Abstract:

Under the background of rapid social and economic development in our country, the continuous progress of urbanization has led to the decrease of urban ecological patches, the ecological and environmental problems are increasing year by year. The construction of ecological networks can link the original ecological patches to improve the urban ecological environment with the service function of one of the effective ways. Based on the MSPA and the landscape index method, the ecological source of the ecological network is extracted and the comprehensive resistance surface is constructed based on the MCR model. The minimum cost path method was applied to generate potential corridors, and then based on the gravity model, the degree of intermediary center and other key corridors and stepping stone plaque was identified and extracted to build the potential ecological network of the study area. The results showed that the MSPA method can be combined with the MCR, and the potential ecological corridor of the study area can be identified by quantitative analysis, and the stepping stone patches are selected according to the mediating effect of patches. The protection of landscape elements in the study area is clear. The potential ecological source and corridor in the landscape as the main basis for the construction of ecological network can provide scientific guidance for the construction of ecological network in Yujiang County, and also provide reference for other regions.

Key words：MSPA; MCR; ecological networks; landscape connectivity; Yujiang county