Evolution Characteristics of the Ecological Space Network of Resource-Based Cities: A Case Study on Xuzhou

The territorial and spatial planning is an essential tool for ecological civilization construction in spatial development and urban governance. Since ecological space has been an important part of the territorial and spatial planning, this study established a spatial structural pattern of "ecological source-ecological corridor-ecological node" along with methods including landscape connectivity analysis and ecological resistance surface analysis. Taking the ecological space of Xuzhou City, a typical resource-based city, as a case study, this research analyzed the ecological spatial network structure and evaluated the evolution characteristics before judging the breadth threshold value of the ecological corridor and providing planning control strategy. The study found that since the urbanization of Xuzhou City resumed its growth, the quantity of ecological sources, corridors, and nodes have grown along. The resistance of the ecological corridor increases year by year, with the proper breadth threshold value around 100 – 200 m. The development of an ecological network structure shows a single-polarization evolution characteristic that is high quality and high resistance.