预览加载中，请您耐心等待几秒...

1956—2011年金沙江下游梯级水电开发区降水变化特征分析.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

1956—2011年金沙江下游梯级水电开发区降水变化特征分析 Abstract TheJinshaRiverisanessentialriverinChina,anditsdownstreamregionhasundergonesignificantdevelopmentforhydropowergeneration.ThisstudyexaminestheprecipitationchangesintheJinshaRiverdownstreamhydropowerdevelopmentregionbetween1956and2011.WeanalyzedthetrendinprecipitationusingMann-Kendalltrendtests,andwealsoinvestigatedtheimpactsofclimatevariabilityonthehydropowergeneration.Theresultsindicatethatthereissignificantspatialandtemporalvariationinprecipitationchanges,withadecreasingtrendinannualprecipitationattheLijiangobservationstationsandincreasingtrendattheZhongdian,Wuding,andYongshanstations.Thestudyalsoshowsthatprecipitationchangeshavepotentiallyaffectedthehydropowerproductionintheregionbyeitherdecreasingorincreasingit.Thesefindingscanprovideimportantreferenceinformationfortheregion'sresearchandmanagementofitswaterresources,hydropower,anditssustainabledevelopment. Introduction TheJinshaRiveristhelargesttributaryoftheYangtzeRiver,anditisrecognizedasanessentialriverinChina.Theregionhasexperiencedsignificantdevelopmentforhydropowergeneration.Thisregionhashighseasonalprecipitation,andthehydropowerproductionlargelydependsonthewaterresourcesintheregion.Thus,thisstudyaimedtoanalyzethespatialandtemporalprecipitationchangesintheJinshaRiverdownstreamhydropowerdevelopmentregionfrom1956to2011.Thestudyalsoaimedtoinvestigatetheimpactofclimatevariabilityonhydropowergenerationintheregion. Methodology WeusedmonthlyprecipitationdatafromfivemeteorologicalstationslocatedinLijiang,Zhongdian,Wuding,Yongshan,andYuxiinthestudyarea.Theselectedstationshavecompleteprecipitationdatarecordsbetween1956and2011.Wealsocollecteddataonhydropowergenerationfortheperiodtoexaminetheimpactsofprecipitationchangesonhydropowerproduction.WecalculatedtheprecipitationtrendsusingtheMann-Kendalltrendtestbecausethismethodislesssensitivetooutliersandmoreappropriatefortheanalysisofthesmalldatasetliketheoneusedinthisstudy. Results Thetrendanalysisofannualprecipitationatthefivestation