李娣;李旭文;牛志春;张军毅;徐东炯;李继影;陈明;陈志芳;曹毅;李朝;卜伟;于红霞;

• 1:南京大学环境学院污染控制与资源化研究国家重点实验室
• 2:江苏省环境监测中心
• 3:无锡市环境监测中心站
• 4:常州市环境监测中心

摘要(Abstract)：

为了解江苏省湖泊底栖动物群落结构和多样性并研究其对水环境质量变化的响应,于2012年春秋两季对江苏省16个湖泊51个采样点湖泊底栖动物群落结构与多样性以及湖泊综合营养状态指数进行调查,分析水质指标与底栖动物指数间Pearson相关关系。结果表明,江苏省16个湖泊营养状态指数范围为35.5~66.4,其中约81.2%的湖泊处于轻度-中度富营养状态,表明水质从好到中度污染;湖泊底栖动物优势种为寡毛类的霍甫水丝蚓(Limnodrilus hoffmeisteri),优势度为13.0%;香浓多样性指数(Shannon-Wiener diversity index)范围为0.00~2.20,级别范围由极贫乏到较丰富状态,表明水质污染程度从重度到轻度污染。从全省尺度看,水质评价结果与生物学(香浓多样性指数、Pielou均匀度指数和Biotic Index(BI)指数)评价结果存在一定差异。与历史数据相比,江苏省湖泊底栖动物清洁敏感物种减少甚至消失,总体群落结构趋于小型化。16个湖泊水体总氮和总磷与底栖动物密度呈显著负相关,而综合营养状态指数与底栖动物指数(香浓多样性指数、Pielou均匀度指数和BI指数)间关系不显著。上述研究结果表明综合营养状态指数无法完全客观反映湖泊水生态健康状况,因此需要综合水质、水文、水生生物、生境状况等因素发展新的评价指标体系。

关键词(KeyWords)： 江苏省;富营养化;底栖动物;多样性

Abstract:

Keywords:

基金项目(Foundation): 国家水体污染控制与治理科技重大专项(2013ZX07502001-005);; 江苏省太湖水环境综合治理科研课题(TH2014207)

作者(Author): 李娣;李旭文;牛志春;张军毅;徐东炯;李继影;陈明;陈志芳;曹毅;李朝;卜伟;于红霞;

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DOI:

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