关键词: 巢湖水华, 底栖动物, 时空分布, 水生生态环境, 治理效果

Abstract: Adoption of the method of field investigation, the recent algae bloom in Chaohu Lake outbreak status and Chaohu Lake benthic animals the temporal and spatial distribution were analyzed. The results showed that:algal blooms in the western half of the lake outbreak frequency is far higher than the eastern half of the lake, located in the South Feihe River Chaohu Lake in the northwest part is the outbreak of cyanobacteria accumulation area, the East will continue to decrease.Benthic animals showed the eastern half of the lake is in the western half of Lake much, and clam less snails become more and more, the distribution characteristics and algal blooms caused by ecological destruction. The sampling survey results reflect the western half of Zoobenthos in the lake and bloom outbreak frequency distributions were in the opposite in 2014. The eastern half of the lake due to the bloom outbreak frequency and low and benthic fauna distribution without obvious correlation.In recent years, Chaohu Lake has increased the intensity of governance and water quality has improved, but the distribution of benthic animals did not show a significant change in the aquatic environment, we should increase the intensity of ecological environment in Chaohu Lake.

Key words: Algaebloom in Chaohu Lake, benthic animal, temporal and spatial distribution;aquatic ecological environment;governance effect