快速城镇化区域城市韧性时空演变及障碍因子诊断——以长江中游城市群为例

运用综合评价法、障碍度模型等方法揭示近10年长江中游城市群城市韧性的时空演变格局与阻碍该地区城市韧性提升的障碍因子。结果表明:长江中游城市群城市韧性呈现出显著的区域不平衡不协调现象,主要表现为中部高四周低的空间分布格局,其中环长株潭城市群一直处于较高水平,而武汉城市圈则最低;城市群城市韧性的总体差异在逐渐扩大,且主要表现为区域内各地市的差异;从整体上看,城市群城市韧性各阶段的变化较为显著,经历了"中高水平集聚""中低水平分散",最后演变为"中等水平聚集";阻碍长江中游城市群城市韧性提升的障碍因子由经济-基础设施方面逐渐过渡到了基础设施-社会-生态方面。

Spatio-temporal Evolution of Urban Resilience and Diagnosis of Obstacle Indicators in Rapidly Urbanized Regions:A Case Study of the Urban Agglomerations in the Middle Reaches of the Yangtze River

The comprehensive evaluation method,obstacle degree model and other methods are used to reveal the spatial and temporal evolution pattern of urban resilience in the middle reaches of the Yangtze River in the past 10 years and the obstacle factors that have hindered the improvement of urban resilience in the region.The results show that the urban resilience of the urban agglomeration in the middle reaches of the Yangtze River shows a significant regional imbalance and uncoordinated phenomenon,which is mainly represented by the spatial distribution pattern of high and low in the middle of the city.The overall difference in urban resilience in urban agglomerations is gradually expanding,and it is mainly manifested in the differences between local cities at the regional level;on the whole,the changes in urban resilience in each stage of urban agglomerations are more significant,and they have experienced "medium to high level agglomeration".The "low-level dispersion" finally evolved into "medium-level aggregation",and the obstacle factors that hindered the improvement of urban resilience in the middle reaches of the Yangtze River gradually shifted from economic-infrastructure to infrastructure-social-ecological aspects.