Article (Scientific journals)
Evolution of the effectiveness of stone bunds and trenches in reducing runoff and soil loss in the semi-arid Ethiopian highlands
Taye, G.; Poesen, J.; Vanmaercke, Matthias et al.
2015In Zeitschrift für Geomorphologie, 59 (4), p. 477-493
Peer Reviewed verified by ORBi
 

Files


Full Text
TayeEtAl2015_ZfG.pdf
Publisher postprint (697.45 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Soil conservation; Soil erosion; Storage capacity; Tigray; Ethiopia
Abstract :
[en] 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 (600-1,000m2) 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. © 2014 Gebr. Borntraeger Verlagsbuchhandlung, Stuttgart, Germany.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Taye, G.;  Department of Land Resources Management and Environmental Protection, Mekelle University, PO Box 231, Mekelle, Ethiopia
Poesen, J.;  Department of Earth and Environmental Sciences, KU Leuven, Celestijnenlaan, 200E, Heverlee, Belgium, Research Foundation Flanders (FWO), Brussels, Belgium
Vanmaercke, Matthias ;  Université de Liège > Département de géographie > Géographie physique et du quaternaire
Van Wesemael, B.;  Georges Lemaitre Center for Earth and Climate Research, Earth and Life Institute, Universitè Catholique de Louvain, Belgium
Martens, L.;  Department of Earth and Environmental Sciences, KU Leuven, Celestijnenlaan, 200E, Heverlee, Belgium, Research Foundation Flanders (FWO), Brussels, Belgium
Teka, D.;  Department of Land Resources Management and Environmental Protection, Mekelle University, PO Box 231, Mekelle, Ethiopia
Nyssen, J.;  Department of Geography, Ghent University, Belgium
Deckers, J.;  Department of Earth and Environmental Sciences, KU Leuven, Celestijnenlaan, 200E, Heverlee, Belgium, Research Foundation Flanders (FWO), Brussels, Belgium
Vanacker, V.;  Georges Lemaitre Center for Earth and Climate Research, Earth and Life Institute, Universitè Catholique de Louvain, Belgium
Haregeweyn, N.;  Arid Land Research Center, Tottori University, Japan
Hallet, V.;  Department of Geology, University of Namur, Belgium
Language :
English
Title :
Evolution of the effectiveness of stone bunds and trenches in reducing runoff and soil loss in the semi-arid Ethiopian highlands
Publication date :
2015
Journal title :
Zeitschrift für Geomorphologie
ISSN :
0372-8854
Publisher :
E. Schweizerbart'sche Verlagsbuchhandlung
Volume :
59
Issue :
4
Pages :
477-493
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 March 2017

Statistics


Number of views
27 (0 by ULiège)
Number of downloads
0 (0 by ULiège)

Scopus citations®
 
59
Scopus citations®
without self-citations
35
OpenCitations
 
50

Bibliography


Similar publications



Contact ORBi