Quantifying the performance of automated GIS-based geomorphological approaches for riparian zone delineation using digital elevation models
Quantifying the performance of automated GIS-based geomorphological approaches for riparian zone delineation using digital elevation models
复制标题
使用数字高程模型量化基于 GIS 的自动化地貌方法用于河岸区域划分的性能
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
F. Peñas
中科院分区：
文献类型：
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作者：
Diego Fernández;J. Barquín;Mario Álvarez;F. Peñas
河岸带的划定是管理河流和邻近地区的一个中心问题；然而，用于划定河流和邻近地区的标准仍在争论之中。被一场50年一遇的洪水淹没的地区已被视为河岸地区的最佳水文描述符。这些详细的水文信息通常只适用于有洪水风险的人口稠密地区。在这项工作中，我们利用数字高程模型(DEM)，通过两种不同的基于地理信息系统的地貌方法，创建了几个泛滥平原表面，试图在流域尺度上为河网寻找具有水文意义的潜在河岸带。目的通过对不同河流地貌类型的50年汛面重合面积和超限面积的分析，对两种地貌模型的性能进行量化。
Riparian zone delineation is a central issue for managing rivers and adjacent areas; however, criteria used to delineate them are still under debate. The area inundated by a 50-yr flood has been indicated as an optimal hydrological descriptor for riparian areas. This detailed hydrological information is usually only available for populated areas at risk of flooding. In this work we created several floodplain surfaces by means of two different GIS-based geomorphological approaches using digital elevation models (DEMs), in an attempt to find hydrologically meaningful potential riparian zones for river networks at the river basin scale. Objective quantification of the performance of the two geomorphologic models is provided by analysing coinciding and exceeding areas with respect to the 50-yr flood surface in different river geomorphological types.