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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
environmental science
Runoff on slopes with restoring vegetation: A case study from the Tigray highlands, Ethiopia
Journal of Hydrology, Volume 331, No. 1-2, Year 2006
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Description
Daily runoff depths from 28 plots (5 m × 2 m) recorded during a 2-year period in the semi-arid to subhumid highlands of Tigray were analyzed to study the effect of vegetation restoration in exclosures and to identify other factors influencing runoff production. Plots are distributed over three study sites and located in different land use types and on different combinations of soil type, vegetation cover and slope gradient. Runoff was found to be significantly reduced when a degraded area is allowed to rehabilitate after closure. Runoff depth is significantly correlated with event variables such as rain depth, rainfall intensity, storm duration and soil moisture content. Total vegetation cover is the most important plot variable explaining about 80% of the variation in runoff coefficients through an exponential decay function. Also the runoff generating rainfall threshold has a positive correlation with total vegetation cover. Runoff was found to be negligible when the vegetation cover exceeds 65%. Other important variables affecting runoff production in the study sites are soil organic matter, soil bulk density, litter cover and slope gradient. © 2006 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Descheemaeker, Katrien K.E.
Belgium, Leuven
Ku Leuven
Nyssen, Jan
Belgium, Leuven
Ku Leuven
Ethiopia, Makale
Mekelle University
Poesen, Jean W.A.
Belgium, Leuven
Ku Leuven
Raes, Dirk
Belgium, Leuven
Ku Leuven
Haile, Mitiku
Ethiopia, Makale
Mekelle University
Muys, Bart M.
Belgium, Leuven
Ku Leuven
Deckers, Seppe
Belgium, Leuven
Ku Leuven
Statistics
Citations: 214
Authors: 7
Affiliations: 2
Identifiers
Doi:
10.1016/j.jhydrol.2006.05.015
ISSN:
00221694
Study Design
Case Study
Study Approach
Qualitative
Study Locations
Ethiopia