季节性Kendall检验法在滦河干流水质分析中的应用.docxVIP

DOI:10．3969/j．issn．1004－6933．2014．05．011季节性检验法在滦河干流水质分析中的应用Kendall郭丽峰1，郭勇2，罗阳2，张俊1，王乙震1(1．海河流域水环境监测中心，天津300170;2．海河流域水资源保护局，天津300170)摘要:应用季节性Kendall检验法分析滦河水质变化趋势，并进行污染源识别。结果表明:滦河干流CODMn和NH3-N2个指标的浓度、污染物输送率及流量调节浓度均没有明显变化;通过流量调节后上下游各站点浓度变化趋势趋于一致，同一站点CODMn和NH3-N的变化趋势也较一致，流量调节浓度趋势分析能够更好地反映水质变化趋势。5个监测站点中只有三道河子和乌龙矶2个断面的CODMn浓度出现小幅上升;5个监测站点NH3-N输送率均未出现上升趋势，三道河子、乌龙矶和滦县3个监测站点CODMn输送率呈现上升趋势。郭家屯监测站点以上CODMn和NH3-N主要受面源污染影响;郭家屯以下的4个监测站点受点源和面源污染的双重影响，以点源为主。总体上，滦河干流水质有所好转，污染源中含氮有机物浓度在不断降低或稳定不变，有机污染物总量呈增长趋势。指出郭家屯监测站点以上要积极推进水土保持工作，减少水土流失造成的面源污染;滦河下游要加强对点源污染的治理。关键词:季节性Kendall检验法;水质变化;趋势分析;污染源识别;滦河干流中图分类号:X824文献标志码:A文章编号:1004－6933(2014)05－0060－08ApplicationofseasonalKendalltestmethodtoanalysisofwaterqualityinmainstreamofLuanheＲiverGUOLifeng1，GUOYong2，LUOYang2，ZHANGJun1，WANGYizhen1(1．HaiheＲiverBasinEnvironmentMonitoringCenter，Tianjin300170，China;2．WaterＲesourcesProtectionBureauofHaiheＲiverBasin，Tianjin300170，China)Abstract:TheseasonalKendalltestmethodwasusedtoanalyzethechangetrendofwaterqualityintheLuanheＲiverandidentifythepollutionsource．Theresultsshowthattheconcentrations，pollutanttransportrates，andflowcontrolconcentrationsofCODMnandNH3-NdonotdisplayasignificantchangetrendinthemainstreamoftheLuanheＲiver．Thechangetrendsofconcentrationsupstreamanddownstreamofthesiteswereconsistent，andthesame-siteCODMnandNH3-Nchangetrendswerealsoconsistentafterflowcontrol．Flowcontrolconcentrationanalysiscanbetterreflectthechangetrendofwaterquality．Ofthefivemonitoringstations，twostations，theSandaoheziandWulongjistations，hadaslightlyrisingtrendinCODMnconcentration．TheNH3-Ntransportrateshowednorisingtrendatanyofthefivemonitoringstations．TheCODMntransportrateshowedarisingtrendattheSandaohezi，Wulongji，andLuanxianstations．CODMnandNH3-NabovetheGuojiatunStationweremainlyaffectedbynon-pointsourcepollution．CODMnandNH3-Nattheotherfourstationswereaffectedbybothpointsourcepollutionandnon-pointsourcepollution，withthepointsourcepollutionbeingdominant．Asawhole，thewaterqualityinthemainstreamoftheLuanheＲiverhasimproved，th