张掖黑河湿地国家级自然保护区水质现状分析研究

Analysis of water quality in Zhangye Black River wetland national nature Reserve

2020年全年,在张掖黑河湿地国家级自然保护区选取13个监测点进行采样,分析总磷(TP)、氨氮(NH3-3)、总氮(TN)、溶解氧(DO)、五日生化需氧量(BOD5)、化学需氧量(COD)、高锰酸盐指数(Imn)等重要指标,得出张掖湿地水质现状。研究显示,张掖黑河湿地自然保护区非汛期较汛期污染程度重;污染断面重点在甘州区山丹桥和三闸二社,高台湿地公园断面次之;张掖湿地水质主要是氮磷和有机物污染,因子按超标严重程度分别为:总氮、氨氮、总磷。

In 2020, 13 monitoring points in Zhangye Black River Wetland National Nature Reserve were selected for samsolved oxygen( DO), five-day biochemical oxygen demand( BOD5), chemical oxygen demand( COD), permanganate indegree of Zhangye Black River Wetland Nature Reserve in nonflood season is more serious than that in flood season;the pollution section focuses on shandan bridge and three switchand two community in Ganzhou District, followed by Gaotai Wetland Park section;the water quality of Zhangye wetland is mainly polluted by nitrogen, phosphorus and organic matter, and the factors are total nitrogen, ammonia nitrogen and total phosphorus according to the severity of exceeding the standard.