Page 33 - 《水资源与水工程学报》2025年第1期
P. 33
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2025 $ 2 % JournalofWaterResources&WaterEngineering Feb.,2025
DOI:10.11705/j.issn.1672-643X.2025.01.04
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BC<DE:P333;TV213.4 FGHIJ:A FKLE:1672643X(2025)01002911
ImpactoffuturewaterresourceschangesontheLuan-Tianjin
WaterDiversionProjectbasedonCMIP 6
WANGLinhao,ZHANGTing,LIJianzhu,FENGPing
(StateKeyLaboratoryofHydraulicEngineeringIntelligentConstructionandOperation,TianjingUniversity,Tianjin300350,China)
Abstract:InordertorevealtheimpactoffuturewaterresourceschangesontheLuan-TianjinWaterDi
versionProject ,weconstructedaSWATmodelforthePanjiakouReservoircontrolledwatershedinthe
LuanheRiverBasinbasedongeospatialandhydrometeorologicaldata.Foursingleindicatorsandone
comprehensiveindicatorwereselectedtoevaluatetheapplicabilityoftheselectedeightglobalclimate
models (GCMs)onastationbystationbasis,andaweightedmultimodedatasetwasassembledbased
ontheevaluationresults.Subsequently ,theimprovedDelta-DCSIwasusedtodownscaleandcorrect
themeteorologicaldata ,whileretainingitstrendsignal.Thecorrectedmeteorologicaldatawasthenused
todrivetheSWATmodel ,soastopredictthewaterresourceschangesinthefuturescenario.Theresults
showthattheproposedSWATmodelhasgoodapplicability,andtheaccuracyofthemultimodeensemble
dataaftermodeloptimizationcanmeettherequirementsoftheSWATmodelforfutureprediction.Inthe
future ,theinterannualvariationofrunoffinthethreeclimatescenarioswillbedramaticwithgreatfluctu
ations,showinganoverallincreasingtrend.Comparedto1997-2022,theinflowrunoffofPanjiakou
Reservoirwillincreasesignificantlyinthefuture,providingabundantwaterforthebasin.Asaresult,
thewaterdemandofTianjinfromLuanheRiverwaterdiversionwilldecrease.
Keywords:waterresources;downscaling;coupledmodelintercomparisonprojectphase6(CMIP6);
soilandwaterassessmenttool(SWAT)model;Luan-TianjinWaterDiversionProject
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