华中师范大学学报（自然科学版）2026，Vol.60Issue(2)：195-207,13.DOI:10.19603/j.cnki.1000-1190.2026.02.004
金沙江上游河谷地区土地利用变化及其对生态系统服务价值的影响研究
Study on land use change and its impact on ecosystem service value in the upper Jinsha River Valley
摘要
Abstract
Using the land use transfer matrix and the InVEST model,this study analyzed the characteristics of land use change in the upper Jinsha River valley from 1990 to 2023.Evaluating ecosystem service values(ESV)includes water yield,soil conservation,carbon storage,and habitat quality,and further explores the impacts of land use change on ESV.Results are shown as follows.1)During the period of 1990-2023,the grassland was mainly converted to and from forest land and cropland,with both forest land and grassland showing a decreasing trend.Water bodies were mainly converted from grassland,forest land,and cropland,and partly transformed into tidal flats and shoals,resulting in decrease in area.2)Forest land contributed the most to water yield,accounting for more than 33.08％of the total,showing a fluctuating pattern with three peaks and two troughs;shrubland ranked second with a contribution rate of 19.84％ and relatively small fluctuations.Grassland accounted for the largest share of soil conservation,exceeding 42.20％ of the total,followed by forest land at 27.38％.Soil conservation of various land use types exhibited a fluctuating trend with three peaks and three troughs,showing an overall decreasing tendency.Forest land had the largest carbon storage,accounting for 40.16％,followed by grassland at 27.46％,forming the most important regional carbon sink.Carbon sequestration capacity showed a rapid decline in the early stage followed by a slight increase.The mean habitat quality index remained above 0.83 with small fluctuations over time.3)From 1990 to 2023,the spatial distribution of ecosystem service values showed significant heterogeneity.The direction of land use conversion determined the changes in spatial heterogeneity,while the overall spatial differentiation pattern of ecosystem service values remained relatively stable.关键词
金沙江上游河谷地区/土地利用变化/生态系统服务价值Key words
upper Jinsha River Valley/land use change/ecosystem service value分类
资源环境引用本文复制引用
张毅,张婧茹,刘苏,熊姁,崔磊,梅涛..金沙江上游河谷地区土地利用变化及其对生态系统服务价值的影响研究[J].华中师范大学学报（自然科学版）,2026,60(2):195-207,13.基金项目
水电水利规划设计总院研究项目(20250682). （20250682）
