Dynamic modelling for linear erosion initiation and development under climate and land-use changes in northern Laos

Gully erosion : a global issue

Auteurs :
CHAPLOT, V.
GIBOIRE, G.
MARCHAND, P.
VALENTIN, C.
VALENTIN, C.

Description :
This study investigates to what extent GIS-based modelling using topographic as well as soil and land-use information may be a useful tool for predicting linear erosion initiation and development in agricultural landscapes. The AA. hypothesize that soil incision can be modelled in a physically deterministic way by using a threshold value of estimated flow velocity. Their second objective is to evaluate the impact of land-use and climatic changes upon linear erosion. Field observations of linear erosion in a watershed of Laos under sloping land conditions were compared to estimated flow velocities estimated using a process-based model.


Type de document :
Congrès

Source :
International Symposium on Gully erosion under global change, 2, Chengdu, Chine, 2002-05-22, Catena (Giessen), issn : 0341-8162, 2005, vol. 63, n°. 2-3, p. 318-328, nombre de pages : 11, Collation : Illustration, Références bibliographiques : 18 ref.

Date :
2005

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena