缓冲带在农业非点源污染防治中的应用

Study on pollution control of agricultural nonpoint source by means of buffer strips

论述了缓冲带防治非点源污染的机理和效果 ,分析了影响缓冲带功能的各个因素。缓冲带能有效地控制土壤与土壤养分的流失 ,其建设与管理在整个生态环境建设中具有重要地位。目前国内外的研究主要集中于缓冲带对径流中营养物质氮和磷的吸收上 ,对较大区域环境水质影响的研究不曾多见。为达到防治非点源污染的更好效果 ,应对缓冲带的设计及各种缓冲带合理配置与布局作更深入的研究 。

The progresses and effect of prevention and cure on agricultural nonpoint source pollution by means of buffer strips were summarized and the factors influencing the functions of buffer strips were analyzed. Buffer strips could efficiently control the loss of soil and nutriment, while its construction and management was essential in eco\|enivronment construction. Most of the research works focused on the absorption of nitrogen and phosphorus and it is scarce to research the influence on the quality of water in large region. In order to meet better effective control to agricultural nonpoint source pollution, the design\,arrangement and distribution of variable buffer strips needed to be intensively inqured.\;