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《基于干旱指數(shù)的廣西干旱時(shí)空變化分析》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、AbstractGuangxiislocatedinsemi-tropicalarea,withhumidclimate,richprecipitationandwelldevelopedwatersystem,suchas,LiujiangRiver,LijiangRiver(inGuangxi),HongshuiRiveretc.Butcauseoftheunevendistributionofprecipitation,therunoffallarezonalandperiodicinthisarea,whichleadstoinconveniencetotheuseofwater
2、inindustrialandagricultural,evenleadstodryingupofrivers,theshortageofwaterresources,theproblemsofdrinkingwater,andrestrictthedevelopmentoftheeconomy,eventhoughgetaseriesofecologicalenvironmentproblems.Inrecentyears,extremedroughteventsoccurredfrequentlyinourcountry,whichseriouslyaffectspeople'spr
3、oductionandlife.Thestudyisbasedonthemeteorologicalobservationdatafrom1961to2010of20nationalstandardmeteorologicalstationswhichlocatedinGuangxiprovince,andinterpolatethedatawithANUSPLINsoftware,andintroducedtheinterpolationresultsintoArcGISmappingforspatialanalysis.First,westudyonthetemporalandspa
4、tialdistributioncharacteristicsofprecipitationandtemperatureinGuangxiforrecent50years.Secondly,calculatethedroughtindexsuchasthePalmer,SPI,SPEIandtheextremeclimateindexwiththeapplicationofthemeteorologicaldataofeachstation,andanalysisthetemporalandspatialdistributioncharacteristicsofthelongtermme
5、teorologicaldroughtinGuangxifor50yearsfromtheperspectiveofmeteorologicaldrought.Finally,analysisoftheimpactofclimatechangeonbananaplantingareaissuitableforuseinbananaplantingfromtheperspectiveofagriculture.ThestudyshowsthattheprecipitationandtemperatureinGuangxiareashowsobviousimbalanceintemporal
6、andspatialdistribution.Intime,theprecipitationandtemperatureshowedtheobviousseasonalvariation,whichmeanstheprecipitationandtemperaturereachesthemaximumvalueinsummer,andthendecreasedgraduallytothelowestinwinter.Inthesequenceof50years,Guangxishowedaslowdownwardtrendinprecipitation,whilethereisasign
7、ificantupwardtrendintemperature.Inspace,thereisacertaincorrelationbetweenthedistributionofprecipitation,temperatureandaltitude,thevalueinSouthishigherthanNorth.Eachdroughtindexshowsthatthefrequencyofdroughtwaslowinthef
