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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Sediment deposition and pedogenesis in exclosures in the Tigray highlands, Ethiopia
Geoderma, Volume 132, No. 3-4, Year 2006
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Description
In the Tigray highlands of Northern Ethiopia, the establishment of exclosures (i.e., areas closed for grazing and agriculture) has become an important measure to combat land degradation and restore vegetative cover. Exclosures are commonly found on steep slopes and downslope from a sediment source area. In this study their sediment trapping capacity and controlling factors were investigated. Total sediment depth turned out to be related to vegetation cover, sediment source area and in some cases slope gradient. Thickness of recent, short-term (< 20 years) sediment deposits was strongly related to distance from the top edge of the closed area, slope gradient, vegetation cover and characteristics of the sediment source area. Mean sediment deposition rates ranged between 26 and 123 Mg ha- 1 yr- 1. Under influence of vegetation and sediment deposition dark soils rich in organic matter (Phaeozems) develop. In view of their high sediment trapping capacity, exclosures are highly valued as efficient soil conservation measures in the Tigray highlands. © 2005 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
Rossi, Joni
Belgium, Leuven
Ku Leuven
Poesen, Jean W.A.
Belgium, Leuven
Ku Leuven
Haile, Mitiku
Ethiopia, Makale
Mekelle University
Raes, Dirk
Belgium, Leuven
Ku Leuven
Muys, Bart M.
Belgium, Leuven
Laboratory for Physiology
Moeyersons, Jan
Belgium, Tervuren
Royal Museum for Central Africa
Deckers, Seppe
Belgium, Leuven
Ku Leuven
Statistics
Citations: 241
Authors: 9
Affiliations: 4
Identifiers
Doi:
10.1016/j.geoderma.2005.04.027
ISSN:
00167061
Study Locations
Ethiopia