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(Article of periodic en Anglais - 2009)

Document title

Vegetation and topographic controls on sediment deposition and storage on gully beds in a degraded mountain area

Authors(s) and Affiliation(s)

MOLINA A. (1) ; GOVERS G. (1) ; CISNEROS F. (2) ; VANACKER V (3 4) ;
(1) Physical and Regional Geography Research Group, Katholieke Univ., Leuven, BELGIQUE
(2) Programa para el Manejo del Agua y del Suelo (PROMAS), Univ., Cuenca, EQUATEUR
(3) Dep. of Geography, Univ. of Louvain, Louvain-la-Neuve, BELGIQUE
(4) Fonds de la Recherche Scientifique (FRS), Bruxelles, BELGIQUE

Abstract

This study in the Ecuadorian Andes evaluates the potential of vegetation to stabilize active gully systems by trapping and retaining eroded sediment in the gully bed, and analyses the significance of vegetation restoration in the gully bed in reducing sediment export from degraded catchments. Field measurements on 138 gully segments located in 13 ephemeral steep gullies with different ground vegetation cover indicate that gully bed vegetation is the most important factor in promoting short-term (1-15 years) sediment deposition and gully stabilization. The presence of vegetation in gully beds gives rise to the formation of vegetated buffer zones, which enhance short-term sediment trapping even in active gully systems in mountainous environments. Vegetation buffer zones are shown to modify the connectivity of sediment fluxes, as they reduce the transport efficiency of gully systems

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2009, vol. 34, no6 [pp. 755-767]

Bibliographic references : 1 p.

Collation : 8 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1747

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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