Arid
DOI10.1127/zfg/2015/0166
Evolution of the effectiveness of stone bunds and trenches in reducing runoff and soil loss in the semi-arid Ethiopian highlands
Taye, Gebeyehu1; Poesen, Jean2,3; Vanmaercke, Matthias2,3; van Wesemael, Bas4; Martens, Lotte2,3; Teka, Daniel1; Nyssen, Jan5; Deckers, Jozef2,3; Vanacker, Veerle4; Haregeweyn, Nigussie6; Hallet, Vincent7
通讯作者Taye, Gebeyehu
来源期刊ZEITSCHRIFT FUR GEOMORPHOLOGIE
ISSN0372-8854
出版年2015
卷号59期号:4页码:477-493
英文摘要

Soil and Water Conservation (SWC) structures, in particular stone bunds and conservation trenches, have been extensively installed in Tigray since the 1980’s. As the effectiveness of stone bunds and trenches in reducing runoff and soil loss depends on their retention capacities, it can be expected that this effectiveness declines over time due to infilling with sediment. However, little is known about the rate of this decline during subsequent years. We therefore assessed the effectiveness of SWC structures for two land use types, three slope classes and during three consecutive rainy seasons. Rainfall, runoff and soil loss were measured using 21 large (600-1,000 m(2)) runoff plots at Mayleba catchment. Results show that all studied SWC structures are more effective in reducing soil loss than runoff. Conservation trenches are generally more effective in reducing runoff and soil loss than stone bunds. However, due to their infilling with sediment, their effectiveness quickly declines over time. By the end of the third rainy season, their effectiveness was reduced to about one third of their initial effectiveness. The effectiveness of stone bunds remained fairly constant during three consecutive rainy seasons. These findings have important implications, as they demonstrate that many of the installed SWC structures (especially in rangelands) are only very effective for short periods (one to two years). Regular sediment removal from conservation trenches is therefore crucial to preserve their effectiveness over longer periods.


英文关键词Tigray soil erosion soil conservation storage capacity
类型Article
语种英语
国家Ethiopia ; Belgium ; Japan
收录类别SCI-E
WOS记录号WOS:000367128200004
WOS关键词WATER CONSERVATION MEASURES ; NORTHERN ETHIOPIA ; LAND-USE ; TIGRAY HIGHLANDS ; ROCK FRAGMENTS ; SEDIMENT YIELD ; CROP YIELD ; EROSION ; VARIABILITY ; SLOPES
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/190851
作者单位1.Mekelle Univ, Dept Land Resources Management & Environm Protect, Mekelle, Ethiopia;
2.Katholieke Univ Leuven, Dept Earth & Environm Sci, B-3001 Heverlee, Belgium;
3.Res Fdn Flanders FWO, Brussels, Belgium;
4.Catholic Univ Louvain, Georges Lemaitre Ctr Earth & Climate Res, Earth & Life Inst, Louvain, Belgium;
5.Univ Ghent, Dept Geog, B-9000 Ghent, Belgium;
6.Tottori Univ, Arid Land Res Ctr, Tottori, Japan;
7.Univ Namur, Dept Geol, Namur, Belgium
推荐引用方式
GB/T 7714
Taye, Gebeyehu,Poesen, Jean,Vanmaercke, Matthias,et al. Evolution of the effectiveness of stone bunds and trenches in reducing runoff and soil loss in the semi-arid Ethiopian highlands[J],2015,59(4):477-493.
APA Taye, Gebeyehu.,Poesen, Jean.,Vanmaercke, Matthias.,van Wesemael, Bas.,Martens, Lotte.,...&Hallet, Vincent.(2015).Evolution of the effectiveness of stone bunds and trenches in reducing runoff and soil loss in the semi-arid Ethiopian highlands.ZEITSCHRIFT FUR GEOMORPHOLOGIE,59(4),477-493.
MLA Taye, Gebeyehu,et al."Evolution of the effectiveness of stone bunds and trenches in reducing runoff and soil loss in the semi-arid Ethiopian highlands".ZEITSCHRIFT FUR GEOMORPHOLOGIE 59.4(2015):477-493.
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