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Effects of land use, slope gradient, and soil and water conservation structures on runoff and soil loss in semi-arid Northern Ethiopia

Auteur(s) et Affiliation(s)

TAYE, G.
Dept. of Land Resources Management and Environmental Protection, Univ., Mekelle, Ethiopie
POESEN, J.
Dept. of Earth and Environmental Sciences, Katholieke Univ., Leuven, Belgique
Georges Lemaitre Center for Earth and Climate Research, Earth and Life Inst. Univ. Catholique de Louvain, Louvain-la-Neuve, Belgique
Dept. of Earth and Environmental Sciences, Katholieke Univ., Leuven, Belgique
Research Foundation Flanders, Brussel, Belgique
TEKA, D.
Dept. of Land Resources Management and Environmental Protection, Univ., Mekelle, Ethiopie
DECKERS, J.
Dept. of Earth and Environmental Sciences, Katholieke Univ., Leuven, Belgique
GOOSSE, T.
Dept. of Earth and Environmental Sciences, Katholieke Univ., Leuven, Belgique
MAETENS, W.
Dept. of Earth and Environmental Sciences, Katholieke Univ., Leuven, Belgique
NYSSEN, J.
Dept. of Geography, Univ., Ghent, Belgique
HALLET, V.
Dept. of Geology, Univ., Namur, Belgique
Arid Land Research Center, Univ., Tottori, Japon


Description :
The aim of this study was to investigate the effects of typical land-use types, slope gradients, and different soil and water conservation (SWC) structures on runoff and soil loss at the runoff-plot scale. Six runoff measuring sites, corresponding to three slope gradients, were established for cropland (cultivated land for annual crop production) and rangeland (heavily grazed land on hillslopes with high rock-fragment cover) at Mayleba catchment in Tigray, Ethiopia. SWC structures tested were stone bunds, trenches, and stone bunds with trenches, in addition to control plots. In total, 21 large runoff plots (with lengths of 60 to 100 m ) were monitored daily for runoff production and soil loss during the main rainy season (July-September) in 2010. It is highlighted that the effects of SWC structures on runoff production and soil loss are considerable; hence, it is crucial to consider these effects for optimal design of water-harvesting schemes such as micro-dams that collect and store surface runoff for irrigation development in the Ethiopian highlands.


Type de document :
Article de périodique

Source :
Physical geography, issn : 0272-3646, 2013, vol. 34, n°. 3, p. 236-259, nombre de pages : 24, Références bibliographiques : 3 p.

Date :
2013

Editeur :
Pays édition : Royaume-Uni, Abingdon, Taylor and Francis

Langue :
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)