利用SWAT(土壤和水评估工具)评估Hathmati流域水文和水质参数

IF 1.6 Q3 WATER RESOURCES
Payal Vinitkumar Shah, Mohd Zuned M. Shaikh, Pradeep P. Lodha
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引用次数: 0

摘要

该研究是在哈马提河上进行的,这是古吉拉特邦最大的河流之一萨巴尔马提河的主要支流。将流域的有机氮、有机磷、NO3、NH4、NO2、全氮、全磷等水质指标与河流模型的观测值进行比较。1999-2012年定标期的月流量和月硝酸盐、2013-2020年验证期的0.87和0.56,Nash-Sutcliffe效率分别为0.89和0.79。在流域内三个地点测量的水质数据与相应的模型值基本一致,但一致性因营养物质而异。土壤和水评价工具模型利用预测流域水文和水质响应的参数,忠实地复制了该农业流域的水文和水质条件。模拟的结果表明,根据流域目前的土地利用和管理做法,营养物质是水质的关键决定因素之一。应实施管理措施,以减少营养物负荷并达到流域的必要水质标准。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessing hydrological and water quality parameters in the Hathmati Watershed using the SWAT (Soil and Water Assessment Tool)
Abstract The study is conducted on the Hathmati River, which is the principal tributary of the Sabarmati River, one of Gujarat's biggest rivers. Indicators of water quality such organic N, organic P, NO3, NH4, NO2, total N, and total P were compared between the observed values in the watershed and the streamflow models. For monthly streamflow and monthly nitrate during the calibration period of 1999–2012, and for 0.87 and 0.56 for the validation period of 2013–2020, respectively, the Nash–Sutcliffe efficiency was 0.89 and 0.79. The measured water quality data at three locations in the watershed were largely compatible with their corresponding modeled values, while the agreement varied by nutrients. Using the parameters used to forecast the hydrological and water quality responses in the watershed region, the Soil and Water Assessment Tool model faithfully duplicated the hydrological and water quality conditions in this agricultural watershed. The results of the modeling indicated that nutrients are one of the key determinants with regard to the quality of the water, in accordance with the current land use and management practices in the watershed. Management practices should be implemented in order to reduce the nutrient load and meet the watershed's requisite water quality standards.
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
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