Page 51 - 《水资源与水工程学报》2025年第1期
P. 51

!36 "!1 #                         & ' ( ) & * + , -                               Vol.36No.1
               2025 $ 2 %               JournalofWaterResources&WaterEngineering                 Feb.,2025

            DOI:10.11705/j.issn.1672-643X.2025.01.06


                  1957—2018 °'(Å|0Å)*¼‡Æi+,



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               BC<DE:TV213.4   FGHIJ:A    FKLE:1672643X(2025)01004707

                  SpatiotemporalvariationsofwaterconservationintheGanjiangRiver
                                        headwaterareafrom1957to2018

                                                                     3
                                                         1
                                         1,2
                                   XUFei ,WENTianfu,LIUJiajia,ZHAOLingling           2
             (1.JiangxiKeyLaboratoryofFloodandDroughtDisasterPrevention,JiangxiAcademyofWaterScienceandEngineering,Nanchang
               330029,China;2.GuangdongKeyLaboratoryofRemoteSensingandGeographicalInformationSystemApplication/Guangdong
                  OpenLaboratoryofGeospatialInformationTechnologyandApplication,GuangzhouInstituteofGeography,Guangdong
                    AcademyofSciences ,Guangzhou510070,China;3.StateKeyLaboratoryofSimulationandRegulationofWater
                      CycleinRiverBasin ,ChinaInstituteofWaterResourcesandHydropowerResearch,Beijing100038,China)
               Abstract:Waterconservationisanessentialserviceforterrestrialecosystem,whichplaysanimportantrole
               inwatersupply ,runoffregulation,andwatermitigation.However,currentresearchesonwaterconservation
               inriverheadwaterareasarerarelyreported ,especiallythestudyofspatiotemporalevolutionofwaterconser
               vationoveralongperiodoftime.ThisstudyadoptstheWEP-Ldistributedhydrologicalmodelandthewa
               terbalanceequationtoanalyzethewaterconservationintheheadwaterareaoftheGanjiangRiveranditsin
               fluencingfactorsduring1957-2018.Theresultsshowthattheannualmeanwaterconservationis552.3
               mmintheheadwaterareaoftheGanjiangRiveroverthestudyperiod ,withagrowthrateof0.85mm/a.
               Theannualwaterconservationrangesfrom44.2to1178.6mm ,characterizedbyagreaterdistributionin
               thenorthandsouthandasmallerdistributioninthewest.Thevariationtrendofwaterconservationinthe
               studyarearangesfrom -1.99to5.45mm/a,whichishighinthenorthandlowinthesouth.Thecoeffi
               cientofvariationchangesintherangeof0.27-2.91,with82.68% ofthearealowerthan0.55,indica
               tingrelativelysmallfluctuations.Precipitationisthemainfactorinfluencingthespatiotemporalvariationsof
               waterconservation.Thisstudycanprovideatechnicalsupportforwaterresourcesandecologicalprotection.

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