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圆明园作为我国著名的名胜古迹之一,吸引了大量中外游客参观游览。园区内水体主要由清河污水处理厂再生水水进行补给,景观水体的封闭的特性使水体极易富营养化,严重影响景观水体的可供观赏性,圆明园在防治富营养化上实施了多种生态修复措施,并取得了一定的效果。通过对水体长达八个月的监测,分析圆明园来水水质与圆区水环境水质的变化规律,研究不同植物群落对水体的净化能力,并对园区水质做出评价。监测结果发现,水质在园区循环过程中得到提升,总磷,COD,氨氮都已达到地表水Ⅳ类以上标准,但是总氮浓度过高使水质总体不达标。
Yuanmingyuan, one of China's famous historical sites, attracts a large number of Chinese and foreign tourists to visit. The water in the park is replenished mainly by reclaimed water from Qinghe Sewage Treatment Plant. The closed nature of the landscape water makes the water easily eutrophic and seriously affects the ornamental water quality of the landscape. Yuanmingyuan implemented a variety of ecological systems on the control of eutrophication Repair measures, and achieved some results. Through the monitoring of water body for eight months, the variation regularity of incoming water in Yuanmingyuan and water quality in circular area was analyzed to study the purification ability of different plant communities on water body, and to evaluate the water quality of the park. The monitoring results showed that the water quality was improved during the recycling process in the park. Total phosphorus, COD, and ammonia nitrogen have all reached the Ⅳ above standard of surface water. However, the total nitrogen concentration is too high to make the water quality not up to standard.