Abstract:
Objectives Land use change is one of the main factors affecting ecosystem service function change, and the exploration of the dynamic relationship between these two factors is of significant scientific importance for the optimization of the spatial layout of the giant panda nature reserve and the enhancement of ecological construction and protection.
Methods In this study, the giant panda natural reserve in Sichuan (Minshan Mountain, Qionglai Mountain, Dxiangling Mountain, Xiaoxiangling Mountain and Liangshan Mountain system) was selected as a case study. Based on the land use data from five periods between 2000 to 2020, land use transfer matrix was used to analyze the change process of land use type. Dynamic characteristics of ecosystem service functions (i.e., habitat quality, carbon storage, soil conservation and water yield) during 2000−2020 were quantitatively analyzed using InVEST model.
Results The results showed that: (1) A minimal alteration in land use was observed from 2000 to 2020, predominantly forests, grasslands, and farmlands, but with continuous increase in impervious surfaces, primarily encroaching on farmlands, forests, and wetlands. (2) From 2000 to 2020, the carbon storage, soil retention, and water yield functions were generally increased, whereas habitat quality slightly decreased, indicating the ecosystem still faces pressures from urbanization, deforestation, and increased human activities. (3) Habitat quality, carbon storage, and soil retention showed higher values in central areas and lower values in surrounding areas, while water yield exhibited a spatial distribution characterized by a low value in the southeast and a high value in the northwest.
Conclusions This study emphasized the importance of dynamic monitoring of ecosystem service functions in protected areas by integrating land use data and ecological models, which provided a foundation for establishing the ecological protection and construction objectives of protected areas and also served as a crucial reference for the spatial assessment of ecosystem services in other protected areas.
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