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首页> 外文期刊>Journal of the American Water Resources Association >DEVELOPMENT OF NUTRIENT SUBMODULES FOR USE IN THE GRIDDED SURFACE SUBSURFACE HYDROLOGIC ANALYSIS (GSSHA) DISTRIBUTED WATERSHED MODEL
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DEVELOPMENT OF NUTRIENT SUBMODULES FOR USE IN THE GRIDDED SURFACE SUBSURFACE HYDROLOGIC ANALYSIS (GSSHA) DISTRIBUTED WATERSHED MODEL

机译：营养子模块在网格表面水文分析（GSSHA）分布式水模型中的应用

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摘要

A primary water quality problem caused by non-point source pollution (NPSP) is eutrophication, from excess nutrients in receiving water bodies. The control of nutrients arising from NPSP is difficult because the source areas can be hard to identify and typical treatment methods are infeasible due to the distributed nature of the pollutants. It may be possible to reduce nutrient related water quality problems through the restoration of highly disturbed watersheds with best management practices (BMPs). While restoration attempts may provide significant returns, they can be costly to implement and often are met with resistance in agricultural communities. Extending model results beyond the range of calibration to model future conditions such as for restoration scenarios requires the use of physically-based models that include the important processes that generate streamflow and material transport, uptake, loss, transformation, and recycling of nutrients and other material. The research and development objectives of the U.S. Army Engineer Research and Development Center (ERDC) in Vicksburg, Mississippi, are to develop a watershed assessment and management model to simulate transport, uptake, loss, transformation, and recycling of nutrients such as nitrogen and phosphorus and associated material such as sediment and organic matter. In this study we will discuss current efforts at the ERDC's Environmental Laboratory to develop a state-of-the-art watershed water quality model.
机译：由非点源污染（NPSP）引起的主要水质问题是富营养化，源于接收水体中的营养过多。由于污染物的分布特性，很难控制源极区域的养分，这是因为很难确定源区域，并且典型的处理方法也不可行。通过采用最佳管理规范（BMP）恢复高度受干扰的流域，有可能减少与养分有关的水质问题。尽管恢复尝试可能会带来可观的回报，但它们的实施成本可能很高，并且在农业社区中常常会遇到阻力。将模型结果扩展到超出校准范围的范围以对未来情况（例如恢复情景）进行建模时，需要使用基于物理的模型，其中包括产生流量和物质运输，吸收，损失，转化和养分及其他物质再循环的重要过程。位于密西西比州维克斯堡的美国陆军工程师研发中心（ERDC）的研发目标是开发一个分水岭评估和管理模型，以模拟氮，磷等养分的运输，吸收，流失，转化和再循环以及相关的物质，例如沉积物和有机物。在本研究中，我们将讨论ERDC环境实验室当前为开发最新流域水质模型所做的努力。

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