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首页> 外文期刊>Sensor Letters: A Journal Dedicated to all Aspects of Sensors in Science, Engineering, and Medicine >Comparative Study of Soil and Water Assessment Tool and AnnAGNPS for Prediction of Runoff in a Plain Irrigation District of North China
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Comparative Study of Soil and Water Assessment Tool and AnnAGNPS for Prediction of Runoff in a Plain Irrigation District of North China

机译：北方平原灌区土壤水评估工具与AnnAGNPS预报径流的比较研究

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摘要

This study aims to access and compare two distributed hydrological models, the Soil and Water Assessment Tool (SWAT) and the Annualized Agricultural Non-point Source (AnnAGNPS) model. The models are used to calculate runoff in the Fenhe Irrigation District where the catchment area is an agricultural plain region in North China. On the basis of the analysis of the theory and components of SWAT and AnnAGNPS, we built model databases using GIS and other interrelated observed data. Both models were calibrated for a six-year period (1996-2001) and validated using a five-year period (2002-2006) by comparing simulated and observed monthly and annual runoff at the outlet of the field. In the long-term continuous simulation for the calibration and validation period, both models generally provided good correlation and model efficiency for simulating surface runoff: relative error (RE) of the annual runoff, as well as correlation coefficient (R~22) and Nash-Suttcliffe simulation efficiency coefficient (E_(ns)) of the monthly runoff measurements satisfy the evaluation requirements. Comparatively, the results of SWAT simulation show better agreement with measured data, while AnnAGNPS registers comparatively large errors in the years with increasing annual rainfall or months with rising amount of monthly rainfall and irrigation water. Such conditions increase the overall error. Both models, however, were utilized for runoff simulation of the plain irrigation district in North China.
机译：本研究旨在访问和比较两种分布式水文模型，即土壤和水评估工具（SWAT）和年度农业面源（AnnAGNPS）模型。该模型用于计算the河灌区的径流量，该地区的集水区是华北的一个农业平原地区。在对SWAT和AnnAGNPS的理论和组成部分进行分析的基础上，我们使用GIS和其他相互关联的观测数据建立了模型数据库。两种模型均经过六年校准（1996-2001年），并通过五年（2002-2006年）通过比较实地出口处模拟和观察到的月径流量和年径流量进行验证。在校准和验证期的长期连续模拟中，两个模型通常都提供了很好的相关性和模型效率来模拟地表径流：年径流的相对误差（RE）以及相关系数（R〜22）和Nash每月径流测量的Suttcliffe模拟效率系数（E_（ns））满足评估要求。相比之下，SWAT模拟的结果与实测数据显示出更好的一致性，而AnnAGNPS在年降水量增加的年份或月雨量和灌溉水量增加的月份中记录了相对较大的误差。这种情况会增加总体误差。但是，这两种模型都用于华北平原灌溉区的径流模拟。

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