滇池水化学特征与叶绿素a含量的相关性研究

Frequent occurrence of cyanobacteria bloom caused by eutrophication is one of the major problems of water environment in China. Water cations affect the growth of cyanobacteria. By sampling in different regions in Dianchi Lake, water chemical characteristics and the content of chlorophyll a were measured, correlation analysis between the water chemical characteristics and chlorophyll a content were done. The results showed that water chemical characteristics and chlorophyll a content in Dianchi Lake was closely related. The concentrations of Ca2+ and K+ in the serious cyanobacteria bloom region were significantly higher than other regions, and they were significantly positive correlation with the content of chlorophyll a, which may contribute to the growth of cyanobacteria or group formation. In serious cyanobacteria bloom region it presented a very high ratio of nitrogen to phosphorus, its effects on the growth of cyanobacteria or group formation remains to be further studied.