镜泊湖浮游藻类组成及其与环境因子的相关分析
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2020-03-16 10:22:11
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中国环境科学2015,35(11):3403-3413ChinaEnvironmentalScience镜泊湖浮游藻类组成及其与环境因子的相关分析汪星,一,刘录三,,李黎,一,周娟,一,王瑜,一,夏甫,夏阳1,2(1.中国环境科学研究院,环境基准与风险评估国家重点实验室,北京100012;2.中国环境科学研究院,国家环境保护河口与海岸带环境重点实验室,北京100012;3.北京中环国宏环境资源科技有限公司,北京100012)摘要:2013年5月、9月及lO月在镜泊湖26个采样位点共采集到浮游藻类8门74属140种.其中绿藻门最多,共58种,占41.5%.浮游藻类组成以绿藻和硅藻占优,并且藻类群落结构存在明显的时空差异,各调查位点藻的种类范围在3~35种,密度范围在O.5×104~230.8x104个/L.调查期间,浮游藻类的Margalef指数、Shanoon—Wiermer指数以及Pieloud指数范围分别为0.48~2.3l,1.27~3.97,0.45~0.94,水体综合营养状态指数值TLI在40--60之间,总的来看,镜泊湖水体属于中营养一轻度富营养状态.Pearson相关分析结果显示,镜泊湖藻类群落分布受水环境因子影响明显.整体上,水温、DO、SD、CODM及NH3-N是影响镜泊湖藻类种群分布格局的主要因素.关键词:镜泊湖;藻类组成;营养等级;环境因子中图分类号:X82文献标识码:A文章编号:1000—6923(2015)l卜3403—11CorrelationanalysisofalgaecompositionandenvironmentalfactorsinJingpoLake.WANGXing,LIULu-san,LILi.-,ZHOUJuan,WANGYuL2,ⅪAFu3,ⅪAYang,(1.StateKeyLaboratoryofEnvironmentalCriteriaandRiskAssessment,ChineseResearchAcademyofEnvironmentalSciences,Beijing100012,China;2.StateEnvironmentalProtectionKeyLaboratoryofEstuarineandCoastalEnvironment,ChineseResearchAcademyofEnvironmentalSciences,Beijing100012,China:3.ChinaEnvironmentalResourcesTechnologyCo.,Ltd.Beijing100012,China).ChinaEnvironmentalScience,2015,35(11):3403-3413Abstract:ThisresearchwasperformedatMay,SeptemberandOctoberin2013at26stationsofJingpoLake,aimingtoinvestigatethealgalspecies.Atotalof140kindsofalgalspeciesbelongingto74generaof8phylawereidentified.ThealgalcommunitywasdominatedbyChlorophytaandBacillariophyta,andsignificantdifferencewasfoundonalgalcompositionacross26samplingstations.Thealgaehadthespeciesrangingfrom3to35andabundancerangingfromO.5×10to230.8x10cells/L,andobviouslydiferentacrossthesamplingstationsinthethreeseasons.Overall,Margalefvaluesvariedfrom0.48tO2-3l,whileShannon-WiennerandPieloudvaryingfrom1.27to3.97and0.45toO.94,andTLIofthewatervariedfrom40to60,bothshowingthatthewaterstatusofJingpoLakevariedfrommiddlenutritiontolighteutrophication.PearsoncorrespondenceanalysiswasappliedtoexploretherelationshipbetweenalgalspeciesandenvironmentalparametersbySPSS13.0.Theresultshowedthatwate
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