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(Article of periodic en Anglais - 2013)

Document title

The significant role of inorganic matters in preservation and stability of soil organic carbon in the Baoji and Luochuan loess/paleosol profiles, Central China

Authors(s) and Affiliation(s)

WANG C. (1) ; LI F. (1) ; SHI H. (1) ; JIN Z. (2) ; SUN X. (1) ; ZHANG F. (2) ; WU F. (2) ; KAN S. (1) ;
(1) College of Resources and Environmental Sciences, Agricultural Univ., Nanjing, CHINE
(2) State Key Lab. of Loess and Quaternary Geology, Inst. of Earth Environment, CAS, Xi'an, CHINE

Abstract

To understand the preservation time and mechanisms of soil organic carbon (SOC) under burial conditions, the distributions of total organic carbon (TOC) and stable organic carbon (StOC), and their correlations with the contents of clays and clay minerals and different forms of iron oxides were investigated in the Baoji and Luochuan loess–paleosol profiles. The results highlight that : StOC was preserved in the loess and paleosol after 375 kyr since their deposition; Kaolinite might play chemical and physical roles in the fixation of organic carbon; The TOC was highly correlated with amorphous oxides of iron (Feo) mainly affected by sorption, and complex iron (Fep)affected by complexation on SOC preservation

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2013, vol. 109 [pp. 186-194]

Bibliographic references : 29 ref.

Collation : 10 fig., 6 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2013.04.001

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