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Identification of Ecological Priority Areas Based on Nested-Scale Analysis: A Case Study of Metropolitan Nanjing, China

Author

Listed:
  • Yuxi Zhu

    (School of Architecture, Southeast University, Nanjing 210096, China)

  • Jianqiang Yang

    (School of Architecture, Southeast University, Nanjing 210096, China)

  • Le Zhu

    (School of Architecture, Chang’an University, Xi’an 710064, China)

  • Liping Sun

    (School of Architecture, Southeast University, Nanjing 210096, China)

Abstract

Rapid urbanization has led to severe fragmentation of ecological spaces in high-density metropolitan regions, threatening urban ecological security and environmental well-being. While cities explore various restoration strategies, the systematic identification of ecological priority areas remains an urgent challenge, particularly due to the limitations of multi-scale evaluation methods. This study develops an integrated nested-scale analytical approach to examine ecological elements at metropolitan and central urban levels, using Metropolitan Nanjing as a case study. The framework combines Morphological Spatial Pattern Analysis (MSPA), Landscape Connectivity Analysis, and INVEST Habitat Quality Assessment to identify ecological sources while employing a multi-dimensional ecological resistance evaluation system and Circuit Theory Model for critical node assessment. The findings reveal a notable spatial overlap between ecological pinch points and barrier points across scales, demonstrating the importance of nested-scale coupling in maintaining network stability. Through this analysis, 3297 ecological priority areas are identified and classified into three hierarchical categories, offering a practical framework for optimizing ecological networks in high-density metropolitan regions.

Suggested Citation

  • Yuxi Zhu & Jianqiang Yang & Le Zhu & Liping Sun, 2024. "Identification of Ecological Priority Areas Based on Nested-Scale Analysis: A Case Study of Metropolitan Nanjing, China," Land, MDPI, vol. 14(1), pages 1-21, December.
    • Handle: RePEc:gam:jlands:v:14:y:2024:i:1:p:60-:d:1557920
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    References listed on IDEAS

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