黄河流域中游生态系统服务价值时空变化特征及驱动因素

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关键词：生态系统服务价值；土地利用变化；XGBoOst—SHAP模型；黄河流域中游中图分类号：X171.1 文献标识码：A 文章编号：1671-8151（2025）05-0125-12

Abstract：Objective]Factorssuchasloosesoiltructure，significantterrainundulation，andlowvegetationcoveragecontribute topoorecologicalstabilityintheLoess Plateauregion，makingthemiddlereachesof theYelowRiveratypicalareaofprominentecologicalvulnerabilityinChina.Acuratelyestimatingthedynamicchanges inecosystemservicevalue（ESV）and its influencing factors isofgreatsignificanceforpromoting sustainabledevelopmentin this region.Methods]This studycostructed anESVvaluationmodelthatincludedconstructionland，basedonamodifiedequivalentfactor method.Usingtheland use transfermatrixandXGBoost-SHAPmodel，weexaminedthedynamicevolutionoflanduseandESV，aswellasthefactors influencing ESVinthe studyarea.[Results]（1）Landuse typesand transitionsin the middlereachesoftheYelow RiverBasin were primarilycharacterizedbycultivatedLand，grassland，andforest.Thedynamicchanges insinglelandusetypes，particularly cultivated land and construction land，were significant，with rates of -2.95% and 1.90% ，respectively. The comprehensive land use dynamic degree averaged 0.15% ，peaking at 0.32% from 2005 to 2Olo.（2） The total ESV in the middle reaches of the Yellow River Basin gradually decreased，with an overall reduction rate of 21.95% . Areas with low and medium ESV shrank，whiletosewithigherESVexpanded，presentingaspatialdistributionpaterthatdecreasedfromnorthwesttosouth east.（3）Nighttime light intensity was the most significant factor affcting ESV changes，accounting for 23.03% .Average slope，forest proportion，andannualaverage temperaturehad positiveefectsonESV，whereas nightimelight intensity，culti vatedlandproportion，populationdensity，andaverage altitudehadnegativeefects.The influenceofotherfactors wasrelatively minor.[Conclusion]Due torapid economicdevelopmentandthegradualadvancement ofurbanization，theESVinthe middlereachesoftheYellowRiverBasinshowedadecreasing trend.Itisessentialtodeepentheunderstandingof theimpactsof naturalandhumanactivitiesontheecologicalenvironment.Thefindingsofthisstudycanprovidescientificsupportforoptimizingthespatialpaternofecosystemservicesandformulatingecologicalprotectionstrategies inthemiddlereachesoftheYellow River Basin.

Keywords：Ecosystemservices value，Landusechanges，XGBoost-SHAPmodel，MiddlereachesoftheYelowRiverBasin

生态系统服务（ES）是指人类从自然界中获得的直接或间接利益。（剩余20299字）