Rainfall-induced consolidation and sealing effects on soil erodibility during concentrated runoff for loess-derived topsoils

Auteurs :
KNAPEN, A.
POESEN, J.
DE BAETS, S.

Description :
Flume experiments simulating concentrated runoff were carried out on remolded silt loam samples to measure the effect of rainfall-induced soil consolidation and soil surface sealing on soil erosion by concentrated flow for loess-derived soils and to establish a relationship between soil erodibility and soil bulk density. Soil consolidation and sealing were simulated by successive simulated rainfall events alternated by periods of drying. Soil detachment measurements were repeated for 4 different soil moisture contents. The results suggest that the compaction of thalwegs where concentrated flow erosion often occurs might be an alternative soil erosion control measure.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2008, vol. 33, n°. 3, p. 444-458, nombre de pages : 15, Collation : Illustration, Références bibliographiques : 51 ref.

Date :
2008

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley