Representation of agricultural conservation practices with SWAT
Representation of agricultural conservation practices with SWAT
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DOI：
10.1002/hyp.6890
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发表时间：
2008-07-30
影响因子：
3.2
通讯作者：
Arnold, Jeff G.
中科院分区：
文献类型：
--
作者：
Arabi, Mazdak;Frankenberger, Jane R.;Arnold, Jeff G.
评估农业保护措施对水质影响的模型研究结果在很大程度上取决于用于代表这些措施的数值程序。本文开发并评估了一种使用土壤和水评估工具（SWAT）来表示几种农业保护实践的方法。表征程序包括识别受实践实施影响的水文和水质过程，选择代表受影响过程的 SWAT 参数，进行敏感性分析以确定模型输出对所选参数的敏感性，根据保护实践的功能调整所选参数，并验证 SWAT 结果的合理性。这种表示程序通过美国中西部印第安纳州一个小型农业流域的案例研究得到了证明。目前工作中开发的方法可以应用于其他流域模型，这些模型采用类似的基础方程来表示水文和水质过程。版权所有 (C) 2007 John Wiley & Sons, Ltd.
Results of modelling studies for the evaluation of water quality impacts of agricultural conservation practices depend heavily on the numerical procedure used to represent the practices. Herein, a method for the representation of several agricultural conservation practices with the Soil and Water Assessment Tool (SWAT) is developed and evaluated. The representation procedure entails identifying hydrologic and water quality processes that are affected by practice implementation, selecting SWAT parameters that represent the affected processes, performing a sensitivity analysis to ascertain the sensitivity of model outputs to selected parameters, adjusting the selected parameters based on the function of conservation practices, and verifying the reasonableness of the SWAT results. This representation procedure is demonstrated for a case study of a small agricultural watershed in Indiana in the Midwestern USA. The methods developed in the present work can be applied with other watershed models that employ similar underlying equations to represent hydrologic and water quality processes. Copyright (C) 2007 John Wiley & Sons, Ltd.