干旱区研究2025，Vol.42Issue(6)：1103-1113,11.DOI:10.13866/j.azr.2025.06.13
基于MSPA-InVEST模型的陇南市生态安全格局时空演变
Spatiotemporal evolution of the ecological security pattern in Longnan City based on the MSPA-InVEST model
摘要
Abstract
Accurate identification for ecological restoration is essential for promoting sustainable ecological de-velopment.Longnan City,as a crucial water source conservation area and ecological security barrier in the upper reaches of the Yangtze River,plays a critical role in maintaining the regional ecological balance.This study used the InVEST model to evaluate ecosystem services and combined the morphological spatial pattern analysis(MS-PA)method with circuit theory to construct the ecological security pattern of Longnan City,then analyze its evo-lution.The results showed:(1)From 2000 to 2022,the number of ecological source areas increased,primarily dis-tributed in the Kang County,Hui County,and Cheng County.The spatial distribution exhibited a pattern of higher density in the south and lower in the north.(2)The average resistance value first decreased then increased,while the length of ecological corridors initially increased and later decreased,during the study period with a net reduc-tion of approximately 508.94 km.Spatially,the corridors shifted from central to southeastern regions.(3)Ecologi-cal bottleneck areas,primarily dominated by forests,croplands,and grasslands,were concentrated in low-resis-tance zones.Their total area decreased annually,with a net reduction of about 144.84 km2 over the study period.Ecological obstacles also decreased in both number and area,mainly clustered in Wudu County,Li County,and Tanchang District.Thus,the research results provide a scientific foundation for the formulation of ecological res-toration plans and promotion of high-quality regional economic development in Longnan City.The findings pro-vide scientific support for formulating ecological restoration plans and promoting high-quality economic develop-ment in Longnan City.关键词
生态系统服务/生态安全格局/InVEST模型/MSPA方法/陇南市Key words
ecosystem service/ecological security pattern/InVEST model/MSPA method/Longnan City引用本文复制引用
李治明,张国飞,邢捷,杨磊,王卫东,曹娟..基于MSPA-InVEST模型的陇南市生态安全格局时空演变[J].干旱区研究,2025,42(6):1103-1113,11.基金项目
甘肃省自然资源厅科技创新项目(202415) （202415）
甘肃省科技计划项目重点研发计划项目(22YF7FA074,25YFFA001) （22YF7FA074,25YFFA001）
甘肃省自然资源厅重点人才项目(202304) （202304）
