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“南水北调来水调入密云水库调蓄工程”建成运行后,密云水库的水位上升和南水北调来水汇兑的共同作用将对密云水库的水质和水生生物产生影响,分析结果表明:调水初期机械混合作用将导致密云水库阴、阳离子降低,而氮、磷等营养元素则呈上升趋势;调水将使密云水库浮游植物种类和数量增加;水库中的大型水生植物和鱼类都将在调水初期经历减少的过程,但随着水位逐步稳定,更大的水域面积将有利于水生植物和鱼类的生长繁殖。
After the completion of operation, the combined action of the rising water level of Miyun Reservoir and the water exchange of South-to-North Water Diversion Project will affect the water quality and aquatic organisms in Miyun Reservoir. The analysis results show that: in the early period of water diversion Mechanical mixing will lead to the decrease of anion and cation in Miyun Reservoir while the nutrients such as nitrogen and phosphorus will increase; the species and quantity of phytoplankton will increase in Miyun Reservoir by water diversion; the large aquatic plants and fish in reservoir will be in tune Water initially experienced a process of decrease, but as the water level stabilized, a larger area of water would favor the growth and reproduction of aquatic plants and fish.