6dbd9c4f-1009-49b7-9be4-a1ac55b74cf5 c47ea007-ec78-473c-a161-9c8c2b8952c4 Felix Op de Hipt +49 (0)228 / 73-60710 felixodh@uni-bonn.de 2021-03-18T16:57:35 ISO 19115:2003/19139 1.0 WGS 1984 Erosion Map of the Dano Catchment as Simulated by SHETRAN, Burkina Faso, 2013-2014 2018-04-04T09:00:00 This map shows the spatial soil erosion and deposition pattern as simulated by the hydrological and soil erosion model SHETRAN. A general discussion on the creation of this map and the uncertainty is given under: http://www.mdpi.com/2073-4441/9/2/101 Felix Op de Hipt Department of Geography - University of Bonn Junior Researcher +49 (0)228 / 73-60710 Meckenheimer Allee 166 Bonn North Rhine-Westphalia 53115 Germany felixodh@uni-bonn.de https://wascal-dataportal.org/geonetwork/srv/eng/resources.get?uuid=6dbd9c4f-1009-49b7-9be4-a1ac55b74cf5&fname=Map_Felix_op_de_Hip2.png large_thumbnail png erosion soil erosion water erosion modelling map GEMET - Concepts, version 2.4 2010-01-13 geonetwork.thesaurus.external.theme.gemet soil deposition Burkina Faso Western Africa Region 2006-09-22 geonetwork.thesaurus.external.place.regions Dano catchment This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. http://creativecommons.org/licenses/by-sa/4.0/ Citation: Op de Hipt, F. (2018): Erosion Map of the Dano Catchment as Simulated by SHETRAN, Burkina Faso, 2013-2014 https://wascal-dataportal.org/geonetwork/?uuid=6dbd9c4f-1009-49b7-9be4-a1ac55b74cf5 44ecebe6-6ffd-41f4-8eff-09405ca3bb26 70000 environment -3.15 -2.85 11.00 11.35 2013-01-01 2014-12-31 1 Erosion and deposition is expressed as tons/ha/year GeoTIFF 1.0 WASCAL https://wascal-dataportal.org/geonetwork/srv/eng/file.disclaimer?uuid=6dbd9c4f-1009-49b7-9be4-a1ac55b74cf5&fname=Soil_erosion.lyr&access=private WWW:DOWNLOAD-1.0-http--download Soil_erosion.lyr Layer File https://wascal-dataportal.org/geonetwork/srv/eng/file.disclaimer?uuid=6dbd9c4f-1009-49b7-9be4-a1ac55b74cf5&fname=soilerosion.tif&access=private WWW:DOWNLOAD-1.0-http--download soilerosion.tif Data as TIFF (in WGS 84) https://daten.zef.de/geoserver/wms OGC:WMS-1.1.1-http-get-map WASCAL:WSC_soil_erosion_shetran_dano-catch_burkina-faso_ras Erosion Map of the Dano Catchment as Simulated by SHETRAN The map shows the spatial pattern of soil erosion and deposition on hillslopes as simulated by the best SHETRAN simulation for the calibration period. Erosion ranges from 1.6 to almost 0 t/ha/year and deposition from 0 to 1.8 t/ha/year. Regarding erosion 55% of the grid cells are within the range of 0.03 to <0 t/ha/year. However, given the spatial heterogeneity of the controlling factors that are considered (slope, land use, soil properties, hydrological conditions) and the complex model approach it is difficult to clearly identify erosion hot spots and to explicitly attribute these hot spots to a single factor or reason. One example in this context is the hilly area in the western part of the catchment: We assumed the highest erosion rates would be found here due to the steep slopes and the partly practiced agriculture but simulated erosion is not especially high compared with other parts of the catchment. The small erosion rates are attributed to the low simulated surface runoff due to a small drainage area of these cells. Hence, rain drop detachment may be high but surface runoff is insufficient to transport the available sediment. High erosion rates simulated close to the river channel are a result of higher surface runoff simulated in cells close to the valley bottoms as a result of larger drainage areas and overbank flow. Field observations confirm overbank flow during large events but the areas are rather characterized by deposition of fine material and not necessarily by erosion as simulated. To get a more realistic representation of the vegetation close to the rivers (gallery forests), a fifth land use type with the same properties as savannah vegetation was introduced around the river links. Though this led to lower erosion rates, it negatively affected the performance of the simulated hydrograph and was therefore discarded.