中文摘要：

SWAT（Soil and Water Assessment Tool）模型是美国农业部开发的具有物理基础的分布式非点源模型系统,可以模拟流域尺度的多种地理过程,如产水、产沙、养分和农药等的迁移与转化,并预测不同的管理措施对流域过程的影响。SWAT模型模拟内容多,程序结构复杂,导致集成应用和模型修改的困难。本文在模型结构剖析的基础上讨论了SWAT模型的内部运行结构,列举实例给出了运行控制文件的写法。

英文摘要：

SWAT （Soil and Water Assessment Tool） is a physically based, distributed non-point pollution model system developed by USDA. It can be used to model multiple geographic processes as well as predict the impacts of different management practices on water, sediment, agricultural chemical yields and pesticide fate in a river basin scale. Due to complex structure and too many components, SWAT model is difficult to modify or to be integratively applied with other models. In this paper, the inner running structure of SWAT was discussed based on the analysis of its components, and the core configuration file using for running model was presented with an example.