基于MSPA与MCR模型的余江县生态网络构建基于MSPA与MCR模型的余江县生态网络构建

在我国社会经济快速发展的背景下，城市化进程的不断推进导致城市生态斑块日益减少，生态环境问题正在逐年增加，构建生态网络是改善城市生态环境与服务功能的有效方法之一。以余江县为研究区，采用形态学空间格局分析(MSPA)方法和景观指数法，提取对生态网络具有重要意义的生态源地，并基于MCR模型构建综合阻力面，采用最小成本路径方法生成潜在廊道，再基于重力模型、中介中心度等对关键廊道及踏脚石斑块进行识别并提取，从而构建研究区潜在生态网络。结果表明：MSPA方法能够与MCR模型有机的结合，通过定量的分析识别出研究区潜在生态廊道，并根据斑块的中介作用选定踏脚石斑块，明确研究区景观要素的保护优先度，将景观中的潜在生态源地及廊道作为生态网络构建的主要依据，能够更加科学地为余江县生态网络的构建提供指导，同时也可为其他区域提供参考。

DEVELOPING ECOLOGICAL NETWORKS BASED ON MSPA AND MCR: A CASE STUDY IN YUJIANG COUNTY

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.