Relationship between phytoplankton and environment factors in Lake Hongfeng.

Phytoplankton and environmental factors were investigated quarterly from January 2011 to October 2011 in Lake Hongfeng. Results revealed that the abundanceof Pseudanabaena limnetica Lauterborn was 80% throughout the year. It was the key factor for water color change in 2011. The environmental factors such as water temperature, pH, DO were significantly related to phytoplankton abundance, but total abundance and community structure of phytoplankton were not influneed by environmental factors.