[Impact and Pathways of Environmental Risks on Urban Resilience in Xi'an]

Constructing cities that could respond quickly to multiple environmental risks and are resilient is of great significance to regional sustainable development. Based on the construction of a framework for assessing environmental risk and urban resilience， the spatiotemporal heterogeneity of environmental risk and urban resilience in Xi'an from 2010 to 2020 was analyzed by using the AHP-entropy weight method， and the spatiotemporal relationship between environmental risk and urban resilience was analyzed using bivariate spatial autocorrelation and geographically weighted regression models. Finally， mediation effect modeling was used to investigate the pathways through which environmental risk affects urban resilience. The results showed that：① From 2010 to 2020， the environmental risk level in Xi'an fluctuated， spatially characterized by a distribution pattern in which the highest levels were in the central areas， followed by the outer regions， with the lowest levels at the edges， and a distinct "central-peripheral" feature. During the same period， the resilience level of Xi'an increased year by year， exhibiting a patchy spatial distribution pattern with a south-high， north-low gradient. ② From 2010 to 2020， there was an overall positive spatial correlation between environmental risk and urban resilience in Xi'an with the positive effect increasing. The areas where environmental risk had a positive correlation with urban resilience and those with a negative correlation formed a clear "core-periphery" dichotomy， with the positive impact continuing to expand. ③ Environmental risk had both direct and indirect impacts on urban resilience， with three indirect impact paths identified： overall consumption capacity， transportation infrastructure， and population mobility， and there was a tendency for path types to be homogenized.