SWAT模型简介及其在非点源污染研究中的应用

非点源污染是现代环境科学研究的热点之一，SWAT模型作为一种分布式流域尺度水文模型，能有效模拟土壤侵蚀和水土流失，地表水和地下水污染情况，进行水资源评价和管理等，是进行非点源污染模拟的有效工具。本文在参阅前人文献的基础上，就SWAT模型进行非点源污染模拟的机理，以及模型在国内外的应用情况和取得的成果进行了一些简单的介绍。

A Brief Introduction to SWAT and the Application of it in Nonpoint Source Pollution Study

Nonpoint Source（NPS） pollution is one of the hot topics in Environmental Science study. As a distributed watershed-scale hydrological model, SWAT can simulate soil erosion ,the pollution extent of surface water and groundwater ,the assessment and management of water resource,and so on. It is a very effective tool in the research of NPS pollution. Basing on the study results of other predecessors ,this paper gives a simple introduction on the principle of how SWAT simulates NPS pollution,the application of it and what progress has achived in our country and abroad.