Page 58 - 《水资源与水工程学报》2023年第4期
P. 58

!34 " ! 4 #                       & ' ( ) & * + , -                               Vol.34No.4
               2023 $ 8%                JournalofWaterResources&WaterEngineering                 Aug.,2023

            DOI:10.11705/j.issn.1672-643X.2023.04.07


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                 MNOPQ:TV121;TV21   7RSTU:A    7VWQ:1672643X(2023)04005412
                          Approachforwaterresourcesassessmentbasedonrunoff
                              componentinvestigationmethodandSWATmodel

                                       1
                                                     1
                                                                     2
                                                                                   2
                        WANGYanxuan,HUTiesong,WANGJinglin,WUFengyan,WANGXin                     2
                           (1.StateKeyLaboratoryofWaterResourcesEngineeringandManagement,WuhanUniversity,
                           Wuhan430072,China;2.HubeiWaterResourcesResearchInstitute,Wuhan430070,China)
                 Abstract:Longseriesofnaturalrunoffdataundercurrentunderlyingsurfaceconditionsarethebasisof
                 waterresourcesassessment.However,changesoftheunderlyingsurfaceandhumanactivitiesoftenaffect
                 thehydrologicalcycleprocess,bringingsystematicdeviationandgreatuncertaintytowaterresourcesas
                 sessment.TakingtheXishuiRiverBasinasanexample ,awaterresourcesassessmentmodelisproposed
                 combiningtherunoffcomponentinvestigationmethodandtheSWATmodel.Differentwaterbalancee
                 quationsareestablishedforrunoffreconstructionaccordingtotherelationshipbetweenthelocationsofthe
                 hydrologicalstationandthereservoir ,andtheparametersofthemodeliscalibratedandverifiedusingthe
                 runoffdatawhichisreconstructedbytheyearswithsimilarunderlyingsurfaceconditions.Thenthemodel
                 isappliedtothesimulationofalongseriesnaturalrunoffprocess.Theresultsshowthatthereareobvious
                 deviationsintheconsistencyoftherainfall-runoffseriesofthehydrologicalstationsreconstructedonly
                 bytherunoffcomponentinvestigationmethod.However ,byconstructingtheSWATmodelbasedonthe
                 currentunderlyingsurfaceconditions ,thecorrelationbetweenrainfallandrunoffofthesimulatedrunoff
                 valuesofeachhydrologicalstationisbetterthanthereconstructedvalues ,andtheconsistencyoftherain
                 fall-runoffrelationshipindifferentperiodsissignificantlyimproved ,whichindicatesthatthisapproach
                 caneffectivelycorrecttheimpactofunderlyingsurfacechangesonrunoff ,andishelpfulforthefurther
                 studyofwaterresourcesplanningandriskassessmentoffloodanddroughtdisasters.
                 Keywords:runoffcomponentinvestigationmethod;SWATmodel;naturalrunoffreconstruction;consis
                 tencycorrection;waterresourcesassessment

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