辽西易旱区典型小流域农业非点源污染形成的规律

Forming Law of Agricultural Non-point Sources Pollution of Typical Watershed in Liaoxi Arid Area

以土壤水文界面过程理论为基础 ,研究土壤与其它环境介质之间的物质交换 ,尤其是土壤中的农业化学物质跨介质转换造成的非点源污染现象。以典型农业小流域为例 ,借助于模型 ,分析了辽西易旱区农业非点源污染形成的规律。着重分析了降雨—地表径流—土壤三者之间的相互作用 ,以及土壤水与地下水的相互作用。该研究对防治农业非点源污染具有重要的理论和实践意义。

Based on the theory of soil hydrological interface process, studies the transport of matter between soil and other environmental medium, especially the agricultural non-point sources pollution (ANPS) phenomenon caused by the transport of agricultural chemical in soil among different medium. Take the small typical watershed for example, with mathematical models, analyses the forming law of ANPS in Liaoxi arid area, and puts the emphasis on the interaction among raining-surface runoff-soil, and the interaction between soil water and ground water. The research result is helpful for preventing non-point sources pollution.