基于“服务重要性-生态敏感性-生物多样性”的内蒙古生态网络识别及优化

he identification of ecological spatial quality and the construction of regional conservation networks are of great significance for optimizing habitat layout, improving ecological carrying capacity, and maintaining ecosystem stability. Taking the Inner Mongolia Autonomous Region as an example, the study constructed a conservation network identification framework of "service importance-habitat sensitivity-biodiversity", and identified ecological source areas based on the evaluation of ecosystem service importance and habitat sensitivity. Based on this, the study coupled with the existing nature reserve system, utilized the Least Cumulative Resistance model to identify important ecological corridors and constructed a conservation network in Inner Mongolia Autonomous Region. The ecological stepping stones and ecological obstacle points to be optimized were extracted by analyzing the spatial superposition relationship between ecological corridors and infrastructure. The results show that: (1) the area of Class I ecological source sites in Inner Mongolia Autonomous Region is 3.80104 km2, accounting for 1.54% of the total area of the study area, with a high degree of overlap with the red line of ecological protection; (2) a total of 84 potential ecological corridors are identified based on nature reserves and Class I ecological source sites, with a total length of about 15910 km, and a combination of ecological source sites, potential corridors and bird migratory corridors is used to construct the Inner Mongolia conservation network; (3) identified 5 bird migration corridors, 10 stepping-stone quality habitat construction sites and 81 ecological barrier repair sites. The results of the study provide data support and location reference for the management and construction of species migration and energy flow networks in ecological protection and restoration projects in the Inner Mongolia Autonomous Region.