关键词: 生态源地, MCR模型, 阻力面, 生态廊道, 生态节点, 生态修复

Abstract: Building an ecological spatial regulation network is of great significance for maintaining the basic foundation of ecological space. This article takes Jingtai county in Gansu province as an example, uses the ecosystem service value assessment model and ecological environment sensitivity assessment model to identify ecological source areas. By using the minimum cumulative resistance model (MCR) and gravity model, resistance surfaces are established, ecological corridors and nodes are extracted, and an ecological spatial regulation network is constructed. The results indicate that the 21 ecological source areas in the study area exhibit a spatial distribution pattern of uniform distribution around the area and scattered sparsity in the middle, with a total of 41 ecological corridors and 43 ecological nodes identified. Based on the different geographical characteristics and land types of key areas, two types of restoration strategies are proposed: natural protection as the main focus, artificial restoration as a supplement, and equal emphasis on both artificial restoration and natural protection. The research results are used to identify ecological restoration areas and construct regional ecological spatial regulation networks.

Key words: ecological source, MCR model, resistance surface, ecological corridor, ecological nodes, ecological restoration