Page 81 - 《水资源与水工程学报》2025年第2期
P. 81
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cientofrainfallisgreaterthan0.5,andthecorrelationfunctionvalueiscloseto0,indicatingpersistent
rainfallswithlittlevariations.Itisfoundthattherainfallconcentrationperiodisadvanced ,theannual
distributiontrendisflat,andtherecentannualrainfallisinalowperiod.Itissuggestedtostrengthenthe
preventionofmountainflooddisastersinducedbystrongrainfalleventsbeforefloodseason ,andmakefull
useofthewaterresourcesinsmallandmediumsizedreservoirsafterfloodseason.Hence,thesafetyof
agriculturalanddomesticwateruseinautumnandwintercanbeimproved,whichisanefficientapproach
toadaptingtothechangingenvironmentofrainfallintheDongjiangRiverSourceAreaunderclimate
change.
Keywords:rainfallcharacteristics;trendchange;Morletwaveletperiodicanalysis;Hurstcoefficient;
DongjiangRiverSourceArea
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