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Spatial distribution of fallout and lithogenic radionuclides controlled by soil carbon and water erosion in an agroforestry South-Pyrenean catchment Ghent University
The mineral composition of soils and weathering processes are known to control the natural radioactivity of soils but research on the influence of water erosion and of main soil properties in the spatial variability of lithogenic and fallout radionuclides remains little investigated in heterogeneous agroecosystems with complex landscape. An extensive study was conducted to determine the mass activities of fallout (Cs-137, Pb-210(ex)) and ...
Surface roughness effects on runoff and soil erosion rates under simulated rainfall Ghent University
Soil surface roughness is identified as one of the controlling factors governing runoff and soil loss. Yet, most studies pay little attention to soil surface roughness. In this study, we analyzed the influence of surface roughness on runoff and soil erosion rates. Bulk samples of a silt loam soil were collected and sieved to 4 aggregate sizes: 0.003-0.012, 0.012-0.02, 0.02-0.045, 0.045-0.1 m. The aggregates were packed in a 0.60 by 1.2 m soil ...
Integrated solutions for combating gully erosion in areas prone to soil piping : innovations from the drylands of Northern Ethiopia Ghent University KU Leuven
Soil erosion and sediment yield in Mediterranean geoecosystems. Scale issues, modelling and understanding. KU Leuven
Soil is a precious natural resource and erosion of soil has important on -site and off-site impacts such as reduced food-, fiber- and fuel produc tion, increased flooding and sedimentation of streams and reservoirs. Es pecially in dryland areas like the Mediterranean the negative effects of erosion can be devastating. The study of soil erosion has long been con centrated at the scale of experimental plots and hillslopes. However, in creasingly ...
Spatially distributed modelling of soil erosion and sediment yield at regional scales in Spain KU Leuven
Initiated by the need to quantify erosion rates and the impacts of global changes on erosion, several attempts have been made to apply erosion models at regional scales. However, these models have often been directed towards on-site soil erosion estimates, emphasising sheet and rill erosion processes, and disregarding gully erosion, channel erosion and sediment transport. These models are therefore of limited use for the assessment of sediment ...
Use of ASTER-date for a soil erosion risk model application, Chios island (Greece) Ghent University
ASTER-satellite data provide useful information for a soil erosion risk model application. An orthorectified FCC and a DEM are the results of a digital photogrammetric restitution. An elevation model can be used to calculate slope angles and the drainage area of each location. So the sensitivity for erosion due to the topographic situation is estimated. In the Mediterranean, rainfall is often of an orographic origin. A linear regression equation ...
Assessment of long-term Holocene soil erosion rates in Polish loess areas using sedimentary archives from closed depressions KU Leuven
Copyright © 2018 John Wiley & Sons, Ltd. Soil erosion is a particularly important problem in the loess areas of Central Europe. Numerous studies of past and present soil erosion based on colluvial sediments have so far been conducted. The main problem is the fact that colluvia usually do not represent the complete sedimentation record. Closed depressions (CDs) collect all colluvial sediments from their catchment, therefore, constitute ...