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首页> 外文期刊>Hydrology and Earth System Sciences >Quantifying the performance of automated GIS-based geomorphological approaches for riparian zone delineation using digital elevation models
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Quantifying the performance of automated GIS-based geomorphological approaches for riparian zone delineation using digital elevation models

机译：使用数字高程模型量化基于GIS的自动化河岸带划定地貌方法的性能

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摘要

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.
机译：划定河岸带是管理河流和邻近地区的中心问题。但是，用于描述它们的标准仍在争论中。 50年洪水泛滥的地区已被指示为河岸地区的最佳水文描述。通常，只有在有洪灾风险的人口稠密地区才能获得这种详细的水文信息。在这项工作中，我们使用数字高程模型（DEM），通过两种不同的基于GIS的地貌方法，创建了多个洪泛区表面，以期为流域范围内的河网寻找具有水文意义的潜在河岸带。通过分析不同河流地貌类型中50年洪水面的重合和超出范围，可以客观量化两个地貌模型的性能。

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