Publications des scientifiques de l'IRD

Amogu O., Esteves Michel, Vandervaere J.P., Malam Abdou M., Panthou G., Rajot Jean-Louis, Souley Yéro K., Boubkraoui S., Lapetite Jean-Marc, Dessay Nadine, Zin I., Bachir A., Bouzou Moussa I., Faran Maïga O., Gautier E., Mamadou I., Descroix Luc. (2015). Runoff evolution due to land-use change in a small Sahelian catchment. Hydrological Sciences Journal = Journal des Sciences Hydrologiques, 60 (1), p. 78-95. ISSN 0262-6667.

Titre du document
Runoff evolution due to land-use change in a small Sahelian catchment
Année de publication
2015
Type de document
Article référencé dans le Web of Science WOS:000346588200006
Auteurs
Amogu O., Esteves Michel, Vandervaere J.P., Malam Abdou M., Panthou G., Rajot Jean-Louis, Souley Yéro K., Boubkraoui S., Lapetite Jean-Marc, Dessay Nadine, Zin I., Bachir A., Bouzou Moussa I., Faran Maïga O., Gautier E., Mamadou I., Descroix Luc
Source
Hydrological Sciences Journal = Journal des Sciences Hydrologiques, 2015, 60 (1), p. 78-95 ISSN 0262-6667
Land-use changes have been significant these last decades in West Africa, particularly in the Sahel region; in this area, climatic and demographic factors have led to a rise in cropped areas in recent decades causing strong changes in the water cycle and in river regimes. This study compares the rainfall-runoff relationships for two periods (1991-1994 and 2004-2011) in two small and similar neighbouring Sahelian catchments (approx 0.1 km(2) each). This allows identification of the different hydrological consequences of land-use/land-cover change, particularly the fallow shortening and the consequent degradation of topsoil. The main land surface change is a 75% increase in crusted soil area. Runoff increased by more than 20% on average between the two periods while flood duration decreased by 50% on average. However, runoff values remained largely constant in the lower part of the northern basin due to a strong increase in in-channel infiltration.
Plan de classement
Dynamique de l'eau à l'interface sol-plante-atmosphère [062MECEAU02] ; Erosion et conservation des sols [068EROSOL]
Descripteurs
PLUIE ; DEBIT ; RUISSELLEMENT ; EVOLUTION ; FACTEUR ANTHROPIQUE ; UTILISATION DU SOL ; SOL CULTIVE ; JACHERE ; DEGRADATION DU SOL ; CROUTE ; ETUDE COMPARATIVE ; BASSIN VERSANT ; 1991 1994 ; 2004 2011
Description Géographique
NIGER ; ZONE SAHELIENNE
Localisation
Fonds IRD [F B010067265]
Identifiant IRD
fdi:010067265
Contact