Erosion hazard due to water

The usage-dependent, average annual erosion hazard due to water for 2007 is calculated according to DIN 19708 with the general soil removal equation ABAG for arable land. For the calculation, the factors R=lowfall intensity (long-year average summer precipitation of the period 1971-2000, DWD), K= soil erodibility (k-factors of the BÜK 1000, BGR, 2005), L=hang length, S=hang slope (DGM 25, BKG, 2007) and C=fruit succession factor (as crop species groups, agricultural structure survey 2007, FDZ Nord). For the ordering method (floor processing) it is assumed as a comparison scenario that the entire arable area of Germany is processed in conventional, reversing ordering. Accordingly, the scenario represents the “WORST case”. The cross-cutting in the form of the P factor was not taken into account due to the scale and viewing space. The calculation was carried out nationwide for a mesh size of 50 meters and C factors at the level of the natural area, because data at the municipal level, depending on the structure of the company, are subject to a secret reservation and there is a risk that a uniform basis of evaluation can then be used. For this reason, mean values for the natural spatial units (BFN, as of 2008) were calculated, which are shown here. The presentation was presented only for arable land determined on the basis of the use-differentiated soil overview map for Germany (BÜK 1000 N, BGR, 2007). The methodological approach and further results are the UBA text 16/2011 (http://www.umweltbundesamt.de/publikationen/wirkungen-klimaaenderungen-auf-boeden): “Impacts of climate change on soils — Studies on the effects of climate change on soil erosion by water” Wurbs, D. and Steininger, M.