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(Article of periodic en Anglais - 2012)

Document title

Towards constraining the magnitude of global agricultural sediment and soil organic carbon fluxes

Authors(s) and Affiliation(s)

DOETTERL S. (1) ; VAN OOST K. (1) ; SIX J. (2) ;
(1) Univ. catholique Louvain, TECLIM - Georges Lemaître Centre for Earth and Climate Research, Louvain-la-Neuve, BELGIQUE
(2) Univ. of California, Dept. of Plant Sciences, Davis, ETATS-UNIS

Abstract

The aim of this study was to test the assumptions underlying existing assessments and to reduce the uncertainty associated with global estimates of agricultural soil and soil organic carbon (SOC) erosion. The AA. parameterized a simplified erosion model driven by coarse global databases using an empirical database that covers the conterminous USA. The good agreement between their model results and empirical estimates indicate that the approach presented here captures the essence of agricultural erosion at the scales of continents and that it may be used to predict the significance of erosion for the global carbon cycle and its impact on soil functions. It is showed that erosion-induced changes in topsoil SOC content are significant at a global scale (an average SOC loss of 22% in 50 years) and agricultural soils should therefore be considered as dynamic systems that can change rapidly

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2012, vol. 37, no6 [pp. 642-655]

Bibliographic references : 2 p.

Collation : 8 fig., 7 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3198

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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