草原与草坪2025，Vol.45Issue(3)：13-23,11.DOI:10.13817/j.cnki.cyycp.2025.03.002
生态恢复前后民勤盆地荒漠—绿洲生态系统土地利用/覆被变化分析
Analysis of land use and land cover changes in the Minqin Basin desert-oasis ecosystem of before and after ecological restoration
摘要
Abstract
[Objective]Ecological restoration measures are an effective way in mitigating ecological degradation and improving environment quality.Land use and land cover change is a direct indicator of the interaction between hu-mans and the environment.This study aims to evaluate the ecological restoration effect of the comprehensive manage-ment project of the Shiyang River Basin in promoting ecological restoration,using land as an indicator.[Method]The Minqin desert—oasis ecosystem in the lower reaches of the Shiyang River was selected as the study area.Based on the land use data with a spatial resolution of 30 meters from 2000 to 2020 during the"Comprehensive Treatment Pro-gram of the Shiyang River Basin".Spatial analysis methods were used to assess the impact of the ecological restora-tion program across three key periods:pre implementation(2001-2005),project stage Ⅰ(2006-2010),and project stage Ⅱ(2011-2015).Evaluation was conducted under three aspects:land use/cover type quantity,land use/cover type structure,and land use degree.[Result]The results show that:1)From 2000 to 2020,the dominant land use/cover types in the study area were unused land,cultivated land,and grassland,accounting for over 95.00％of the to-tal areas;2)The area of land use/cover types in each study stage changed to varying degrees during each project stage,with frequent conversions observed-particularly between unused land and cultivated land;3)The construc-tion land category exhibited the highest single dynamic degree,with an average of 0.61,while the contribution rate of unused land is the largest,with an average of 33.41％.4)The comprehensive index of land use degree showed a fluc-tuating upward trend of"increase-decrease-increase",with an overall change rate of 3.81％,indicating that the re-gion remained in a development period with a relatively rapid degree of land use change.[Conclusion]Thus we can conclude that the Comprehensive Treatment Program of the Shiyang River Basin has significantly influenced the quantity and structure of land use/cover types in the Minqin Basin,reflecting the relatively fast development level overall degree of land use during the development period.关键词
土地利用/覆被变化/生态恢复/石羊河流域综合治理工程/荒漠—绿洲生态系统/民勤盆地Key words
land use/cover change/ecological restoration/comprehensive treatment program of the Shiyang River Basin/desert—oasis ecosystem/Minqin Basin分类
农业科技引用本文复制引用
李东辉,刘雪霞,余涛,刘新,叶国辉,马义杰,花立民..生态恢复前后民勤盆地荒漠—绿洲生态系统土地利用/覆被变化分析[J].草原与草坪,2025,45(3):13-23,11.基金项目
国家自然科学基金项目(41907406,32160338) （41907406,32160338）
武威市科技计划B类项目(WW24B01NY055) （WW24B01NY055）
国家林业和草原局草地啮齿动物危害防控创新团队 （）
