【摘要】 基于2016年对独流减河及其主要支流的水质和沉积物调查数据,采用单因子评价法、综合指数评价法和修正的卡尔森营养指数法对独流减河及其主要支流水体和表层沉积物环境质量状况进行评价。结果显示:独流减河水质较差,属于劣V类（GB 3838—2002）,其中西大洼排干、陈台子排水河和十米河等支流水体污染最严重,主要污染因子为总氮（TN）、化学需氧量（COD）、氨氮（NH₃-N）等;水体处于富营养化状态,其中67%的采样点水体呈重度富营养化;沉积物单因子评价结果显示,各采样点的表层沉积物均达到重污染水平,其中的主要污染物为氮、磷、铬、铜和镍。更多还原

【Abstract】 Based on the investigation data of water quality and sediment quality of Duliujianhe River and its major tributaries in 2016, single-factor assessment method, composite-index assessment method, and modified Carlson trophic state index method were used to assess the environmental quality of water and surface sediment of Duliujianhe River and its major tributaries. The results show that the water quality of Duliujianhe River was bad and was worse than Grade V（GB 3838-2002）. The heavily-polluted tributaries included Xidawa Drainage River, Chentaizi Drainage River, and Shimihe River. The main pollutants were total nitrogen（TN）, ammonia nitrogen（NH₃-N）, and chemical oxygen demand（COD）. Eutrophication occurred in the whole river and 67% of the sampling sites were heavily eutrophic. Based on the results of the single-factor assessment method, the surface sediments were heavily contaminated and the major pollutants were nitrogen, phosphorus, chromium, copper, and nickel.更多还原