苏州澄湖周边水体浮游藻类调查与分析

Investigation and analysis of planktonic algae in the surrounding water of Suzhou Chenghu Lake

本文于2023年对苏州澄湖周边水体开展浮游藻类调查,采集并鉴定浮游藻类8门11纲23目39科70属96种,其中绿藻门种类最丰富,蓝藻门与硅藻门次之。9月时,以假鱼腥藻等丝状藻类为主的蓝藻门密度大幅上升。总体上,澄湖周边水体浮游藻类群落生物多样性良好,但应警惕丝状藻类可能形成的隐形水华,可采取综合治理措施,改善水生态环境质量。

In 2023,an investigation of planktonic algae was conducted in the surrounding water of Chenghu Lake in Suzhou,resulting in the collection and identification of 96 species from 70 genera,39 families,23 orders,11 classes,and 8 phyla.Among them,the Chlorophyta exhibits the highest species richness,followed by the Cyanobacteria and Diatomaceae.In September,the density of cyanobacteria,mainly filamentous algae such as Pseudanabaena,increased significantly.Overall,the planktonic algae community in the vicinity of Cheng Lake has good biodiversity,but attention should be paid to the potential formation of cryptic algal blooms by filamentous algae.Comprehensive management measures can be taken to improve the quality of the aquatic environment.