YUAN Hai-wei, NI jie, QIU Ni, LIN Gang-te, WANG Shi-kuan, GUO Ming-bin, GONG Jian-zhou
Journal of Guangzhou University(Natural Science Edition). 2025, 24(1): 66-81.
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The establishment and optimization of ecological networks in strategic locations is a useful strategy to enhance the connection of regional landscape structures and the general functioning of ecosystems, taking into account the spatial distribution and connectivity of ecosystem service values. There isn't enough research being done in this field right now. The study used land use data from 2000 to 2020 to determine the future ecosystem service value of the Nanling Mountains region, identify high-value locations, and maximize the value of the ecosystem network. It was based on the PLUS-InVEST model and the “source-corridor” paradigm. The ecological network in the Nanling Mountains region was established and optimized by identifying high value locations, and the future value of ecosystem services in the Nanling Mountains region was computed using land use data from 2000 to 2020. The findings indicate that: The typical ecosystem service value of the region exhibits a general fluctuating and decreasing trend, with the lowest value predicted for 2030;the landscape composition is relatively stable within the total area of about 114 000 km2 of the Nanling Mountains area, with woodland as the dominant type;with the ecological source area in a regulated distribution and more fragmented edges, the ecological network of the Nanling Mountains region exhibits a spatial distribution that is dense in the west and sparse in the east. The study elucidates the critical domains for ecological network optimization, derived from the goal of giving priority to the preservation of ecological pinch points and emphasizing the rehabilitation of ecological barrier points. The study's findings offer evidence in favor of enhancing the ecosystem service network's spatial structure and creating a pattern of long-term ecological security.