Analysis of Plankton Community Structure and Key Environmental Factors for Baiyangdian Lake
As plankton is sensitive to environmental changes,it is often used as indicator organisms for en-vironmental monitoring.In September 2021,a survey was carried out on plankton and key water environ-mental factors of Baiyangdian Lake using redundancy analysis and correlation analysis.A total of 47 spe-cies of zooplankton were detected in Baiyangdian Lake and the dominant species were nauplius,Cyclops vicinus,Brachionus calyciflorus Pallas,Keratella cochlearis,Polyarthra trigla,Keratella valga,Bos-mina longirostris,Asplanchna brightwel.There were 143 species of phytoplankton identified with Chlo-rella vulgaris,Cyclotella meneghiniana,Phormidium and Microcystis pulverea as the dominant species.Analysis results showed that there was no significant correlation between zooplankton diversity indices and environmental factors,but the correlations were significant between phytoplankton diversity indices and the total nitrogen content,pH value,chemical oxygen demand and nitrite nitrogen content,respectively.The pH value and chemical oxygen demand were the main environmental factors affecting zooplankton community distribution,while the nitrite nitrogen content,pH value and total nitrogen content were the main environmental factors affecting phytoplankton community distribution.The pH value,chemical oxy-gen demand,nitrite nitrogen content,total nitrogen content and plankton diversity indices can be served as important indicators to evaluate the water quality of Baiyangdian Lake.
NETL
NSTL
万方数据
