干旱区地理2024，Vol.47Issue(10)：1755-1766,12.DOI:10.12118/j.issn.1000-6060.2023.708
石羊河流域生态系统服务相互作用的时空变化及驱动机制研究
Spatiotemporal changes and driving mechanism of ecosystem service interac-tions in the Shiyang River Basin
摘要
Abstract
Understanding the spatiotemporal distribution and the internal complex relationships of ecosystem ser-vices is essential for their management.With the Shiyang River Basin,Gansu Province,China as the research ar-ea,six ecosystem services were evaluated in 2010,2015,and 2020.The trade-off/synergy of ecosystem services and the spatial changes of service bundles on the grid and township scale were analyzed,and a boosted regression tree model was used to analyze the driving mechanism of ecosystem service bundles in the research area.The re-sults showed the following:(1)The spatial differences of various services were obvious.The spatial pattern of wa-ter yield,carbon storage,soil conservation,and habitat quality was"southwest high-northeast low".Food produc-tion was mainly distributed in the farming areas in the north-central part of the basin,and the high-value areas of recreational service were distributed in the southern areas and the central parts of the basin and in densely populat-ed areas in the north.During the research period,all kinds of services were improved to varying degrees,with the increase in soil conservation having the largest improvement and the increase in carbon storage and habitat quali-ty having the smallest.(2)The trade-offs and synergies of ecosystem services on two scales showed similarities,but their intensities were different.Overall,there were twelve pairs of synergy and three pairs of trade-off rela-tionships.(3)The spatial patterns of ecosystem service bundles on two scales were similar.In addition to food production,there were five service-related service bundles in the southern part of the river basin.In the central and northern Minqin oasis areas of the basin,there were service bundles related to food production and recreation-al service.The ecological environment in other areas was relatively harsh.There was no outstanding service sup-ply in the service bundles,but there were obvious changes in the number and space transfer of service bundles during the study period.(4)Many factors played an important role in the changes in ecosystem service bundles in the research area,and the impact factors were slightly different in different years.Among them,land use type,nor-malized difference vegetation index,annual precipitation,and altitude were the main drivers of the changes in ecosystem service bundles.关键词
生态系统服务簇/权衡协同/增强回归树模型/石羊河流域Key words
ecosystem service bundle/trade-offs and synergies/boosted regression tree model/Shiyang River Basin引用本文复制引用
胡飞鹏,赵军,孙紫云,刘坚,托瑞..石羊河流域生态系统服务相互作用的时空变化及驱动机制研究[J].干旱区地理,2024,47(10):1755-1766,12.基金项目
国家自然科学基金项目(42161072)资助 （42161072）
