傀儡湖大型底栖动物群落与水质评价  

STRUCTURE OF BENTHIC MACROINVERTEBRATE COMMUNITY AND ASSESSMENT OF WATER QUALITY IN KUILEI LAKE

作　　者：熊晶[1,2] 谢志才[1] 张君倩[1,2] 蒋小明[1,2] 方涛[1] 敖鸿毅[1] 过龙根[1] 邓永良 

机构地区：[1]中国科学院水生生物研究所,湖北武汉430072 [2]中国科学院研究生院,北京100039 [3]昆山市自来水集团有限公司,江苏昆山215300

出　　处：《长江流域资源与环境》2010年第S1期132-137,共6页Resources and Environment in the Yangtze Basin

基　　金：国家重点基础研究发展计划(2007CB109205);国家科技重大专项水体污染的控制与治理(2008ZX07102-005;2008ZX07105-004);企业委托IHB/CN/2008027

摘　　要：2008年对昆山市傀儡湖的大型底栖动物进行季度调查,共记录底栖动物17科66种。其中,寡毛纲2科18种,摇蚊科26种,软体动物8科14种,其它动物8种。采用聚类分析,将傀儡湖分为4个湖区。傀儡湖底栖动物密度在西南部较高(湖区Ⅲ、Ⅳ),中部和东北部(湖区Ⅰ、Ⅱ)较低,取水河道高于入水口样带。底栖动物生物量(湿重)中,软体动物均占绝对优势。典范对应分析显示,总磷和溶氧是影响底栖动物群落分布的关键环境因子。BI生物指数对傀儡湖水质的评价最接近实际情况:傀儡湖区整体水质属于污染,各湖区的水质清洁度排序为湖区Ⅱ>湖区Ⅳ>湖区Ⅲ>湖区Ⅰ。取水河道(湖区Ⅴ)水质轻度污染,而入水口样带(湖区Ⅵ)的水质污染最为严重。Seasonal investigations on benthic macroinvertebrates were carried out in Kuilei Lake in 2008,the main drinking water supply source of Kunshan City,Jiangsu Province.Altogether 66taxa were identified from fifteen sampling sites.Among them were 18taxa of oligchaetes,26taxa of chironomids,14taxa of mollusks and 8forms of miscellaneous animals.Kuilei Lake was partitioned into four macrobenthic zones by Hierarchical Cluster Analysis.Densities of benthic macroinvertebrates were higher in southwest of Kuilei Lake(zone III and IV)than those in central and the northeast of the Lake(zone I and II).According to the wet weight,mollusks were dominant.Canonical correspondence analysis(CCA)was applied to explore the importance of environmental variables in influencing macroinvertebrate community structure.DO and TP were the key predictors of the community variance.The water quality was assessed using Shannon-Wiener diversity,Family Biotic Index and Biotic index,and totally it was polluted during the sampling period.The water quality of the outlet of Kuilei Lake(zone V)was least polluted,while inlet of Kuilei Lake(zone VI)was most polluted.Considering the coincidence with physical-chemical parameters,BI bioassessment methods were fitter to apply in this region.

关 键 词：傀儡湖 大型底栖动物 群落结构 水质评价 

分 类 号：X174[环境科学与工程—环境科学] X824