Mots-clés
Belgique Cycle du carbone Encroûtement Erosion des sols Erosion hydrique Géochimie Géotextile Loess Propriétés du sol Simulation de pluie Sol cultivé Belgium Carbon cycle Cultivated land Duricrust Geochemistry Geotextile Loess Rainfall simulation Soil erosion Soil properties Water erosion Bélgica Ciclo del carbono Encostramiento Erosión de los suelos Erosión hídrica Geoquímica Loess Propiedades del suelo Simulacíon de lluvia Suelo cultivadoEffects of interrill erosion, soil crusting and soil aggregate breakdown on in situ CO2 effluxes
Auteur(s) et Affiliation(s)
BREMENFELD, S.
Geographisches Inst., Univ., Köln, Allemagne
FIENER, P.
Geographisches Inst., Univ., Köln, Allemagne
Indo-German Centre for Sustainability, Indian Inst. of Technology Madras, Chennai, Inde
GOVERS, G.
Physical and Regional Geography Research Group, Katholieke Univ., Leuven, Belgique
Description :
A set of rainfall simulations were carried out on bare loess-burden soil with different antecedent soil moisture content. All treatments were compared with controls protected from rain drop impact using a fine-meshed geotextile. As expected, runoff and sediment delivery was significantly larger on bare compared to covered soils, while surface runoff and sediment delivery increased (in most cases) with rising antecedent soil moisture as well as rainfall duration. Crust thickness increased with antecedent soil moisture and rainfall intensity and was in general smaller for the controls. However, variations in crust thickness did not result in significant differences in in situ measured CO2 effluxes. Also the destruction of the soil crust after 6 to 7 days of measurements did not have a significant effect. This leads to the conclusion that crusting and interrill erosion has no or only a minor effect on in situ CO2 effluxes.
Type de document :
Article de périodique
Source :
Catena (Giessen), issn : 0341-8162, 2013, vol. 104, p. 14-20, nombre de pages : 7, Références bibliographiques : 41 ref.
Date :
2013
Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)