Page 68 - 《水资源与水工程学报》2022年第4期
P. 68

!33 " ! 4 #                       & ' ( ) & * + , -                               Vol.33No.4
               2022 $ 8 %               JournalofWaterResources&WaterEngineering                 Aug.,2022

            DOI:10.11705/j.issn.1672-643X.2022.04.09


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                 FGHIJ:P333;TV121   KLMNO:A    KPQJ:1672643X(2022)04006408

                          Characteristicsofrunoffchangesandinfluencingfactors
                                    inthesourceregionoftheYellowRiver

                                                                                                           3
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             LIANGPengfei ,LIZongjie,XINHuijuan,LIZongxing ,DUANRan,NANFusen,LIYuchen
            (1.KeyLaboratoryofYellowRiverWaterEnvironmentinGansuProvince,SchoolofEnvironmentandMunicipalEngineering,Lanzhou
            JiaotongUniversity ,Lanzhou730070,China;2.CollegeofEnergyandPowerEngineering,LanzhouUniversityofTechnology,Lanzhou
                730050,China;3.KeyLaboratoryofEcohydrologyofInlandRiverBasins/GansuQilianMountainsEcologyResearchCenter,
                     NorthwestInstituteofEcoenvironmentandResources,ChineseAcademyofSciences,Lanzhou730000,China)
                 Abstract:Inrecentyears,thewaterresourcesconditionsinthesourceareaoftheYellowRiverhave
                 changedconsiderably,basedon58yearsofrunoffandmeteorologicaldatafrom1961-2018,Mann-
                 Kendalltestandwaveletanalysiswereusedtoanalyzethecharacteristicsandinfluencingfactorsofthese
                 runoffchanges.Theresultsshowthattherunoffshowedanonsignificantdecreasingtrendasawholeby
                                    8
                                       3
                 therateof-0.63×10 m /a,withalargerdecreaseinsummerandautumn,butasmallerdecreasein
                 winterandspring;however,itpresentedanonsignificantincreasingtrendbothbeforeandafter1990,
                 andtheincreasingtrendacceleratedsignificantlyafter1990,thelatterwas3.09timesoftheformer.
                 Meanwhile,theincreasinghighvalueareaofprecipitationoverlappedwiththatoftemperatureafter1990,
                 andprecipitationwasthemostimportantfactoraffectingrunoffchanges.Thesefindingsindicatethatthe
                 acceleratedwarmingandhumidification ,aswellasitsspatialmigrationdirectlyledtotheaccelerated
                 meltingofglaciers,whichwasalsothereasonfortherapidincreaseofrunoffafter1990inthesourcere
                 gionoftheYellowRiver.
                 Keywords:runoffclimatechangecharacteristics;temperater;precipitation;sourceregionoftheYellow
                 River

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