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首页> 外文期刊>Journal of Hydroinformatics >Geospatial-based automated watershed modeling in Garhwal Himalaya
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Geospatial-based automated watershed modeling in Garhwal Himalaya

机译：Garhwal Himalaya中基于地理空间的自动分水岭建模

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摘要

An automated GIS tool and its computational outcomes on the spatial distribution of runoff and soil erosion are presented. The developed tool, named Automated Soil Erosion Assessment Tool (ASEAT), simulates runoff and soil erosion rates based on the concept of erosion processes suggested by Morgan-Morgan-Finney (MMF) in 1984. ASEAT is provided with a user-friendly graphical user interface (GUI) to interact with the users. The computational algorithms used are made fully automated and have been developed using the ERDAS Macro Language (EML) and Spatial Macro Language (SML). The developed modelling methodology is applied to the data of an experimental watershed of Pathri Rao in the Indian lower Himalayan region. Generated spatial distribution of runoff potential and soil erosion rates for the studied watershed using ASEAT are depicted by maps. The model-computed surface runoff potential (145.63 mm) available in the watershed seems fair when compared with the runoff depth (176.07 mm) observed at the watershed outlet. The derived estimates of soil erosion are validated, albeit qualitatively, with field observations and seem reliable for making decisions on the adoption of soil erosion conservative measures in the watershed.
机译：介绍了一种自动化的GIS工具及其对径流和土壤侵蚀空间分布的计算结果。开发的工具名为自动土壤侵蚀评估工具（ASEAT），根据Morgan-Morgan-Finney（MMF）在1984年提出的侵蚀过程的概念来模拟径流和土壤侵蚀速率。ASEAT提供了用户友好的图形用户界面（GUI）与用户进行交互。所使用的计算算法是完全自动化的，并且已使用ERDAS宏语言（EML）和空间宏语言（SML）进行了开发。所开发的建模方法被应用于印度下喜马拉​​雅地区Pathri Rao实验分水岭的数据。通过地图描绘了利用ASEAT研究的流域的径流潜力和土壤侵蚀速率的空间分布。与在分水岭出口处观测到的径流深度（176.07 mm）相比，在分水岭中可用模型计算的表面径流势（145.63 mm）似乎是合理的。尽管可以定性地通过实地观察对得出的水土流失估计进行验证，对于在流域中采用水土流失保守措施做出决策似乎是可靠的。

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  • 来源
    《Journal of Hydroinformatics》 |2010年第4期|P.502-520|共19页
  • 作者

    U. C. Kothyari; rnRaaj. Ramsankaran; rnD. Sathish Kumar; rnS. K. Ghosh; rnNisha Mendiratta;

  • 作者单位

    Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India;

    rnDepartment of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India;

    rnDepartment of Hydrology, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India;

    rnDepartment of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, Uttarakhand, India;

    rnNRDMS Division, Department of Science and Technology, New Delhi 110 016, India;

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

    GIS; himalayan watershed; MMF modeling; remote sensing; runoff; soil erosion;

    机译：地理信息系统喜马拉雅分水岭;MMF建模;遥感;径流;水土流失;

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