Abstract: Analyzing the supply and demand of ecosystem services is crucial for integrated ecosystem management and achieving regional sustainable development. Using the InVEST model, we quantified the supply and demand of seven ecosystem services of Qilian Mountain National Park, including food provision, water conservation, soil conservation, carbon sequestration, climate regulation, habitat quality, and recreation and leisure. We further analyzed the supply and demand characteristics and spatial matching patterns by combining with the supply-demand ratio and the local Moran’s index. The results showed that the overall supply-demand ratio for Qilian Mountain National Park was 0.0608. Except for carbon sequestration and recreation and leisure services, the supply of the other five services exceeds demand. However, there were significant spatial variations across regions and services. The spatial matching between supply and demand could be categorized into four types, including high-high match, low-low match, low-high mismatch, and high-low mismatch. Tianzhu County and Sunan County were classified into the low supply-high demand category, while Shandan County, Minle County, and Liangzhou District were classified as high supply-low demand areas. High-low spatial mismatch areas within the Qilian Mountain National Park should be protected and the management level should be improved, while the low-high spatial mismatch areas should be comprehensively improved to enhance land-use efficiency.

Key words: Qilian Mountain National Park, ecosystem services, supply and demand relationship, spatial match