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(Article of periodic en Anglais - 2013)

Document title

Small-scale effects of annual and woody vegetation on sediment displacement under field conditions

Authors(s) and Affiliation(s)

HOFFMAN O. (1) ; YIZHAQ H. (2) ; BOEKEN B.R. (1) ;
(1) The Wyler Dept. of Dryland Agriculture, The Jacob Blaustein Inst. for Desert research, Ben-Gurion Univ. of the Negev, Sede Boqer, ISRAEL
(2) Dept. of Solar Energy and Environmental Physics, The Jacob Blaustein Inst. for Desert Research, Ben-Gurion Univ. of the Negev, Sede Boqer, ISRAEL

Abstract

The AA. examined the effects of mound-forming shrubs and annual plants on sediment dispersal at small spatial scales in the semi-arid shrubland of the northern Negev Desert of Israel. They conducted a field experiment to test the displacement of dyed sediment by wind, runoff and rain splash in 5 × 5 cm areas on shrub-mounds, placed under the canopy and on mound margins, and on the biological soil crust-covered intershrub space. As experimental treatments, they used artificial rain covers and removal of annuals and their litter. It is showed that : most sediment displacement was caused by rainsplash; overhead cover by shrub canopy had the largest reducing effect on sediment loss; Removal of low annual herbs and litter increased sediment loss in all locations; A combination of shrub, annual plants and litter reduces erosion most efficiently; Sediment loss by wind in the dry season was very small, in spite of strong winds.

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 109 [pp. 157-163]

Bibliographic references : 1 p.

Collation : 4 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2013.04.003

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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