北江干流水生生态环境现状调查与评价

Investigation and evaluation of aquatic ecological environment of Beijiang main stream

于2016年12月2日对北江干流浮游植物、浮游动物和底栖生物的调查。采用Shannon-Wiener多样性指数和均匀度评价水质污染程度,采用浮游植物密度评价水质营养状况,从而得知北江干流的水质处于中污染状态,生境质量差,出现富营养状态。

A survey of phytoplankton,zooplankton and benthic organisms in the Beijiang River on December2,2016was conducted.The Shannon-Wiener diversity index and evenness were used to evaluate the degree of water pollution.Phytoplankton density was used to evaluate the water quality and nutritional status.The results showed that the water quality of the Beijiang River was in a polluted state and the quality of habitat was poor and eutrophication occurred.