Page 44 - 《水资源与水工程学报》2022年第4期
P. 44
!33 " ! 4 # & ' ( ) & * + , - Vol.33No.4
2022 $ 8 % JournalofWaterResources&WaterEngineering Aug.,2022
DOI:10.11705/j.issn.1672-643X.2022.04.06
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FGHIJ:S271;TV93 KLMNO:A KPQJ:1672643X(2022)04004010
Characteristicsanalysisofrainfallinducedfloodandwaterlogging
intheSanjiangPlainfrom1957to2019:
AcasestudyofSuibinCounty
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YOULijun,WANGShaoli,LIUChangrong,ZHANGXingbo,
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FANLinsheng,TAOYuan,PENGZhou 1
(1.DepartmentofIrrigationandDrainage,ChinaInstituteofWaterResourcesandHydropowerResearch,
Beijing100038,China;2.HeilongjiangProvinceServiceCenterforRuralWaterConservancyand
Hydropower ,Harbin150040,China;3.SuibinWaterAuthority,Hegang156200,China)
Abstract:TheSanjiangPlainisanimportantproductionbaseforcommoditygrainsinChina.Inrecent
years ,frequentfloodsandwaterlogginghavedirectlyaffectedregionalagriculturalproductionandbrought
seriouseconomiclosses.BasedonthedailyrainfalldatainSuibinCountyfrom1957to2019andtheoc
currenceofwaterloggingdisastersinthepast40years,theeigenvaluesofrainfall,thechangingtrends
andabruptchangesofrainydaysofvariousmagnitudeswereanalyzedusinglineartrendestimation ,Pear
son- Ⅲ frequencycurveandMann-Kendalltestmethod.TheresultsofPearson- Ⅲ frequencycurve
werecombinedwiththeoccurrenceofwaterloggingtoanalyzetheoccurrencefrequencyandcausesofwa
terlogginginthecounty.Theresultsshowedthatfrom1957to2019,theannualrainfallandthemaxi
mumdailyrainfallinSuibinCountyincreasedandtherewerenoabruptchanges.Themaximum3day
rainfallshowedadecreasingtrend ,withabruptchangesin1981and1997.Therainydaysoflightrain
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