竺山湖控藻围隔内浮游植物群落结构的变化特征
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2020-03-10 10:47:59
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安徽农业科学,JournalofAnhuiAgri.Sci.2015,43(3):154—158责任编辑陈玉敏责任校对李岩竺山湖控藻围隔内浮游植物群落结构的变化特征沈振华,朱明胜,张宏伟,周云峰,陈卫东(江苏省太湖渔业管理委员会办公室,江苏苏州215004)摘要为了研究太湖竺山湖生物控藻围隔内生态系统的结构以及放养鲢鳙对富营养化水质改善的效果,于2013年6~10月对该水域进行5次采样调查,并对浮游植物进行种类鉴定与数量统计,分析了浮游植物的群落结构、优势种和多样性特征。结果表明,共鉴定浮游植物8门71种,绿藻门最多,共26种,其次是硅藻门18种,蓝藻门14种,裸藻门5种,隐藻门3种,甲藻门和金藻门均为2种,黄藻门1种。浮游植物数量为5.83X10。~1.57X10ind/L,平均数量为1.05×10ind/L;生物量的变化范围为0.66~2.74mg/L,平均生物量为1.63mg/L。多样性指数日为1.40~2.55,平均值为1.82;均匀度指数的变化范围为0.39~0.47,平均值为0.43。根据TLI(∑)并结合浮游植物群落结构对水质评价,太湖竺山湖生物控藻围隔内水质属于轻富营养状态。关键词竺山湖;生物控藻;浮游植物;群落结构;水质中图分类号S917.3文献标识码A文章编号0517—6611(2015)03—154—04InvestigationinBio·manipulationPeninLakeZhushan,LakeTaihuSHENZhen-hua,ZHUMing—sheng,ZHANGHong-weietal(TaihuLakeFisheriesManagementCommitteeofJiangsuProvince,Suzhou,Jiangsu215004)AbstractToexplorethecharacteristicsofthephytoplanktoncommunitystructureanddiscusstheeffectsonimprovingeutrophicwaterinbio—manipulationpeninLakeZhushan.LakeTaihu.asurveywascarriedouteverymonthfromJunetoOctoberof2013.BasedontheanalysisofphytoplanktonsamplesfronninesitesinLakeZhushan.LakeTaihu.thecharacteristicsofcommunitystructureandabundancedistributionwerestudied.Theresultsshowedthattherewere8classesincluding71specieshavebeenfoundedinLakeZhushan.LakeTaihu.Amongthem,dominatedChlorophytahas26species,accountingfor36.62%ofthetotalphytoplanktonspecies,followedbyBacillariophytaandCya—nophyta,whichhas18and14species,respectively.Besides,Euglenophytahas5species,Crytophytahas3species,ChrysophytaandDino—phytahas2specieseachother,Xanthophyceaehasonly1species.Th。quantityandbiomassofphytoplanktoninLakeZhushan,LakeTaihurangedfrom5.83X10。一1.57X10find/Land0.66—2.74mL.respectively.ThediversityindexesofShannon—Wiener,PielouandMat-galefranged1.4O一2.55,O.39—0.47,respectively.Tu(∑),dominantspecies,Shannon—WeaverdiversityindexandPielouevennessindexwereintegratedtoassessthewaterqua1itv.rheresultindicatedthatthewaterqualityofLakeZhushan.LakeTaihuwaslighteutrophication.KeywordsLakeZhushan;Bj0manipulation;Phytoplankton;Communitystructure;Waterquality近年来,随着社
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