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(Article of periodic en Anglais - 2014)

Document title

Storage and depth distribution of organic carbon in volcanic soils as affected by environmental and pedological factors

Authors(s) and Affiliation(s)

MORA J.L. (1) ; GUERRA J.A. (2) ; ARMAS-HERRERA C.M. (3) ; ARBELO C.D. (4) ; RODRÍGUEZ-RODRÍGUEZ A. (4) ;
(1) Dept. de Ciencias Agrarias y del Medio Natural, Fac. de Veterinaria, Univ., Zaragoza, ESPAGNE
(2) Gestión del Medio Rural de Canarias, Santa Cruz de Tenerife, ESPAGNE
(3) INRA unité AgroImpact de Laon-Mons, Pôle du Griffon, Barenton-Bugny, FRANCE
(4) Dept. de Biología Animal y Edafología y Geología, Fac. de Biología, Univ., La Laguna, ESPAGNE

Abstract

It has been recognised that volcanic soils, particularly Andosols, can store large amounts of soil organic carbon (SOC). The AA. analysed the SOC contents in relation to intrinsic (soil type and relevant soil properties : texture and pH) and extrinsic factors (climate, parent material, relief), and studied the patterns of SOC distribution with depth by fitting the SOC contents to different curve models. SOC storage was controlled by the interaction of climatic (rainfall), time (substrate age), topographic (slope) and biotic (plant-mediated) factors. The results indicate that under humid conditions, low pH and anoxia within microaggregates can enhance SOC storage. The distributions of root carbon and SOC appeared to be closely interrelated, suggesting a major role of roots in the supply of organic matter and the lack of significant bioturbation. The depth distribution of SOC was best fitted by the quadratic, cubic and power models

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2014, vol. 123 [pp. 163-175]

Bibliographic references : 1 p.

Collation : 8 fig., 5 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2014.08.004

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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