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Improving the GIS-DRP Approach by Means of DelineatingRunoff Characteristics with New Discharge Relevant Parameters
Department of Soil Science, University Trier, 54286 Trier, Germany
Department of Geography, University of Koblenz-Landau, 56070 Koblenz, Germany
* Author to whom correspondence should be addressed.
Received: 6 December 2012; in revised form: 15 January 2013 / Accepted: 22 January 2013 / Published: 31 January 2013
Abstract: At present it is common to use geographic information system (GIS) applications to assess runoff generation. One of these GIS-based tools to generate maps of dominant runoff processes is the so called GIS-DRP approach. The tool, which has been developed mainly based on agricultural areas, uses commonly available input data like a digital elevation model (DEM), geological information as well as land use information. The aim of this study is to test, validate and improve this GIS-DRP method for forested and silviculture areas. Hence, soil-hydrologic investigations and several mapping techniques of dominant runoff processes were conducted on 25 test-plots in four forested catchments in Rhineland-Palatinate (Germany) and the Grand Duchy of Luxembourg. By comparing the results of the mapping techniques and those of the test plots, weak points in the original GIS-DRP method were detected. Subsequently, it was possible to enhance the GIS-DRP approach by incorporating new discharge relevant parameters like topsoil sealing, extreme weather events and semipermeability of the substratum. Moreover, the improved GIS-DRP approach can be widely used in different landscapes and for different fields of application. The adapted method can now support foresters and decision makers in forestry planning, answer questions concerning the landscape water balance and peripheral water retention or provide extra information for sustainable forest planning in times of a changing climate.
Keywords: GIS approach; runoff generation; dominant runoff processes; soil-hydrology
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Hümann, M.; Müller, C. Improving the GIS-DRP Approach by Means of DelineatingRunoff Characteristics with New Discharge Relevant Parameters. ISPRS Int. J. Geo-Inf. 2013, 2, 27-49.
Hümann M, Müller C. Improving the GIS-DRP Approach by Means of DelineatingRunoff Characteristics with New Discharge Relevant Parameters. ISPRS International Journal of Geo-Information. 2013; 2(1):27-49.
Hümann, Marco; Müller, Christoph. 2013. "Improving the GIS-DRP Approach by Means of DelineatingRunoff Characteristics with New Discharge Relevant Parameters." ISPRS Int. J. Geo-Inf. 2, no. 1: 27-49.