Page 63 - 《水资源与水工程学报》2023年第2期
P. 63

!34 " ! 2 #                       & ' ( ) & * + , -                               Vol.34No.2
               2023 $ 4 %               JournalofWaterResources&WaterEngineering                 Apr.,2023

            DOI:10.11705/j.issn.1672-643X.2023.02.08


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                 GHIJK:P333   LMNOP:A    LQRK:1672643X(2023)02005912
                         Multiscaleanalysisofrunoffvariabilityanditsinfluencing
                                 factorsinthemountainousHutuoRiverBasin


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                               CHANGYuru ,LIUXia,ZHAOXiaoning,SHENYanjun
                     (1.HebeiKeyLaboratoryofWatersavingAgriculture,KeyLaboratoryofAgriculturalWaterResourcesofCAS,
                      CenterforAgriculturalResourcesResearch,InstituteofGeneticsandDevelopmentalBiology,ChineseAcademy
                    ofSciences ,Shijiazhuang050021,China;2.UniversityofChineseAcademyofSciences,Beijing100049,China;
                              3.ShijiazhuangHydrologicalSurveyandResearchCenter,Pingshan050051,China)
                 Abstract:Runoffisanimportantindexwhichcanreflecttheclimateandgeographicalenvironment
                 changeinabasin,analyzingitsmultiscalevariabilityandinfluencingfactorsisofgreatsignificancefor
                 theunderstandingofhydrologicalchangesandtheprotectionofwaterresourcessecurityundertheback
                 groundofclimatechange.TheXiaojueRiverSubbasin (XJ)andYeRiverSubbasin(YR)inthe
                 mountainousHutuoRiverBasinwereselectedtostudythemultiscalerunoffvariabilityoftendencies,ab
                 ruptchangesandperiodsusingM-Ktrendtest ,abruptchangetestandMorletwaveletanalysisbasedon
                 themonitoredhydrologicalandmeteorologicaldata.Meanwhile ,therelativeimportanceofdrivingforces
                 (temperature,precipitation,potentialevapotranspirationandleafareaindex)atdifferentperiods(flood
                 seasonandnonfloodseason)onmonthlyrunoffchangeswererevealedbycorrelationanalysisandrandom
                 forestmodel.Resultsshowedthatfrom1960to2018,theannualaveragerunoffdepthofthetwosubba

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