太湖蓝藻暴发原因及其控制措施

Discussion on Reasons and Control Measures of Blue-green Algae Fast Growth in Lake Tai

根据近16年的太湖(梅梁湖区域)水质和生物资料,结合近年来的藻类生长趋势及区域污染物入湖状况,探讨了近年来夏季梅梁湖蓝藻暴发的原因。主要原因是:湖体水质下降,营养物增多,富营养化发展迅猛;特定的地理条件和不利的水文气象条件及生态环境遭破坏等是蓝藻暴发的外部因素;不合理施肥及沿湖经济发展过快是蓝藻暴发的加速剂。最后,根据梅梁湖区域的现状,提出了7点具体的相应控制措施。

Based on chemical and biological water quality monitoring data for 16 years, and in connection with the trend of algae growth and the status of inflow pollutants, to approach the reasons of blue-green algae fast growth in Mailiang Area of Lake Tai recently. The main reasons were as follows: decline in water quality, increment of lake nutrients, developing of eutrophication, special geographical and hydrometeorological conditions, damage of ecological environment and inadequate fertilization etc. Finally, seven suggestions have been put forward.