Reference : Determining RUSLE P- and C-factors for stone bunds and trenches in rangeland and crop...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/225988
Determining RUSLE P- and C-factors for stone bunds and trenches in rangeland and cropland, North Ethiopia
English
Taye, G. [Department of Land Resources Management and Environmental Protection, Mekelle University, P.O. Box 231, Mekelle, Ethiopia, Department of Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E, Leuven, Belgium]
Vanmaercke, Matthias mailto [Université de Liège - ULiège > Département de géographie > Géographie physique et du quaternaire >]
Poesen, J. [Department of Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E, Leuven, Belgium]
Van Wesemael, B. [Georges Lemaitre Center for Earth and Climate Research, Earth and Life Institute, Universite Catholique de Louvain, Louvain-la-Neuve, Belgium]
Tesfaye, S. [Department of Land Resources Management and Environmental Protection, Mekelle University, P.O. Box 231, Mekelle, Ethiopia, Soil Physics and Land Management Group, Wageningen University, P.O. Box 47, Wageningen, Netherlands]
Teka, D. [Department of Land Resources Management and Environmental Protection, Mekelle University, P.O. Box 231, Mekelle, Ethiopia, Georges Lemaitre Center for Earth and Climate Research, Earth and Life Institute, Universite Catholique de Louvain, Louvain-la-Neuve, Belgium]
Nyssen, J. [Department of Geography, Ghent University, Ghent, Belgium]
Deckers, J. [Department of Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E, Leuven, Belgium]
Haregeweyn, N. [International Platform for Dryland Research and Education, Tottori University, Tottori, Japan]
2018
Land Degradation and Development
John Wiley and Sons Ltd
29
3
812-824
Yes (verified by ORBi)
International
1085-3278
1099-145X
[en] Ethiopian Highlands ; RUSLE ; Digital storage ; Erosion ; Land use ; Sediment transport ; Soils ; Water conservation ; Revised universal soil loss equations ; Sediment deposition ; Semi-arid environments ; Soil and water conservation ; Soil erosion ; Temporal variation ; Soil conservation
[en] The implementation of soil and water conservation (SWC) measures in the Ethiopian Highlands is a top priority to reduce soil erosion rates. However, the effectiveness of these measures for different hillslope gradients and land use conditions remains poorly understood. This study addresses this knowledge gap by determining support practice (P) and cover-management (C) factors of the Revised Universal Soil Loss Equation for commonly used SWC structures in semi-arid environments. The factor values were calculated on the basis of soil loss data collected with 21 large runoff plots installed in rangeland and cropland sites. The P- and C-factors were calculated following the recommended procedures. Results show P-factors ranging from 0.32 to 0.74 for stone bunds, from 0.07 to 0.65 for trenches, and from 0.03 to 0.22 for stone bunds with trenches. Reduced storage capacities due to sediment deposition resulted in significant declines of the effectiveness of SWC structures over time. For example, the average P-factor value for trenches increased from 0.1 in the first year after installation to 0.51 after 3 years. C-factor values ranged from 0.23 to 0.82 in rangeland and from 0.03 to 0.35 in cropland. For rangeland, this large variability is due to vegetation cover changes caused by grazing. In cropland, C-factors vary with crop types and tillage practices. The results of this study not only aid in modelling and quantifying the short-term impacts of SWC structures on soil erosion rates but also highlight the importance of considering temporal variations of the effectiveness of SWC measures. Copyright © 2017 John Wiley & Sons, Ltd.
KU Leuven; Resthaven Incorporated; CANR, College of Agriculture and Natural Resources; Felix Scholarship; Society of the Friendly Sons of St. Patrick for the Relief of Emigrants from Ireland
http://hdl.handle.net/2268/225988
10.1002/ldr.2814

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