"四生空间"视角下长江经济带城市人居环境韧性的时空演变及驱动机制OACHSSCD

Enhancing urban human settlement resilience is an important measure for consolidating the ecological security barrier of the Yangtze River Economic Belt and activating the endogenous driving force of high-quality development.Integrating spatial production theory with evolutionary resilience theory,this study constructs a research framework for urban human settlement resilience from the perspective of the"four spaces"of living,ecology,production and life.Through the comprehensive application of methods such as the spatial variogram and random forest model,it reveals the spatiotemporal evolution characteristics and driving mechanisms of urban human settlement resilience in 108 prefecture-level and above cities in the Yangtze River Economic Belt from 2011 to 2023.The results show the following.(1)The urban human settlement resilience index of the Yangtze River Economic Belt increased from 0.183 in 2011 to 0.653 in 2023,with an average annual growth rate of 10.268%.The main types of urban human settlement resilience achieved a continuous evolution from low resilience to medium-high resilience,indicating an overall upward process during the study period.(2)Urban human settlement resilience in the Yangtze River Economic Belt exhibited,in spatial terms,a gradient feature of"higher in the east and lower in the west,higher in the north and lower in the south".The high-value areas diffused from the Yangtze River Delta towards core cities in the middle and upper reaches of the Yangtze River,and formed a polycentric-radial structure,but regional imbalance still existed.(3)During the study period,the evolution of urban human settlement resilience in the Yangtze River Economic Belt was comprehensively affected by factors including economic development,urban construction,the natural environment and policy support.Among these factors,economic foundation,resident consumption level,vegetation coverage and infrastructure development exert positive driving effects on urban human settlement resilience.Transportation construction and fiscal investment exhibit an inverted U-shaped correlation with resilience values.The impact of urban development demonstrates fluctuating characteristics over the research period,while climatic conditions only exert favorable effects within an appropriate range.Therefore,it is necessary to take the construction goals of urban human settlement resilience as the basic orientation,rely on multi-party linkage to implement collaborative governance,and coordinate the advancement of urban modernization construction with the improvement of human settlement quality,thereby ensuring that urban modernization construction and human settlement quality improvement are promoted in a coordinated manner under the objective of enhancing urban human settlement resilience in the Yangtze River Economic Belt within the same regional research scope.