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首页> 外文期刊>Journal of the American Water Resources Association >FRAMEWORK AND TOOL FOR RAPID ASSESSMENT OF STREAM SUSCEPTIBILITY TO HYDROMODIFICATION
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FRAMEWORK AND TOOL FOR RAPID ASSESSMENT OF STREAM SUSCEPTIBILITY TO HYDROMODIFICATION

机译：快速评估加氢反应流敏感性的框架和工具

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摘要

Changes in streamflow and sediment loading associated with urban development have the potential to exacerbate channel erosion, and result in impacts to wetland, riparian, and stream habitats, as well as infrastructure and property losses. The typical "one-size-fits-all" management prescription of flow control with retention or detention basins has not been wholly effective, pointing to a need for improved management strategies and tools for mitigating the impacts of "hydromodification." We present an approach for developing screening-level tools for assessing channel susceptibility to hydromodification, and describe a novel tool for rapid, field-based assessments of the relative susceptibility of stream segments. The tool is based on the results of extensive field surveys, which indicate that susceptibility is the driver of channel response, not the magnitude of urbanization. A combination of relatively simple, but quantitative, field indicators are used as input parameters for a set of decision trees that follow a logical progression in assigning categorical susceptibility ratings to the channel segment being assessed. The susceptibility rating informs the level of data collection, modeling, and ultimate mitigation efforts that can be expected for a particular stream segment type. The screening approach represents a critical first step toward tailoring hydromodification management strategies and mitigation measures to different stream types and geomorphic settings.
机译：与城市发展有关的河流流量和泥沙负荷变化可能加剧河道侵蚀，并导致对湿地，河岸和河流生境的影响，以及基础设施和财产损失。具有保留或滞留池的流量控制的典型“一刀切”管理处方并没有完全有效，这表明需要改进的管理策略和工具来减轻“加氢改造”的影响。我们提出了一种开发筛选级工具的方法，以评估通道对加氢改性的敏感性，并描述了一种新颖的工具，用于快速，基于现场的流段相对敏感性的评估。该工具基于大量现场调查的结果，这些结果表明，敏感性是渠道响应的驱动力，而不是城市化程度的驱动力。相对简单但定量的现场指示器的组合用作一组决策树的输入参数，这些决策树在将分类敏感性等级分​​配给要评估的通道段时遵循逻辑进程。敏感度等级告知了特定流段类型可以预期的数据收集，建模和最终缓解措施的水平。筛选方法代表了针对不同的河流类型和地貌环境定制加氢改性管理策略和缓解措施的关键的第一步。

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