Optimization of ecological connectivity and construction of supply-demand network in Wuhan Metropolitan Area, China

Optimizing the ecological connectivity and constructing the ecological supply and demand network are of great significance for maintaining the stability of ecosystem and human well-being. Considering the interaction between ecological process and supply-demand of ecosystem services, we simulate ecological processes by identifying ecological supply and demand corridors, and then connecting the supply and demand of ES, which further enrich and expand the traditional ecological network analysis framework. And take Wuhan metropolitan area of China as an example to conduct empirical research. From the supply side, we identify the regional ecological source based on the evaluation of the importance of ES and the structural connectivity analysis of ecological lands, and according to the spatial distribution characteristics of ecological land, the connectivity network is optimized by adding stepping-stone to improve resilience of the connectivity network. From the demand side, we construct the ecological demand network by identifying the demand area of ES, and build a long-distance spatial channel to improve the ability of the ecosystem to meet human needs. This empirical research could provide important reference for ecological restoration planning and territorial spatial planning.