Construction and Optimization of Ecological Network in Beipan River Basin,Guizhou Province
Resource development and social development have exacerbated the regional ecological crisis,and constructing ecological networks is an essential scientific basis for maintaining regional ecological security.The eco-logical network of the Beipan River Basin in Guizhou was constructed.Optimization strategies were proposed as fol-lows:thirty-two core source sites were identified by MSPA and screened and graded for importance by combining the importance of the patches with the evaluation index of the degree of connectivity;ecological corridors and eco-logical nodes were extracted from the study area by using the LM tool,which resulted in a total of 76 ecological cor-ridors and 99 ecological nodes,and the corridors and nodes were graded based on the gravity model.Nodes in the study area,resulting in a total of 76 ecological corridors and 99 ecological nodes,and grading the corridors and nodes based on the gravity model to construct the ecological network of the Beipan River Basin in Guizhou;based on the construction of the ecological network in the Beipan River Basin,we clarify the critical areas for the protec-tion and restoration of the ecological security of the Beipan River and put forward the ecological governance and op-timization strategy of'three districts,two corridors,and multiple points,'which provide a reference for the ecologi-cal restoration and ecological security pattern construction of Beipan River Basin in Guizhou.
ecological networkmorphological spatial pattern analysis(MSPA)minimum cumulative resist-ance(MCR)Linkage Mapper(LM)Beipan River Basin
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