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(Article of periodic en Anglais - 2012)

Document title

Are organo-mineral complexes and allophane content determinant factors for the carbon level in Chilean volcanic soils ?

Authors(s) and Affiliation(s)

GARRIDO E. (1 2) ; MATUS F. (3 4) ;
(1) Programa de Doctorado en Ciencias Agrarias, Escuela de Graduados, Univ. Austral, CHILI
(2) Fac. de Ciencias Agrarias y Forestales, Univ. Católica, Maule, CHILI
(3) Dep. de Ciencias Químicas y Recursos Naturales, CHILI
(4) Scientific and Technological Bioresource Nucleus (BIOREN-UFRO), Univ., La Frontera, CHILI

Abstract

This study established the relationship among different soil properties such Al-, Fe-complexes and allophane content on soil C levels in Chilean volcanic soils as well as the effect of soil pH on metal–OM complexes. A total of 45 soil samples from 15 soil pedons were sampled. The soil samples were analysed for the content of soil organic C, allophane, clay, silt and Na- pyrophosphate extraction (Alp, Fep, Cp) and soil pH (water). The AA. examined the relationship between the soil C content and soil properties using simple and multiple linear regressions. The silt and clay contents explained little, while the allophane, soil pH and Alp explained most of the soil C variation. In contrast to the top soil, SOM in the subsoil was saturated with Alp and Fep. Soil pH and metal : soil C ratio regulates SOM–allophane association in the soil profile

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2012, vol. 92 [pp. 106-112]

Bibliographic references : 29 ref.

Collation : 4 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2011.12.003

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