基于swat模型的香溪河流域农业水资源规划研究

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1、华北电力大学硕士学位论文AbstractTheXiangxiRiverisamajortributaryoftheThreeGorgesWatershed．TherunningoftheThreeGorgesProjectmakesthesurroundingwaterqualityevenworse．Besides，agriculturalnon—pointandindustrialpollutionsareincreasing，anddomesticwastewaterdischargesexceedi

2、ngly．ThesefactsmentionedaboveintensifywaterdeteriorationofXiangxiwatershed，resultingavailablewateramountreducessignificantly．Additionally,thereexistsmanyproblemsinagriculturalwatermanagementofthisarea，suchasunbalancedistributionwaterresourcesandcultivatedl

3、ands，lowproportionofagriculturalwaterallocationandunreasonableirrigationconditions，whichresultingregionalwatershortageandwasteofwaterresources．Sinceagriculturalwaterallocationplaysacruitialroleinthedevelopmentoflocalsocial—enconomy．Thusitisurgenttosolvingw

4、aterdistributionproblem，ensuringefficientlyutilizationandsustainabledevelopmentofwaterresoucesofthiswatershed．Intheconvetionalwaterallocation，preliminaryestimationofavaiablewateramoutsisnecessaryfordecision-makers．Thenwateramountsallocatedtousersaredetermi

5、nedandtheplanforwaterallocationschemecanbecarriedout．Itshowsavailablewateramountsinfluentthewaterschemesdirectlyandplayanimportantroleinwaterallocations．However,availablewateramountisuncertainandfluctuant，whichisimpactedbymultiplefactors，suchasclimate，topo

6、graphy,landuseandsoil．Therefore，itisaninevitabledimculttomakeaaccurateestimationofavailablewateramountindecision—makingprocess．ThisresearchchosesthedistributionalhydrologymodelSWATcarryingOilhydrologicalsimulationofXiangxiWatershed．Parametersarecalibratedt

7、hroughXingshanhydrologicstationactualrunoffmaterialsfrom1991tO2007，anddataobtainedfrom2008to2010areusedtovalidateparameters．ThecalibratedSWATmodelisappliedtomakeflprecisepredictionforsurfacewateramountintheWatershed，whichcanprovideagoodpremiseandguaranteef

8、oragriculturalwaterallocationmanagement．Afterwards，byintroducingfunctionalintervals，anintervalsemi—infinitetwo-stagestochasticoptimizationmodel(ITSOM)isdevelopedforagriculturalirrigationmanagementinXiangxiWat