官厅水库富营养化的水生生态特征评价

对官厅水库进行浮游植物(种类分布、细胞数和生物量)、叶绿素α、水体初级生产力、底栖大型无脊椎动物的种类和密度分布以及水质的理化特性等进行了研究。结果表明,官厅水库某些指标达到或超过富营养化水平,西库的水质比东库明显恶化。官厅水库水质恶化主要受永定河水污染的影响。其次,大坝前网箱养鱼也是影响水质的因素之一。与1982年水质污染比较的结果表明,官厅水库水质富营养化的发展速度是惊人的。

AN EVALUATION OF LIMNO-ECOLOGICAL CHARAC TERISTICS FOR THE EUTROPHICATION OF GUANTING RESERVOIR

of 14 biological, chemical and physical parameters determined for water quality of Guanting Reservoir, 10 were found to be either up to or exceeded the eutrophic levels. The same are true for Carlson's TSI (SD) and TSI (COD) for all sampled locations and TSI(chl. a) at station 1,2 and 3. The TSI (TP), on the other hand, remains at oligotrophic level. The water quality of the reservoir is primarily influenced by polluted water from Yongding River and the net cage for raising carps in front of the dam. The water quality was also compared with previous records.