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首页> 外文期刊>Computers & geosciences >Estimating sediment, nitrogen, and phosphorous loads from the Pipestem Creek watershed, North Dakota, using AnnAGNPS
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Estimating sediment, nitrogen, and phosphorous loads from the Pipestem Creek watershed, North Dakota, using AnnAGNPS

机译：使用AnnAGNPS估算北达科他州Pipestem Creek流域的沉积物，氮和磷负荷

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摘要

Agricultural pollution is a significant problem in North Dakota. Water quality in the Pipestem Creek watershed upstream of Pingree, North Dakota, USA, has been a major environmental concern amongst other adjacent watersheds within the region. The annualized agricultural non-point source (AnnAGNPS) model, a large-scale watershed model designed to predict sediment and nutrient loads, was used to evaluate non-point source pollution in a typical agricultural watershed. The best available data were assembled and used in the analysis. The model predicted runoff of 0.31 m~3/s, compared to a measured value of 0.46 m~3/s. A poor correlation was observed when comparing the model's predicted nitrogen, phosphorus, and sediment with the observed counterparts. The model's poor performance was most likely a result of the large size of the study area and the high variability in land use and management practices.
机译：农业污染是北达科他州的一个重要问题。美国北达科他州Pingree上游Pipestem Creek流域的水质一直是该地区其他邻近流域中的主要环境问题。年化农业面源（AnnAGNPS）模型是旨在预测沉积物和营养物负荷的大规模流域模型，用于评估典型农业流域中的面源污染。收集了最佳的可用数据，并将其用于分析中。该模型预测的径流量为0.31 m〜3 / s，而测量值为0.46 m〜3 / s。将模型的预测氮，磷和沉积物与观测到的对应物进行比较时，发现相关性较差。该模型的较差性能很可能是由于研究区域较大以及土地使用和管理实践的高度可变性造成的。

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