RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2021, Vol. 30 >> Issue (8): 1795-1808.doi: 10.11870/cjlyzyyhj202108002

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Urban Resilience Evaluation of the Yangtze River Economic Belt Based on “Cost-Capacity-Efficiency”

PENG Chong 1,LIN Ying-zi 1,WU Yu-tong 1,PENG Zhong-ren 2   

  1. (1. School of Architecture and Urban Planning, Huazhong University of Science and Technology, Urbanization Engineering Technology Research Center of Hubei Province, Wuhan 430074, China;2. School of Architecture, Tsinghua University, Gainesville FL32611, America)
  • Online:2021-08-20 Published:2021-09-06

Abstract: This paper constructs a “cost-capacity-energy efficiency” evaluation model for urban resilience, comprehensively using entropy method, principal component analysis method, SBM model, ESDA,K-means clustering method and GWR evaluate the resilience of 126 cities in the Yangtze River Economic Zone. The results show that: (1) Core cities show the “double high” of resilience cost and resilience capacity, while resilience efficiency is led by non-core cities. From the perspective of equilibrium, resilience cost and resilience efficiency have obvious horizontal hierarchy, while resilience capacity is relatively small among cities. (2) Based on the resilience cost, capacity, and efficiency index of each city, the resilience model can be classified into five categories and exhibit the following clustering characteristics: In terms of resilience level, cost and capacity gradually increase with the expansion of city size, but the efficiency gradually declines. The resilience model has obvious interregional differences between upstream, middle, and downstream. The upstream area is characterized by “low consumption, low capacity and high efficiency”, the middle reaches are “low consumption, low capacity, and medium efficiency”, and the downstream area is “high consumption, high capacity, and low efficiency”. In terms of resilience correlation, it has the dual interaction of vertical polarization in core cities and flat cohesion in general cities. (3) From the perspective of mechanism, the power consumption of the whole society, the area of built-up areas, and the expenditure on science and technology are the main cost factors that affect the resilience of cities. Cities with different resilience modes have different main control factors. The research has important practical significance for improving the urban resilience evaluation system, enriching the perspective of urban resilience evaluation, and promoting urban resilience construction.

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