藻量对湖泊富营养化监测指标的影响探讨

A Discussion about the Impact of Algae Biomass on the Monitoring Index of Lake Eutrophication

对滇池外海藻量较为集中的区域,用塑料薄膜围一封闭的水体,避免水量交换。在水面下分3层(0.5m、1.0m、1.5m)进行不同采样点和不同水深的水质监测,得出藻类在水中的纵向分布规律。通过进行滤除藻前、后水样的分析,发现藻类的存在会导致水样监测结果偏高。在此基础上对富营养化水体监测应注意的问题进行了分析与讨论。

A closed water body is fenced with of Dianchi Lake to prevent the water exchange the plastic membrane in the algae concentrated area of the outer part Different sampling and monitoring points are set up at the three water stratifications （0. 5m, 1.0m and 1.5m） to find out the vertical distribution of the algae in the water. The water samples are analyzed before and after removing the algae by screen. We notice that the algae in the water would make the water monitoring results higher than the standards. Therefore some points of attention are identified for monitoring the entrophicated water body.