000014631 001__ 14631
000014631 037__ $$a6145
000014631 041__ $$aEnglish
000014631 100__ $$aKonz, N.
000014631 100__ $$aBaenninger, D.
000014631 100__ $$aNearing, M.
000014631 100__ $$aAlewell, C.
000014631 100__ $$aKonz, M.
000014631 245__ $$aProcess identification of soil erosion in steep mountain regions
000014631 260__ $$c2010
000014631 260__ $$b
            
000014631 490__ $$aArticle
000014631 507__ $$aMFOLL
000014631 520__ $$a<span class="pb_abstract">Mountainous soil erosion processes were investigated in the Urseren Valley (Central Switzerland) by means of measurements and simulations. The quantification of soil erosion was performed on hill slope scale (2&middot;20 m) for three different land use types: hayfields, pastures with dwarf shrubs and pastures without dwarf shrubs with three replicates each. Erosion rates during growing season were measured with sediment traps between June 2006 and November 2007. Long-term soil erosion rates were estimated based on Cs- 137 redistribution. In addition, soil moisture and surface flow were recorded during the growing season in the field and compared to model output. We chose the WEPP model (Water Erosion Prediction Project) to simulate soil erosion during the growing season. Model parameters were determined in the field (slope, plant species, fractional vegetation cover, initial saturation level), by laboratory analyses (grain size, organic matter) and by literature study. The WEPP model simulates sheet erosion processes (interrill and splash erosion processes, please note that no rill erosion occurs at our sites). Model output resulted in considerable smaller values than the measured erosion rates with sediment traps for the same period. We attribute the differences to observed random gravity driven erosion of soil conglomerates. The Cs-137 measurements deliver substantially higher mean annual erosion rates, which are most likely connected to snow cover related processes such as snow gliding and avalanche activities.<span class="pb_toc_link"><br />
000014631 653__ $$aAlps
000014631 653__ $$aerosion
000014631 653__ $$ageology
000014631 653__ $$aland use
000014631 653__ $$asoil
000014631 653__ $$asoil erosion
000014631 653__ $$aSwiss Alps
000014631 653__ $$aSwitzerland
000014631 653__ $$avegetation
000014631 653__ $$awater
000014631 650__ $$aNatural resource management
000014631 650__ $$aLand use/land cover
000014631 650__ $$aWater management
000014631 691__ $$aNatural resource management
000014631 691__ $$aLand use/land cover
000014631 691__ $$aWater management
000014631 773__ $$pHydrology and Earth System Sciences, 14, 675-686, 2010
www.hydrol-earth-syst-sci.net/14/675/2010/
000014631 8564_ $$uhttp://lib.icimod.org/record/14631/files/6145.pdf
000014631 980__ $$aARTICLE