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1、華北電力大學碩士學位論文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
