Leroux Yann, Janeau Jean-Louis. (1997). Caracterizacion hidrodinamica de un suelo volcanico endurecido del Ecuador (cangahua), influencia de los estados de superficie. In :
Zebrowski Claude (ed.), Quantin Paul (ed.), Trujillo G. (ed.), Villamar M.D. (collab.). Suelos volcanicos endurecidos. Quito (ECU) ; Quito (ECU) ; Quito (ECU) ; Quito : UE ; ORSTOM ; PUCE ; UCE, p. 430-442. Suelos Volcanicos Endurecidos, 3., Quito (ECU), 1996/12/9-14.
Titre du document
Caracterizacion hidrodinamica de un suelo volcanico endurecido del Ecuador (cangahua), influencia de los estados de superficie
Année de publication
1997
Type de document
Colloque
Auteurs
Leroux Yann, Janeau Jean-Louis
In
Zebrowski Claude (ed.), Quantin Paul (ed.), Trujillo G. (ed.), Villamar M.D. (collab.) Suelos volcanicos endurecidos
Source
Quito (ECU) ; Quito (ECU) ; Quito (ECU) ; Quito : UE ; ORSTOM ; PUCE ; UCE, 1997,
p. 430-442
Colloque
Suelos Volcanicos Endurecidos, 3., Quito (ECU), 1996/12/9-14
The bare and cultivated indurated pyroclastic formations of the Equatorian Sierra (Cangahuas) are strongly susceptible to pluvial erosion. Their reincorporation to agriculture allows a partial control of ground loss and offers an alternative solution for agriculture management. Rain simulation gives information about imbibition, infiltration, runoff and erodibility. The "quadrat point" method enabled us to observe the evolution of surface features (rugosity, crusting and sealing of porosity). We make three campaignsof simulation just after the soil preparation, before and after the harrowing. We observed the variations of hydrodynamic parameters and the evolution of superficial structural features. A rough soil preparation (coarse particle size) enhance the infiltration rate and reduce the soil loss. On the contrary, a fine sized preparation weakens the roughness and seals the porosity by a superficial crusting. Then the efficiency of the running water is enhaced. (Résumé d'auteur).
Plan de classement
Erosion et conservation des sols [068EROSOL]
Descripteurs
PARCELLE D'EROSION ; AGREGAT ; HYDRODYNAMIQUE ; INFILTRATION ; SURFACE DU SOL ; RUGOSITE ; SEDIMENT ; SIMULATION DE PLUIE ; SOL VOLCANIQUE ; CANGAHUA
Description Géographique
EQUATEUR
Localisation
Fonds IRD [F A010012910] ;
Montpellier (Centre IRD)
Identifiant IRD
fdi:010012925
