基于韧性理论的长株潭“3 + 5”城市群城市韧性时空演变特征研究
Study on Temporal and Spatial Evolution Characteristics of Urban Resilience of the Chang-Zhu-Tan “3 + 5” Urban Agglomeration Based on the Resilience Theory

随着城市面临的社会风险日益复杂化和多元化，增强城市抵御风险的能力逐渐受到国家和社会的高度重视。为更好地增强城市抵抗不确定风险的能力，本文以长株潭“3 + 5”城市群为研究对象，基于熵值法和耦合协调度模型，从“抵抗–适应–恢复”3维度构建城市韧性评价指标体系，对2013~2022年长株潭“3 + 5”城市群的韧性水平进行综合韧性、分维度韧性评价，研究各市城市韧性的时空演进变化。结果表明：(1) 时间维度上，“3 + 5”城市群的韧性发展总体态势良好，但仍存在个体之间发展不充分、不均衡的问题。(2)“3 + 5”城市群各城市韧性的耦合协调度有所上升，集聚效应增强，但总体水平较低。(3) 空间维度上，空间分布不均衡，总体呈现以长沙市为中心向周围递减格局。
With the increasing complexity and diversification of social risks faced by cities, the country and society gradually attach great importance to enhancing the ability of cities to resist risks. In order to better enhance the ability of cities to resist uncertain risks, this paper takes Chang-Zhu-Tan “3 + 5” urban agglomeration as the research object, builds an urban resilience evaluation index system from the three dimensions of “resistance - adaptation - recovery” based on entropy method and coupling coordination degree model. To evaluate the comprehensive resilience and sub-dimensional resilience of the “3 + 5” urban agglomeration from 2013 to 2022, and to study the temporal and spatial evolution of urban resilience of each city. The results show that: (1) From the time dimension, the resilience development of “3 + 5” urban agglomeration is generally good, but there are still problems of insufficient and unbalanced development among individuals. (2) The coupling coordination degree of urban resilience in “3 + 5” urban agglomerations has increased, and the agglomeration effect has been enhanced, but the overall level is low. (3) In terms of spatial dimension, the spatial division is uneven, and the overall pattern is decreasing from Changsha City to the surrounding area.