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(Article of periodic en Anglais - 2013)

Document title

Soil crusting impact on soil organic carbon losses by water erosion

Authors(s) and Affiliation(s)

MAÏGA-YALEU S. (1 2) ; GUIGUEMDE I. (1) ; YACOUBA H. (2) ; KARAMBIRI H. (2) ; RIBOLZI O. (3) ; BARY A. (1) ; OUEDRAOGO R. (5) ; CHAPLOT V. (4) ;
(1) Lab. of Analytical Chemistry, Radiochemistry and Electrochemistry (LACARE), Univ., Ouagadougou, BURKINA FASO
(2) Lab. of Hydrology and Water Resources, International Inst. for Water and Environmental Engineering, BURKINA FASO
(3) Géosciences Environment Toulouse (GET), UMR 5563, IRD, Univ. Toulouse, UPS (OMP), CNRS, Toulouse, FRANCE
(4) IRD-BIOEMCO c/o School of Agricultural, Earth & Environmental Sciences, Univ. KwaZul-Natalu, Scottsville, AFRIQUE DU SUD
(5) Lab. of Physico Chemistry and Technology of Materials (LPCTM), Univ., Ouagadougou, BURKINA FASO

Abstract

This study was conducted in Tougou Catchment (northwest of Burkina Faso), characterized by sandy soils with varying types of surface crusts. The 4 different crust types studied were : structural crusts (STRU), which were found under cultivated soils, which were plowed annually; perennial desiccation crusts (DES), gravel (GRAV) and erosion (ERO) crusts, generally found in the degraded semi-arid savannas. Water and sediment samples were collected from the runoff plots after every rainfall event (n = 10) of the 2011 rainy season. The sediment samples were analyzed for organic carbon (OCsed), while the water samples were examined for dissolved organic carbon (DOC). This study pointed out a significant relationship between soils crusting on SOC erosion. It showed that the formation of loose and sandy crusts provides greater SOC protection from water erosion, which in turn may improve SOC stabilization and associated soil functions, such as soil fertility, water-holding capacity and sequestration of atmospheric carbon

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2013, vol. 107 [pp. 26-34]

Bibliographic references : 41 ref.

Collation : 6 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.2013.03.006

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