长江流域资源与环境 >> 2010, Vol. 19 >> Issue (z1): 132-.

• 自然资源 • 上一篇    下一篇

傀儡湖大型底栖动物群落与水质评价

熊晶,谢志才, 张君倩,蒋小明,方涛,敖鸿毅,过龙根,邓永良   

  1. (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)
  • 出版日期:2010-08-23

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

XIONG Jing1|2| XIE Zhicai1| ZHANG Junqian1|2| JIANG Xiaoming1|2| FANG Tao1| AO Hongyi1| GUO Longgen1| DENG Yongliang3   

  1. (1.Institute of Hydrobiology| Chinese Academy of Sciences| Wuhan 430072| China; 2.Graduate University of the Chinese Academy of Sciences| Beijing 100049| China; 3.Kunshan water supply (Group) Co.| Ltd| Kunshan 215300| China)〖
  • Online:2010-08-23

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。〖WTBX〗BI〖WTBZ〗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。〖

Abstract:

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 66 taxa were identified from fifteen sampling sites.Among them were 18 taxa of oligchaetes,26 taxa of chironomids,14 taxa of mollusks and 8 forms 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,〖WTBX〗BI〖WTBZ〗 bioassessment methods were fitter to apply in this region.〖

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