Arid
DOI10.1002/ldr.2814
Determining RUSLE P- and C-factors for stone bunds and trenches in rangeland and cropland, North Ethiopia
Taye, Gebeyehu1,3; Vanmaercke, Matthias2; Poesen, Jean3; Van Wesemael, Bas4; Tesfaye, Samuale1,5; Teka, Daniel1,4; Nyssen, Jan6; Deckers, Jozef3; Haregeweyn, Nigussie7
通讯作者Taye, Gebeyehu
来源期刊LAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
EISSN1099-145X
出版年2018
卷号29期号:3页码:812-824
英文摘要

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.


英文关键词Ethiopian Highlands land use RUSLE soil and water conservation soil erosion
类型Article
语种英语
国家Ethiopia ; Belgium ; Netherlands ; Japan
收录类别SCI-E
WOS记录号WOS:000428447600037
WOS关键词SOIL LOSS EQUATION ; LAND-USE ; WATER CONSERVATION ; RAINFALL EROSIVITY ; TIGRAY HIGHLANDS ; SEDIMENT YIELD ; EROSION ; RUNOFF ; MODEL ; DEGRADATION
WOS类目Environmental Sciences ; Soil Science
WOS研究方向Environmental Sciences & Ecology ; Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/211473
作者单位1.Mekelle Univ, Dept Land Resources Management & Environm Protect, POB 231, Mekelle, Ethiopia;
2.Univ Liege, Dept Geog, Clos Mercator 3, B-4000 Liege, Belgium;
3.Katholieke Univ Leuven, Dept Earth & Environm Sci, Celestijnenlaan 200E, B-3001 Leuven, Belgium;
4.Catholic Univ Louvain, Georges Lemaitre Ctr Earth & Climate Res, Earth & Life Inst, B-1348 Louvain La Neuve, Belgium;
5.Wageningen Univ, Soil Phys & Land Management Grp, POB 47, NL-6700 AA Wageningen, Netherlands;
6.Univ Ghent, Dept Geog, B-9000 Ghent, Belgium;
7.Tottori Univ, Int Platform Dryland Res & Educ, Tottori, Japan
推荐引用方式
GB/T 7714
Taye, Gebeyehu,Vanmaercke, Matthias,Poesen, Jean,et al. Determining RUSLE P- and C-factors for stone bunds and trenches in rangeland and cropland, North Ethiopia[J],2018,29(3):812-824.
APA Taye, Gebeyehu.,Vanmaercke, Matthias.,Poesen, Jean.,Van Wesemael, Bas.,Tesfaye, Samuale.,...&Haregeweyn, Nigussie.(2018).Determining RUSLE P- and C-factors for stone bunds and trenches in rangeland and cropland, North Ethiopia.LAND DEGRADATION & DEVELOPMENT,29(3),812-824.
MLA Taye, Gebeyehu,et al."Determining RUSLE P- and C-factors for stone bunds and trenches in rangeland and cropland, North Ethiopia".LAND DEGRADATION & DEVELOPMENT 29.3(2018):812-824.
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