IGB

Connexion

(Article of periodic en Anglais - 2014)

Document title

Modeling wind erosion flux and its seasonality from a cultivated sahelian surface : A case study in Niger

Authors(s) and Affiliation(s)

PIERRE C. (1) ; BERGAMETTI G. (2) ; MARTICORENA B. (2) ; ABDOURHAMANE TOURÉ A. (3) ; RAJOT J.-L. (4) ; KERGOAT L. (1) ;
(1) Géosciences Environment Toulouse (GET), UMR 5563, IRD, Univ. Toulouse, UPS (OMP), CNRS, Toulouse, FRANCE
(2) Lab. Interuniversitaire des Systèmes Atmosphériques, LISA, Créteil, FRANCE
(3) Univ. Abdou Moumouni, Jeune Equipe Associée à l'IRD, Anthropisation et dynamique Eolienne (JEAI ADE), Dept. de Géologie, Niamey, NIGER
(4) IRD Bioemco, UMR IRD/UPMC/CNRS/UNS/UPEC/AgroParisTech, Bondy, FRANCE

Abstract

A wind erosion model is tested in this study to check the capacity to reproduce observations collected over a millet field and a neighboring bare plot in southwestern Niger during a three-year period. Observations of sediment horizontal fluxes and of vegetation growth and decay show that most of the eroded mass is due to major events occurring at the end of the dry season and at the beginning of the rainy season for the millet field, while erosion also occurs during the dry season for the bare soil plot. Horizontal erosion fluxes were computed with and without obstacles and compared to the measurements. Simulations were found in a good agreement with erosion measurements for both bare and millet plots, in terms of temporal dynamics, reproduction of the major events and annual quantities. Modeling is therefore able to represent anthropogenic impacts on wind erosion over typical Sahelian surfaces

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2014, no122 [pp. 61-71]

Bibliographic references : 1 p.

Collation : 8 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2014.06.006

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28790414 : Permanent link - XML version
Powered by Pxxo