摘要
通过构建城市韧性"成本-能力-能效"的评估模型,综合运用熵值法、主成分分析法、SBM模型、探索性空间数据分析和K-means聚类方法,对长江经济带126个城市的韧性进行综合定量评估,归纳总结城市韧性模式和聚类特征,并运用GWR模型分析影响韧性能力的成本因素,探究韧性效率的驱动机制。研究表明:(1)分维度来看,核心城市呈现韧性成本和韧性能力的"双高",韧性效率则由非核心城市引领。从均衡的角度来看,韧性成本、韧性能效具有明显的水平层级性,而韧性能力在城市间的分野相对不大。(2)综合来看,韧性成本和韧性能力随城市规模的扩张而逐渐增加,而韧性效率逐渐衰减;韧性模式具有明显的上中下游区际差异性:上游地区表现为"低耗低能高效",中游地区"低耗低能中效",下游地区为"高耗高能低效";韧性的空间联系兼有核心城市垂直极化和一般城市扁平抱团。(3)从机制看,全社会用电量、建成区面积和科技支出是影响城市韧性能力的主要成本因素,不同韧性模式的城市具有差异化的主控因素。研究对于完善城市韧性评价体系、丰富城市韧性评估视角和推动城市韧性建设具有重要的现实意义。
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.
作者
彭翀
林樱子
吴宇彤
彭仲仁
PENG Chong;LIN Ying-zi;WU Yu-tong;PENG Zhong-ren(School of Architecture and Urban Planning,Huazhong University of Science and Technology,Urbanization Engineering Technology Research Center of Hubei Province,Wuhan 430074,China;School of Architecture,Tsinghua University,Gainesville FL32611,America)
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2021年第8期1795-1808,共14页
Resources and Environment in the Yangtze Basin
基金
国家自然科学基金面上项目(51778253)
华中科技大学文科重大及交叉培育项目(2019WKZDJC010)。
关键词
长江经济带
韧性评估
韧性成本
韧性能力
韧性能效
聚类特征
Yangtze River Economic Zone
resilience evaluation
resilience cost
resilience ability
resilience efficiency
clustering characteristics
