Spatial And Temporal Distribution Of Urban Ecological Resilience In Emerging Urban Agglomerations

As the urban scale of emerging urban agglomerations continues to expand,the rate of resource consumption has accelerated,and environmental problems such as soil erosion,soil pollution and air pollution are becoming increasingly prominent.These problems are hindering the high-quality development of the emerging urban agglomerations,and are also causing the cities to face the urgent task of ecological restoration.The Chengdu-Chongqing twin-city economic zone is a typical emerging urban agglomeration,with the largest population in the emerging urban agglomeration.The urbanisation process of the urban agglomeration is accelerating,the population flow is multiplying,economic construction is accelerating and the rate of resource consumption is soaring,and serious ecological problems are undermining ecological security and hindering the healthy development of the urban agglomeration.Urban ecological resilience,as a city’s ability to respond and recover from unexpected events,measures the ecological resilience of cities in the Chengdu-Chongqing twin-city economic zone to enable them to accelerate the process of building ecological safety while developing rapidly and to promote high-quality and sustainable development.In this paper,the Drive-Pressure-State-Impact-Response(DPSIR)model is used to construct an index system for evaluating the ecological resilience of cities in the ChengduChongqing twocities economic zone,calculate the ecological resilience level measures of its16 cities,and conduct spatial evolution analysis.Then,the Dagum Gini coefficient is used to describe the spatial variation of urban ecological resilience,and the Geo Detector model is used to extract the main influencing factors for the spatial and temporal variation of urban ecological resilience,such as resources,disasters and industrial development factors.Finally,policy recommendations are proposed to improve the ecological resilience of the ChengduChongqing twin-city economic circle.The results of the study show that the urban ecological resilience of the Chengdu-Chongqing twin-city economic zone shows a wave-shaped increase from 2011 to 2020,and the rate of increase is slow.In addition,the urban ecological resilience shows an uneven development trend between regions,but the unevenness is gradually reduced with economic and social development.