Acta Geographica Sinica ›› 2021, Vol. 76 ›› Issue (4): 973-991.doi: 10.11821/dlxb202104013

• Geographical Relationship and Regional Development • Previous Articles     Next Articles

Coupling relationship between urbanization and ecological resilience in the Pearl River Delta

WANG Shaojian(), CUI Zitian, LIN Jingjie, XIE Jinyan, SU Kun   

  1. Guangdong Provincial Key Laboratory of Urbanization and Geo-simulation, School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2020-03-01 Revised:2020-12-18 Online:2021-04-25 Published:2021-06-25
  • Supported by:
    Fundamental Research Funds for the Central Universities(191gzd09);Guangdong Special Support Program;Pearl River S&T Nova Program of Guangzhou(201806 010187)

Abstract:

Urban resilience is an emerging research topic of urban studies, and its essence is the ability of cities to resist, recover and adapt to uncertain disturbances. This paper first constructs a "Size-Density-Morphology" urban ecological resilience evaluation system, and then uses the coupling coordination degree model to measure the degree of coupling coordination between urbanization and ecological resilience in the Pearl River Delta from 2000 to 2015, and conducts an in-depth discussion on its temporal and spatial characteristics. The results show that: (1) From 2000 to 2015, the urbanization level of cities in the study area generally increased while the level of ecological resilience declined. The coupling coordination degree between the two systems decreased from basic coordination to basic imbalance. (2) In terms of spatial distribution, the coupling coordination degree between ecological resilience and urbanization of cities presented a circle pattern that centered on the cities at the mouth of the Pearl River and increased toward the periphery. (3) Ecological resilience subsystems played different roles in the coupling coordination between urbanization and ecological resilience. Specifically, size resilience mainly played a reverse blocking role; the influence of morphological resilience was mainly positive and continued to increase over time; the effect of density resilience was positive and continued to decline and further became negative after falling below zero. Leading the coordinated development of regions with new urbanization, and improving ecological resilience by strictly observing the three areas and three lines, adapting to ecological carrying capacity, and rationally arranging urban green spaces, are the main path for achieving coordinated and sustainable development of urbanization and ecological resilience in the Pearl River Delta in the future.

Key words: urbanization, ecological resilience, size resilience, density resilience, morphological resilience, coupling coordination model, Pearl River Delta