湖泊（包括天然湖泊和水库）水华一直是水环境治 理中的热门课题。为了对湖泊和河流的水体特征进行比较，先指出湖泊等封闭半封闭水体水 华频发的原因，然后结合实例，介绍相关的水华治理手段，并重点评述几种水华的生态治理 措施。

Algaebloom in lake and reservoir has become a hot topic in water environment treatment. In this article, the mai n characteristics caused by the algaebloom in lake and natu ral river are compared,and the observed data show that the algae bloom in lake a nd reservoir is more often than that in rivers. Some conventional methods to tre at water environment are introduced,and some ecological restoration measures are emphatically presented.