湿地对农业非点源污染的去除效应

Effectiveness of Wetlands in Removal of Non-Point Pollutants from Agricultural Source

综合论述了湿地去除农业非点源污染的机理及影响营养物质净化的因素,指出农业非点源污染是引起地表水富营养化的主要因素,湿地生态系统作为农田与水体之间的一个过渡地带,可通过土壤吸附、植物吸收、微生物转化等一系列物理、化学和生物学作用降解地表径流中的氮磷营养物质,减轻地表水的污染。

Non-point pollutants from agricultural source are main factors leading to the eutrophication of surface water. As a buffer strip between fields and watershed, wetland ecosystems have the potential to reduce N and P nutrients by soil adsorption, aquatic plant assimilation and microbe transformation. This paper discusses the removal mechanism of non-point pollutants from agricultural source and the related factors affected the retention and release of nutrients.