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(Article of periodic en Anglais - 2013)

Document title

Soil organic matter of Iberian open woodland rangelands as influenced by vegetation cover and land management

Authors(s) and Affiliation(s)

PULIDO-FERNÁNDEZ M. (1) ; SCHNABEL S. (1) ; LAVADO-CONTADOR J.F. (1) ; MIRALLES MELLADO I. (2) ; ORTEGA PÉREZ R. (3) ;
(1) GeoEnvironmental Research Group, Univ. de Extremadura, Cáceres, ESPAGNE
(2) Arid Zone Experimental Station, Spanish National Research Council, Almería, ESPAGNE
(3) Dept. of Physical Geography, Catholic Univ., Louvain-la-Neuve, BELGIQUE

Abstract

Soil properties were analysed from 22 environmental units selected from 10 farms distributed throughout Extremadura, representative of different rangeland types : dehesas (wooded rangelands), scrublands of Retama sphaerocarpa and treeless grasslands. Some of the soil samples were used for a chemical fractioning of soil carbon. Farmer interviews were conducted in order to quantify livestock densities and stocking rates and to assess land management. Results showed that soils are generally shallow, acidic, with low soil organic carbon contents and poor in nutrients. Areas with higher soil carbon stocks corresponded to units encroached by Retama sphaerocarpa shrubs and dehesas. Soil organic carbon (SOC) was relatively high beneath the tree canopy and less concentrated and reduced in variability with depth. A multivariate analysis performed and other results suggest that land mismanagement and excessive stocking rates could be related with the appearance of bare soil areas, therefore negatively affecting soil organic matter by removing the sensitive topsoil materials through water erosion

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2013, vol. 109 [pp. 13-24]

Bibliographic references : 1 p.

Collation : 7 fig., 8 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2013.05.002

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