分布式水文模型在湟水流域的適用性研究.pdf

1、西安理工大學碩士學位論文分布式水文模型在湟水流域的適用性研究姓名：王亞軍申請學位級別：碩士專業(yè)：水文學及水資源指導教師：黃強20080301西安理工大學碩士論文Title：STUDYONAPPLICABILITYOFS、『1，ATINHUANGSHUIRIVERBASINMajor：HydrologyandWaterResourcesName：YajunWANGSignature：Supervisor：ProfQiangHuangSig

2、natureAbstractDistributedhydrologicalmodel——SoilandWaterAssessmentTool(SWAT)isappliedtosimulatewaterrecycleprocess，soilerosionprocess，andthetransferprocessofpollutingmaterialsinHuangshuiRiverBasinSowecanmakeaquantitative

3、assessmentonwateryield、sedimentyieldandpollutantyieldofthebasinaswellastheirspatio—temporaldistributionAnd、^，i也thehelpofSWATwecallurdfythecontinuouschangeofwaterquantity、析ththeevolvementofassociatedwaterqualitySOthecompr

4、ehensiveassessmentonwaterquantityandqualityofthebasinwouldbecarriedoutFirstlythenetworkofriversandsubbasinareidentifiedfromDEMofthebasinThenthesoiltypeandlandusearereclassified，thedatabaseofsoilsissetupParametersofthemod

5、elwerecalibratedandthemodelistestedbyobserveddataandthecriticalparametersaretestedbyasensitiveanalysisInconsiderationthatthestudyareaisabout15600km。large，thegoodnessoffitofthemodelissatisfiedThesimulatedoutcomebythecalib

6、ratedmodelshowsthatover70percentprecipitationand65percentrunoffofthebasinfocusontheupperreachesofXiningstation，while80percentsedimentyieldand70percentnon—pointsourcepollutantscomefromthewatershedareawhichlocatebetweenXin

7、ingstationandMinhestationThedifferenceofwateryield，sedimentyieldandloadingsofnonpointsourcepollutantsindifferenthydrologicyearsisdramaticThesedimentandloadingsofnon—pointsourcepollutantscausedbyrainstormfocusonfloodseaso

8、nespeciallyinJulyEachlandcoverrepresentedinthemodelyieldsdifferentresultsTilthcontributesthemostofnitrateandsolublephosphorusyieldRNGB(themountainrangebrush)andSWRN(themountainrangegrasses)contributesthemostsedimentyield

9、accompanyingthehighestORG—NandSED_PyieldFinallythemodelisappliedtomakecomprehensiveassessmentonthebasin’swaterquantityandqualityTheoutcomeshowedthatthewaterpollutionoftheHuangshuiRiverisveryserious，whichwascoveredinsomed