典型污染物在崇明东滩不同类型湿地的分布规律

目的]了解湿地植被类型以及土壤质地的不同导致其对氯、磷等营养盐的吸收、净化能力的差异。方法]以长江口崇明东滩不同类型湿地土壤（不同的土壤质地、湿地中的植物类型）为研究对象，采用分析湿地土壤中氮、磷等污染物质的含量方法。结果]研究不同农业模式下氯、磷等农业污染物在不同类型湿地土壤中的分布特征，从而评价不同类型湿地土壤对氮、磷等污染物净化能力，表明不同类型湿地土壤对内源农业污染具有不同的吸收净化功能。结论]堤内经济作物种植模式下的污染源氮磷含量高于养鱼业，粘质土壤对氮磷污染物的去除能力总体高于沙质土壤。研究结果对于湿地的保育、修复和优化。以及今后人工湿地的设计和运行提供了理论依据。

Research on the Distribution Rule of the Typical Pollutants in the Different Types of Wetlands in Chongming Island

Objective] It was understood that the different types of wetland vegetations and soil textures led to the difference in its capability in the absorption and purifying of nitrogen,phosphorus and other nutrients.Method] The different types of wetland soil(the soil texture and plant type in wetland) in the eastern part of Chongming Island in the Yangtze River being taken as experimental object,the content of nitrogen,phosphorus and other pollutants in the wetland soil were analyzed.Results] The distribution...