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PORTAIL D'INFORMATION GÉOGRAPHIQUE

Organic carbon and nitrogen in soil particle-size aggregates under dry tropical forests from Guanacaste, Costa Rica - Implications for within-site soil organic carbon stabilization

Auteur(s) et Affiliation(s)

JIMÉNEZ, J.J.
Pyrenean Inst. of Ecology (IPE), Consejo Sup. de Investigaciones Científicas (CSIC), Jaca, Espagne
Carbon Management and Sequestration Center, School of Environment and Natural Resources, Ohio State Univ., Columbus, Etats-Unis
LORENZ, K.
Carbon Management and Sequestration Center, School of Environment and Natural Resources, Ohio State Univ., Columbus, Etats-Unis
LAL, R.
Carbon Management and Sequestration Center, School of Environment and Natural Resources, Ohio State Univ., Columbus, Etats-Unis


Description :
The AA report results on the soil organic carbon (SOC) pool (0–50 cm) from a chrono-sequence of dry tropical forest (dTf) of increasing age and a yearly burned ancient pasture in the “Sector Santa Rosa” at the “Área de Conservación Guanacaste” (ACG) in northwestern Costa Rica, where intense human induced land-use modifications has occurred during the past century. The AA. quantified the depth distribution of SOC concentration down to 50-cm and in physically separated mineral soil fractions, as these data are scanty from the dTf. Additional objectives were to identify the relationship with selected soil physical and chemical properties, including stabilized SOC fractions by means of multivariate ordination methods. Soils under dTf at Santa Rosa store a considerable amount of SOC with potentially large CO2 emissions if this ecosystem is not preserved.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2011, vol. 86, n°. 3, p. 178-191, nombre de pages : 14, Références bibliographiques : 111 ref.

Date :
2011

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

Langue :
Anglais
Droits :
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