Response of blue-green algae habitat in Taihu Lake to climate change

In recent years,the algae bloom in Taihu Lake has become an important water pollution event and a major water safety problem,aggravated by a factor of the climate change. In order to predict the influence of future climate change on the bloom of the blue algae in Taihu Lake,and propose the adaptation strategy,a research on the relationship between the climate change and cyanobacteria habitat was carried out. Based on a lot of measured meteorological data and the climate change scenario calculations,the trend of the climate change for the recent 50 years of Taihu Lake basin is obtained: increasing in air temperature,slight decreasing in wind speed,reducing in sunshine time,increasing in rainfall and decreasing in humidity. The main impact factors of the climate change on the blue-green algae bloom in Taihu Lake are the variations in air temperature and wind speed. The risk of the blue-green algae blooms is rising by approximately 2% per 10 years,caused by air temperature increases and by about 3. 5% every 5 years on average,caused by wind speed decreases. Based on experimental responses of the blue-green algae to the sensitive factors, some countermeasures are suggested, including cutting pollution abatement,removing sediment appropriately,salvaging the blue-green algae,water diversion and drainage,and ecological restoration,etc.