基于遥感生态指数的绥江县土地生态质量动态评价

打开文本图片集

关键词：遥感生态指数；土地生态质量；绿度指数；湿度指数；干度指数；热度指数；绥江县中图分类号：X87 文献标识码：A文章编号：0439-8114（2025）12-0089-10DOI：10.14088/j.cnki.issn0439-8114.2025.12.016开放科学（资源服务）标识码（OSID）：

Dynamic evaluation of land ecological quality in Suijiang County based on remote sensing ecological index

PAN Yong-ping，GAO Cheng-jie，CHAO Jiang-qin，LIN Ji-qing （SchoolofGeographical Scienceand Tourism，Zhaotong University，Zhaotong 657Ooo，Yunnan，China）

Abstract：Basedontheremotesensingimagedataof2Oo0，210，and2020，thefourcoreindicatorsofgreendegreeindex（NDVI）， humidity index（WET），dryness index（NDBsI），and heat index （ LST ）were extracted through Landsat series satellite images，and theremotesensing ecologicalindex（RSEI）wasconstructed usingtheprincipalcomponentanalysis tocomprehensivelyevaluatethe landecologicalqualityofSuijiang County，YunnanProvince，andrevealitsspatialandtemporalevolutioncharacteristicsanddriving mechanisms.Theresultsshowedthat，from20o0to2O2O，theaverageRSEIofSuijiangCountydecreasedfromO.61to0.47，andthe ecologicalqualityshowedatrendofoveralldegradation.After2O1，thevegetationrestorationefectofSuijiangCountywaemarkable，andthegreendegreeidexcontiudtoincrease.Theexpansionofconstructionlandandthedryandhotclimateledtoigificantincreaseinthedryessindexandacontinuousdeclineinthehumidityindex.TheecologicaldegradationofSujiangCountywas concentratedintheJinshaRivercoastalareasndtheareaswiththeexpansionofconstructionland，whilethehigh-altitudearaswith good vegetation protection still maintained high ecological quality.

Keywords：remotesensingecologicalindex；landecologicalquality；greendegreeindex；humidityindex；drynessindex；heatindex; Suijiang County

土地作为人类生存与发展的物质基础，是诸多生存资料的重要来源。（剩余12058字）