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Simulating the impact of roads on hydrological responses: examples from Swedish terrain

机译：模拟道路对水文响应的影响：来自瑞典地形的示例

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摘要

In this study, the potential impacts of road topography on hydrologic responses at the watershed scale were simulated. The method considered used a geographic information system to identify road embankment locations and subsequently remove them from the baseline elevation data. Starting from both the 'with' and 'without' road elevation model, the surface and near-surface hydrological responses for 20 watersheds in Sweden were modeled in HEC-HMS under three different storm intensities. Flow duration curves (FDCs) were used to compare hydrologic responses for the different modeling scenarios under the various storm intensities. Specifically, L-moment ratios of the FDCs were calculated and their variation compared. Results showed an increase in peak flow amounts and reduction in time to peak with increased storm intensity. In addition, variations of the L-moment ratios were larger in larger watersheds. However, the impact of the roads on the modeled hydrologic responses was much smaller than anticipated and only identifiable through detailed examination of the L-moment statistical descriptors. Our findings not only highlight the potential impacts of road topography on watershed-scale hydrology (especially concerning high intensity storms) but also provide a methodology for detecting the even rather small changes that could manifest, for example, under coupled road network and climatic changes.
机译：在这项研究中，模拟了道路地形对流域尺度上水文响应的潜在影响。所考虑的方法使用了地理信息系统来识别路堤位置，然后将其从基线高程数据中删除。从“有”和“无”高程模型开始，在HEC-HMS中，在三种不同的风暴强度下，模拟了瑞典20个流域的地表和近地表水文响应。流量持续时间曲线（FDC）用于比较各种风暴强度下不同建模方案的水文响应。具体而言，计算了FDC的L矩比，并比较了它们的变化。结果表明，随着风暴强度的增加，峰值流量增加，到达峰值的时间减少。另外，在较大的流域中，L矩比的变化较大。但是，道路对模拟水文响应的影响比预期的要小得多，并且只能通过详细检查L矩统计描述符才能确定。我们的发现不仅突显了道路地形对流域尺度水文学的潜在影响（特别是与高强度风暴有关），而且还提供了一种方法来检测甚至在耦合的路网和气候变化下可能表现出的甚至很小的变化。

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  • 来源
    《Nordic hydrology》 |2016年第4期|767-781|共15页
  • 作者

    Alireza Nickman; Steve W. Lyon; Per-Erik Jansson; Bo Olofsson;

  • 作者单位

    Department of Sustainable Development, Environmental Science and Engineering, Royal Institute of Technology/KTH, SE-10044 Stockholm, Sweden;

    Department of Physical Geography, Stockholm University, SE-106 91 Stockholm, Sweden;

    Department of Sustainable Development, Environmental Science and Engineering, Royal Institute of Technology/KTH, SE-10044 Stockholm, Sweden;

    Department of Sustainable Development, Environmental Science and Engineering, Royal Institute of Technology/KTH, SE-10044 Stockholm, Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    flow duration curves; HEC-HMS; L-moment ratios; road topography;

    机译：流动持续时间曲线;HEC-HMS;L-矩比;道路地形;

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