Study on Monitoring and Evaluation of Aquatic Organisms in Dongchang Lake
In order to explore the establishment of water ecological monitoring,evaluation and assessment system,improve the quality of water ecological environment,and then improve the biodiversity of lakes and reservoirs,this paper took Liaocheng Dongchang Lake as the research object,and evaluated it by Shannon-Wiener diversity index,BI biological index and BMWP index through aquatic biological organism monitoring.The species classifi-cation analysis was carried out.The results showed that in 2023,a total of 40 species of phytoplankton were moni-tored in Dongchang Lake.The species were rich.The individual distribution was uniform,and the community structure was relatively stable.Among them,cyanobacteria accounted for 57.0％;There were 18 species of zoo-plankton,with high species richness and uniform individual distribution.Rotifers accounted for 97.6％;There were 8 species of macrophytes,with high species richness and uniform individual distribution,of which monocot-yledonous plants accounted for 51.4％;There were 5 species of benthic organisms,with low species richness,rel-atively uniform individual distribution,and general community structure stability.Among them,Insect accounted for 72.1％.The BI biological index of benthic animals was 6.18,and the BMWP index was 38.The pollution tol-erance index was at a good level,indicated that the water quality of Dongchang Lake was good.This study pro-vided aquatic biological base data for the monitoring and evaluation of water ecology in Dongchang Lake,and laid a foundation for the comprehensive evaluation of water ecology.
万方数据
维普
