Abstract:

Temporal and spatial distributions of bluegreen algae density and Chlorophyll were discussed according to emergency monitoring data of the Meiliang Lake measured by Wuxi environmental monitoring centre with Multiparameter Water Quality Sonde YSI6600v2 in 2008 from April to November.Data indicated that obvious temporal and spatial variations were found for bluegreen algae density and chlorophyll.Bluegreen algae density and Chlorophyll reached the highest value in September and August respectively，and reached the highest in the north zone of the lake，and the lowest in the Shazhu zone.The results showed that water temperature was a major limiting factor for the algae growth in summer Meiliang Lake，and the spatial distribution of algae was greatly influenced by the “southeast wind” and “The project of water diversion from the Yangtze River to Taihu Lake”.It was easy to see that the focus of attention was needed in the algal blooms of Augst and September in Meiliang Lake，and the Shazhu as an important drinking water sources compared with other zones in Meiliang Lake was very reasonable and the right choice.〖