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<p>Pocket parks are increasingly recognized as key components of micro-scale green infrastructure in dense urban environments, but assessments of spatial equity still rely mainly on single-dimensional metrics of accessibility. This study develops a multidimensional, scale-sensitive framework (3D–3S) that integrates walkability (WA), spatial vitality (SV), and landscape connectivity (LC) to evaluate pocket-park service potential. Recognizing that proximity-based use varies with walking distance, the framework is applied across three service-based walking catchments of 5, 10, and 15&#xa0;min in central Chengdu, China. A multiscale quantitative evaluation combines multi-source spatial data, weighted indicators, cluster analysis, and spatial regression to construct a Service Potential Index (SPI) for 256 pocket parks. Results reveal clear scale-dependent differences: WA shows pronounced scale sensitivity, SV displays moderate but heterogeneous variation, and LC remains largely stable across distances. Cluster analysis identifies three service types, reflecting distinct spatial performance and functional roles. Spatial regression shows a significant positive association between population density and service potential at all scales, while housing price has no significant relationship. Overall, the study demonstrates the value of assessing pocket parks through multidimensional and scale-sensitive opportunity structures rather than relying solely on proximity-based measures. The 3D–3S framework offers a transferable analytical approach for recognizing pattern differentiation, supporting more equitable resource distribution, and guiding micro-scale green infrastructure planning in compact urban environments.</p>

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Assessing spatial equity by balancing accessibility, vitality, and connectivity of pocket parks in a high-density city

  • 期刊论文

  • 发表日期：

    2026年3月30日

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  • Yilin Chen,
  • Yongmei Cao,
  • Bowen Zeng,
  • Lingli Peng,
  • Yinghui Huang,
  • Saixin Cao,
  • Dongpu Lin,
  • Yike Wang,
  • Kai Li,
  • Xi Li

摘要

Pocket parks are increasingly recognized as key components of micro-scale green infrastructure in dense urban environments, but assessments of spatial equity still rely mainly on single-dimensional metrics of accessibility. This study develops a multidimensional, scale-sensitive framework (3D–3S) that integrates walkability (WA), spatial vitality (SV), and landscape connectivity (LC) to evaluate pocket-park service potential. Recognizing that proximity-based use varies with walking distance, the framework is applied across three service-based walking catchments of 5, 10, and 15 min in central Chengdu, China. A multiscale quantitative evaluation combines multi-source spatial data, weighted indicators, cluster analysis, and spatial regression to construct a Service Potential Index (SPI) for 256 pocket parks. Results reveal clear scale-dependent differences: WA shows pronounced scale sensitivity, SV displays moderate but heterogeneous variation, and LC remains largely stable across distances. Cluster analysis identifies three service types, reflecting distinct spatial performance and functional roles. Spatial regression shows a significant positive association between population density and service potential at all scales, while housing price has no significant relationship. Overall, the study demonstrates the value of assessing pocket parks through multidimensional and scale-sensitive opportunity structures rather than relying solely on proximity-based measures. The 3D–3S framework offers a transferable analytical approach for recognizing pattern differentiation, supporting more equitable resource distribution, and guiding micro-scale green infrastructure planning in compact urban environments.