban Polycentric Structure

Chen,

Wang,

et al. 2023

Land

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As a crucial government strategy for spatial management and resource allocation, administrative division adjustment (ADA) provides interesting insights in the investigation of the polycentric urban structure (POLY). Using high-resolution geographic grid population data, this study aims to interpret complex linkages between ADA and POLY. Specifically, this research explores the dynamic evolution of POLY and ADA, investigates the spatiotemporal impact of ADA on POLY based on geographically and temporally weighted regression models and analyzes the differences in socioeconomic driving forces for POLY in cities with and without ADA. The results demonstrate that the value of POLY had a rising trend during the study periods. In terms of spatial pattern, POLY has a higher value in the Eastern region and a lower value in the Western region. The influences of ADA on POLY are also characterized by spatiotemporal heterogeneity. The impact of ADA on POLY has a higher value in Eastern and Western China and a lower value in Central and Northeastern China. In addition, the impacts of socioeconomic factors on POLY between cities with and without ADA differed significantly in Central and Western China while differing insignificantly in Eastern and Northeastern China. To promote the balanced development of administrative institutional structures and urban spatial transformation, ADA should be selectively implemented to facilitate POLY following the level of population, economic and productive development in each region.

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Section: Methodological Frameworkmentioning

confidence: 99%

Spatiotemporal Linkages between Administrative Division Adjustment and Urban Form: Political Drivers of the Urban Polycentric Structure

Chen,

Wang,

et al. 2023

Land

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“…Although these forms of open space fragmentation have been separately recognised, they are seldom considered jointly in a research framework, which imposes a challenge in terms of transferring them as direct instructions to appropriate open space planning. Sources: [7,8].…”

Section: Literature Review 21 Forms and Evaluations Of Open Space Fra...mentioning

confidence: 99%

“…Despite these benefits and strong public demand for open space supply [3], many urban open spaces are fragmenting and disappearing. The complication of urban open space structure has increased because of anthropogenic interference [4,5], whereby open space has shifted from a homogeneous, integrated, and contiguous condition to a heterogeneous, divided, and incoherent state [6][7][8]. The most complicated types of open space mosaics are characterised by morphological segregation and connectional incompatibility [9].…”

Section: Introductionmentioning

confidence: 99%

Spatial Heterogeneity Impacts of Urbanisation on Open Space Fragmentation in Hong Kong’s Built-Up Area

Yu,

Zhang,

Han

et al. 2024

Land

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Rapid urbanisation has generated numerous environmental consequences, particularly regarding open space fragmentation. Open space fragmentation is the transformation of open space from a state of homogeneity, integration, and continuity to a state of heterogeneity, division, and incoherence. Nevertheless, one main obstacle to understanding this issue is how to address the spatial heterogeneity of the impact of urbanisation on open space fragmentation. Thus, this paper provides a comprehensive framework for the mechanistic associations between open space fragmentation and urbanisation in Hong Kong’s built-up area. The results illustrate that both open space fragmentation index and urbanisation index values are noticeably higher in dense urban areas. Land urbanisation, represented by the percentage of construction land in total land, has the highest explanatory power for spatial differentiation in open space fragmentation, followed by social and population urbanisation factors. Furthermore, the relational interrelations of open space fragmentation drivers are the bivariate and nonlinear enhancement interactions. Social urbanisation and land urbanisation have the strongest bivariate enhancement interaction for the use fragmentation form and the largest nonlinear enhancement interaction for the internal fragmentation form. Based on initial urban planning, open space fragmentation is an adaptation outcome of population, land, and social urbanisation factors, and this self-organisation phenomenon has been further emphasised in the historical process. These insights significantly enrich our understanding of how urbanisation affects open space fragmentation and provide valuable guidance for better open space strategies.

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“…where MFDI is the mean value of functional diversity of UBGS in subdistrict unit i; FDI j,i is the functional diversity index of UBGS j in subdistrict unit i; N is the number of UBGS in subdistrict unit i. (3) Structural connectivity: Referring to the relevant studies by Yu et al [52], the structural connectivity indicator was measured using the mean nearest-neighbor distance index (MNNDI). MNNDI means the sum of the distances between a space and its nearest neighbors divided by the number of spaces with neighbors.…”

Section: Single Indicators Measurementmentioning

confidence: 99%

The Evolution and Driving Mechanisms of the Blue-Green Space Publicness Pattern in Changsha, China

Zhang,

Zhu

et al. 2024

Land

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Urban blue-green space (UBGS), where public life occurs, is vital for social interaction, social cohesion, public spirit cultivation, and community formation. UBGS publicness reflects whether it supports and facilitates community formation. From the perspective of the man–land relationship, UBGS with high publicness should have three significant characteristics: accessibility of elements, functional selectivity, and structural connectivity and shareability. This study took Changsha as the case study and evaluated its UBGS publicness in 2012, 2016, and 2020. We analyzed the evolution of the UBGS publicness pattern, and the results indicated the following: (1) The elements accessibility indicator showed a decreasing trend year by year and maintained the pattern of low in the city center and high in the suburban area; (2) the functional diversity indicator changed from a monocentric polarized spatial pattern to a polycentric and balanced spatial pattern; (3) the structural connectivity indicator generally improved and showed the core-edge pattern; and (4) the comprehensive indicator showed that the pattern developed from the core edge to the core edge as the primary focus with fan-shaped expansion supplemented. Based on this, combined with Changsha’s urban development history, environmental, policy, economic, and social factors supported, led, promoted, and guided the formation and evolution of the UBGS publicness pattern. This study improved the theoretical foundation of UBGS publicness, provided ideas and methods for the UBGS publicness evaluation on the urban scale, and may provide a reference for the construction of livable and sustainable cities.

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Capturing open space fragmentation in high–density cities: Towards sustainable open space planning

Cited by 19 publications

References 73 publications

Spatiotemporal Linkages between Administrative Division Adjustment and Urban Form: Political Drivers of the Urban Polycentric Structure

Spatiotemporal Linkages between Administrative Division Adjustment and Urban Form: Political Drivers of the Urban Polycentric Structure

Spatial Heterogeneity Impacts of Urbanisation on Open Space Fragmentation in Hong Kong’s Built-Up Area

The Evolution and Driving Mechanisms of the Blue-Green Space Publicness Pattern in Changsha, China

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