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PORTAIL D'INFORMATION GÉOGRAPHIQUE

Organic carbon enrichment in sediments : Effects of rainfall characteristics under different land uses in a Mediterranean area

Soil erosion and the global carbon cycle

Auteur(s) et Affiliation(s)

Soil and Water Conservation Dept., CEBAS, CSIC, Univ., Murcia, Espagne
LÓPEZ, J.
Soil and Water Conservation Dept., CEBAS, CSIC, Univ., Murcia, Espagne
ALMAGRO, M.
Soil and Water Conservation Dept., CEBAS, CSIC, Univ., Murcia, Espagne
Soil and Water Conservation Dept., CEBAS, CSIC, Univ., Murcia, Espagne
CASTILLO, V.
Soil and Water Conservation Dept., CEBAS, CSIC, Univ., Murcia, Espagne
ORTIZ, R.
Dep. of Agricultural Chemistry, Geology and Soil Science, Univ., Murcia, Espagne
Soil and Water Conservation Dept., CEBAS, CSIC, Univ., Murcia, Espagne
KUHN, N.J.
Dep. of Environmental Sciences, Univ., Basel, Suisse
VAN OOST, K.
Dep. de Géographie, Univ. catholique, Louvain-la-Neuve, Belgique
CAMMERAAT, E.
Inst. for Biodiversity and Ecosystem Dynamics, Univ., Amsterdam, Pays-Bas


Description :
The study area was located in Cehegin in the northwest of the province of Murcia at an altitude that ranges from 600 to 800 m.a.s.l. The results of an experiment to evaluate the effect of rainfall characteristics on organic carbon (OC) losses and on the type of particles mobilised by erosion under natural rainfall and under different land uses (non-disturbed forested area, and a non-irrigated olive cropland) at plot scale are presented. Labile (particulate organic carbon, POC) and stable (mineral associated organic carbon, MOC) carbon pools were measured in soil and sediments. OC in soil aggregates explained the effect of rainfall on carbon mobilisation. The results showed that OC enrichment ratios were higher in olive than in forest in events of low intensity and that the total eroded OC was higher in olive than in forest in events of high intensity.


Type de document :
Article de monographie

Source :
Catena (Giessen), issn : 0341-8162, 2012, vol. 94, p. 36-42, nombre de pages : 7, Références bibliographiques : 48 ref.

Date :
2012

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais
Droits :
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