文档介绍：第 卷第 期 四川农业大学学报
39 4 ngWater
ResourcesProtectionInstitute，Wuhan430051，China；-PointSource
PollutioninLakeandReservoirWaterSources，ChangjiangWaterResourcesCommission，Wuhan430051，China）
Abstract:【 】
Objective Thepurposeofthisstudyistocomprehensivelyevaluatethesoilfertilitytakingthe
estuaryofQingtangRiverintoDanjiangkouReservoirisselectedastheareastudiedbyfittingthediscrete
，
localsamplepointsintocontinuousspatialdistribution inordertoprovidethebasisfordifferentialim-
，
provementofvegetation soastoprotecttheecologicalenvironmentandwaterqualitysafetyofthewater
【 】 ，
source. Method Themethodofprincipalcomponentanalysis clusteranalysisandKriginginterpolation
【 】
wereused. Result TheresultsshowthattheaveragepHvalueofsoilintheareastudiedwasbasically
，
％ whichindicatesthestability
，
ofacidityan