湖(库)浮游动物数量指标与水质评价标准关系研究——以湖南省5个湖(库)为例

Relationship between Index of Zooplankton Amount in Lake(Reservoir) and Evaluation Standards for Water Quality——Taking Five Lakes(Reservoirs) in Hunan Province as Example

对湖南省内不同水质功能代表性湖(库)的浮游动物群落组成,浮游动物数量以及优势种进行了调查研究;采用化学评价指数Pb/n、Shannon-Wiener多样性指数、Simpson优势度指数分别对目标水体的污染程度进行了评价。评价结果显示:利用浮游动物多样性指数评价湖(库)水质污染程度与常规的化学综合污染指数评价结果基本吻合;利用浮游动物数量评价水质污染程度具有较高的可信度亦能间接反映水质污染程度;在此基础上,界定了湖南省湖库浮游动物数量及优势种与水质污染程度的限值。

It surveyed the constitute of zooplankton community, the zooplankton amount and the zooplankton dominant species in different representative water qualities and functions lakes (reservoirs) in Hunan province, then using chemical evaluation index Pb/n, Shannon-Wiener diversity index and Simpson dominance index to evaluate the pollution degree of surveyed water body. The evaluation results showed that the results of water quality pollution degree evaluated by zooplankton diversity index method was accordant with that evaluated by conventional chemical comprehensive pollution index method; using zooplankton amount to evaluate water quality pollution degree had relatively better reliability, and it also can indirectly reflect water quality pollution degree. Then, the zooplankton amount and dominant species and the limit value for water quality pollution degree in lake (reservoir) in Hunan Province were determined.