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Provedor de dados:  IRD
País:  France
Título:  Caracterizacion hidrodinamica de un suelo volcanico endurecido del Ecuador (cangahua), influencia de los estados de superficie
Suelos volcanicos endurecidos
Autores:  Leroux, Yann
Janeau, Jean-Louis
Data:  1997
Ano:  1997
Palavras-chave:  PARCELLE D'EROSION
AGREGAT
HYDRODYNAMIQUE
INFILTRATION
SURFACE DU SOL
RUGOSITE
SEDIMENT
SIMULATION DE PLUIE
SOL VOLCANIQUE
CANGAHUA
Resumo:  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).
Tipo:  Text
Idioma:  Espanhol
Identificador:  http://www.documentation.ird.fr/hor/fdi:010012925

oai:ird.fr:fdi:010012925

Leroux Yann, Janeau Jean-Louis. 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, 1997, p. 430-442. Suelos Volcanicos Endurecidos, 3., Quito (ECU), 1996/12/9-14
Editor:  UE

ORSTOM

PUCE

UCE
Formato:  text/pdf
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