Abstract
为了了解漂浮植物(凤眼莲和大藻)的大量生长对水口库区水体环境造成的影响,于2001-2002年、2004年6月、9月对福建闽江水口库区水环境状况进行调查监测.结果表明:漂浮植物的大量繁殖造成水口库区水体的透明度、硝酸氮、氨氮、总氮、总磷、细菌总数指标均有明显的升高,而库区的pH、溶解氧、高锰酸盐指数明显下降,浮游生物数量减少、浮游生物多样性指数降低,浮游生物种群结构发生变化,浮游植物优势种类和浮游动物主要种类呈现小型化.;The physicochemical and biological characteristics of water were studied from 2001 to 2004 in Shuikou impoundment. The results showed ： The growth of Water Hyacinth (Eichhomia crassipes) and Water Lettuce (Pis-tia stratiotes) caused the increase of concentrations of transparency、nitrate、ammonium、total nitrogen、total phosphorus and total bacteria, the decrease of the values of pH,DO,permanganate index、total plankton and species Diversity of plankton reduced, step toward miniaturization of plankton volume.
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