【摘要】 调查了长江口北支湿地环境现状,分析评价了长江口北支湿地的环境质量。指出,长江口北支湿地有着得天独厚的地理位置和自然条件,是世界范围内极具代表性十分重要的湿地,拥有丰富的水资源、动植物资源、滩涂资源等。近年来,由于长江上游河水质量下降,启东和海门经内陆河流向长江的城市生活污水、启东沿江建设的工业带,对北支口湿地环境质量产生了较大的影响。调查结果表明,长江口北支口水域主要污染物为COD、氨氮等,其污染程度呈现出以下规律:平水期(污染)>丰水期(污染)>枯水期(污染)。长江口北支区域陆地土壤中主要污染物为重金属元素镉、铅、锌以及滴滴涕,其中镉与滴滴涕达《土壤环境质量标准》(GB15618-1995)中三级标准,其他指标达一级标准。更多还原

【Abstract】 The environment status of wetland in north branch of Changjiang estuary was investigated, its environmental quality was evaluated. Wetland in north branch of Changjiang estuary was one of the most important wetlands in world because of its distinguished geographic location and natural resources, there had plenty of water resources, biological resources and beach resources. In these years, because the water quality of Changjiang River and the municipal sewage and industrial construction, the wetland’s environmental quality was decreased. The investigation result indicated that the main pollutants in water in north branch of Changjiang estuary was COD, NH3-N etc. The main pollution in soil was Cd, Pb, Zn and DDT.更多还原