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To Preserve Green Buffer under Polarization and Diffusion Effects of a Fast-Developing Megalopolis

Author

Listed:
  • Xiaohong Li

    (Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 401122, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Jiuhong Zhang

    (Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 401122, China)

  • Jinxia Huang

    (Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 401122, China)

  • Wenhao Lin

    (Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 401122, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Shengjun Wu

    (Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 401122, China)

  • Maohua Ma

    (Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 401122, China)

Abstract

The polarization and diffusion effects of landscape patterns are important features of megalopolis development. Under the urbanized effects, green space is a key spatial unit in delivering vital ecosystem services for sustainable urban planning. However, currently, fast urban developing is swamping the green space. In this study, by tracing landscape pattern changes of a fast-developing megalopolis, the Chengdu-Chongqing Megalopolis in the southeast of China, and using land-use data from 1980 to 2020, we aimed to determine the polarization and diffusion effects of the megalopolis and their impacts on the green space within and between the cities. We found that: (1) during the past four decades, spatial expansion of the megalopolis mainly occupied grassland and farmland, triggering an increase in landscape fragmentation; (2) based on socio-economic indicators, the spatial-attraction network analysis showed a significant polarization effect; however, based on the natural landscape, this analysis demonstrated a more scattered pattern; (3) importantly, the megalopolis developed at quite a similar pace, which caused the green rural area between the central cities demonstrating an encroached trend by the urbanization. To promote sustainability of the fast-developing megalopolis, we suggest that the boundary of the green space should be broadened to form a green network in which natural green space and urban green space are interconnected, improving the connectivity of habitats within the megalopolis for urban biodiversity. Our study implied that maintaining the green buffer shall be considered in advance for sustainable megaregional planning and establishing resilience of the fast-developing megalopolis.

Suggested Citation

  • Xiaohong Li & Jiuhong Zhang & Jinxia Huang & Wenhao Lin & Shengjun Wu & Maohua Ma, 2022. "To Preserve Green Buffer under Polarization and Diffusion Effects of a Fast-Developing Megalopolis," Land, MDPI, vol. 11(5), pages 1-20, May.
    • Handle: RePEc:gam:jlands:v:11:y:2022:i:5:p:724-:d:813346
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    References listed on IDEAS

    as
    1. Kong, Xuesong & Fu, Mengxue & Zhao, Xiang & Wang, Jing & Jiang, Ping, 2022. "Ecological effects of land-use change on two sides of the Hu Huanyong Line in China," Land Use Policy, Elsevier, vol. 113(C).
    2. John Friedmann & André Sorensen, 2019. "City unbound: emerging mega-conurbations in Asia," International Planning Studies, Taylor & Francis Journals, vol. 24(1), pages 1-12, January.
    3. Bo Liu & Libo Pan & Yue Qi & Xiao Guan & Junsheng Li, 2021. "Land Use and Land Cover Change in the Yellow River Basin from 1980 to 2015 and Its Impact on the Ecosystem Services," Land, MDPI, vol. 10(10), pages 1-23, October.
    4. Walter Musakwa & Adriaan Niekerk, 2015. "Monitoring sustainable urban development using built-up area indicators: a case study of Stellenbosch, South Africa," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 17(3), pages 547-566, June.
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    1. Xiaoyu Guo & Minghao Guan & Zhenxing Bian & Qiubing Wang, 2022. "A Quantitative Survey of Effect of Semi-Natural Habitat Composition and Configuration on Landscape Heterogeneity in Arable Land System," Land, MDPI, vol. 11(7), pages 1-16, July.

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