福建省山仔水库浮游植物特征与水体富营养状况分析

Analysis of Phytoplankton Characteristic and Eutrophication in Shanzi Reservoir, Fujian Province

采用浮游植物指示法评价了福州省山仔水库2005年不同季节水体的富营养状况，结果表明：冬、春季库区水体处于中一富营养水平，夏季发生水华微囊藻（Microcystis flos-aquae）“水华”，水体处于富营养水平，秋季水体处于中营养水平．由于浮游植物的生长状况受到多因素的影响，有必要进一步结合其他评价方法对整个水体的富营养状态做出综合判断．

Using phytoplankton indication method, this paper evaluated and analyzed the status of eutrophication in Shanzi reservoir in the four seasons of 2005. The results showed that the trophic state of the water was mesotropher to light eutropher in winter and spring seasons. A ＂water bloom＂ of Microeystisflos-aquae could be identified in summer season and the trophic state was eutropher in summer and mesotropher in autumn. Since the growth of phytoplankton is effected by a variety of factors, in order to give an integrated judgment about the trophic status of the whole water body, the further combination and integration of multiple evaluation methods are needed.