%0 Conference Proceedings
%9 ACTI : Communications avec actes dans un congrès international
%A Leroux, Yann
%A Janeau, Jean-Louis
%T Caracterizacion hidrodinamica de un suelo volcanico endurecido del Ecuador (cangahua), influencia de los estados de superficie
%S Suelos volcanicos endurecidos
%C Quito (ECU) ; Quito (ECU) ; Quito (ECU) ; Quito
%D 1997
%E Zebrowski, Claude
%E Quantin, Paul
%E Trujillo, G.
%E Villamar, M.D.
%L fdi:010012925
%G SPA
%I UE ; ORSTOM ; PUCE ; UCE
%K PARCELLE D'EROSION ; AGREGAT ; HYDRODYNAMIQUE ; INFILTRATION ; SURFACE DU SOL ; RUGOSITE ; SEDIMENT ; SIMULATION DE PLUIE
%K SOL VOLCANIQUE ; CANGAHUA
%K EQUATEUR
%P 430-442
%U https://www.documentation.ird.fr/hor/fdi:010012925
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/divers2/010012925.pdf
%W Horizon (IRD)
%X 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).
%B Suelos Volcanicos Endurecidos
%8 1996/12/9-14
%$ 068EROSOL