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Controls on a scale explicit analysis of sheet erosion

Auteur(s) et Affiliation(s)

OAKES, E.G.M.
School of Bioresources Engineering and Environmental Hydrology, Univ. KwaZulu-Natal, Scottsville, Afrique du Sud
HUGHES, J.C.
School of Environmental Sciences Soil Science, Univ. of KwaZulu-Natal, Scottsville, Afrique du Sud
JEWITT, G.P.W.
School of Bioresources Engineering and Environmental Hydrology, Univ. KwaZulu-Natal, Scottsville, Afrique du Sud
LORENTZ, S.A.
School of Bioresources Engineering and Environmental Hydrology, Univ. KwaZulu-Natal, Scottsville, Afrique du Sud
CHAPLOT, V.
IRD-BIOEMCO, School of Bioresources Engineering and Environmental Hydrology (BEEH), Univ. of KwaZulu-Natal, Scottsville, Afrique du Sud


Description :
The aim of this study was to compare sediment yields from small and large plots installed under different environmental conditions and to interpret these results in terms of the main mechanisms and controlling factors of sheet erosion. Data of runoff, sediment concentration (SC), soil loss (SL) and rainfall characteristics obtained, in the foothills of the Drakensberg, South Africa, during the 2009–2010 rainy season at the 2 spatial scales and from different soils, vegetation cover, geology and topographic conditions were used to identify the main controlling factors of sheet erosion. Results from a principal component analysis suggested that sheet erosion is mainly controlled by rainfall characteristics (rainfall intensity and amount) and soil surface features (crusting and vegetation coverage).


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2012, vol. 37, n°. 8, p. 847-854, nombre de pages : 8, Références bibliographiques : 1 p.

Date :
2012

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais
Droits :
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