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https://doi.org/10.5194/hessd-8-1569-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/hessd-8-1569-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
01 Feb 2011
Status: this preprint was under review for the journal HESS but the revision was not accepted.
Runoff evolution according to land use change in a small Sahelian catchment
Abstract. Significant land use changes have been observed in West Africa, particularly in the Sahel region where climatic and demographic factors have led to a rise in cultivated areas, in recent decades. These changes caused strong modifications in the water cycle and in river regimes.
By comparing the rainfall-runoff relationships for two periods (1991–1994 and 2004–2010) in two small neighbouring catchments (approx. 0.1 km2 each) of the Sahel, this study highlights the different hydrological consequences of land use change, particularly vegetation clearing and the consequent degradation of topsoil.
Runoff increased in the upper basin, while it decreased in the lower basin, due to a strong increase in in-channel infiltration. Flood peak durations have become shorter in the downstream part of the catchment due to the huge increase of runoff water transmission losses within the gullies.
Further study will consist of equipping one of the catchments with anti-erosion devices (mainly "half-moons" and terraces) in order to evaluate the influence of anti-erosion devices on runoff and suspended load.
How to cite. Descroix, L., Esteves, M., Souley Yéro, K., Rajot, J.-L., Malam Abdou, M., Boubkraoui, S., Lapetite, J. M., Dessay, N., Zin, I., Amogu, O., Bachir, A., Bouzou Moussa, I., Le Breton, E., and Mamadou, I.: Runoff evolution according to land use change in a small Sahelian catchment, Hydrol. Earth Syst. Sci. Discuss., 8, 1569–1607, https://doi.org/10.5194/hessd-8-1569-2011, 2011.
Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this paper. While Copernicus Publications makes every effort to include appropriate place names, the final responsibility lies with the authors. Views expressed in the text are those of the authors and do not necessarily reflect the views of the publisher.
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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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RC C148: 'Review of Runoff Evolution According to Land Use Change in a Small Sahelian Catchment', Anonymous Referee #1, 22 Feb 2011
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RC C557: 'Review of "Descroix et al"', Anonymous Referee #2, 20 Mar 2011
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AC C1734: 'Reply to referees', Luc Descroix, 25 May 2011
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
- Printer-friendly version
- Supplement
-
RC C148: 'Review of Runoff Evolution According to Land Use Change in a Small Sahelian Catchment', Anonymous Referee #1, 22 Feb 2011
-
RC C557: 'Review of "Descroix et al"', Anonymous Referee #2, 20 Mar 2011
-
AC C1734: 'Reply to referees', Luc Descroix, 25 May 2011
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Cited
10 citations as recorded by crossref.
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- Hydroclimate Extremes in Africa: Variability, Observations and Modeled Projections A. Siebert https://doi.org/10.1111/gec3.12136
- Impacts of urbanization on river flow frequency: A controlled experimental modeling-based evaluation approach M. Chu et al. https://doi.org/10.1016/j.jhydrol.2013.04.051
- Analyse des écoulements dans le bassin du fleuve Sénégal de 1960 à 2008 M. Cisse et al. https://doi.org/10.7202/1025566ar
- Parameter estimation of a real hydrological system using an adjoint method**This work has been partially supported by the LabEx PERSYVAL-Lab (ANR-11-LABX-0025-01) and the MEPIERA project, Grenoble Institute of Technology V. Nguyen et al. https://doi.org/10.1016/j.ifacol.2016.07.978
- Exploring the frequency of hydroclimate extremes on the River Niger using historical data analysis and Monte Carlo methods A. Siebert & M. Ward https://doi.org/10.1080/19376812.2013.854707
- Influence de la dynamique de l’occupation des terres sur les ressources en eau au Benin (Afrique de L’Ouest) R. Bodjrenou & F. Comandan https://doi.org/10.1080/27678490.2023.2233482
- Genèse des écoulements sur deux petits bassins versants cristallins de l’Ouest du Niger : approche multi-échelles du fonctionnement hydrodynamique M. Malam-Abdou et al. https://doi.org/10.4000/geomorphologie.11537
- Low-cost small-scale irrigation for developing an agroforestry system in the semi-arid zone of Niger: case of the apple of the Sahel (Ziziphus mauritiana L.) B. Traore et al. https://doi.org/10.3389/fsufs.2024.1282235
Latest update: 29 May 2026
L. Descroix
IRD/UJF-Grenoble 1/CNRS/G-INP, LTHE UMR 5564, Grenoble, 38041, France
M. Esteves
IRD/UJF-Grenoble 1/CNRS/G-INP, LTHE UMR 5564, Grenoble, 38041, France
K. Souley Yéro
IRD/UJF-Grenoble 1/CNRS/G-INP, LTHE UMR 5564, Grenoble, 38041, France
J.-L. Rajot
IRD – BIOEMCO /LISA, Université Paris Est Créteil, Créteil, France
M. Malam Abdou
Université Abdou Moumouni, Departement de géographie, Niamey, Niger
S. Boubkraoui
IRD/UJF-Grenoble 1/CNRS/G-INP, LTHE UMR 5564, Grenoble, 38041, France
J. M. Lapetite
IRD/UJF-Grenoble 1/CNRS/G-INP, LTHE UMR 5564, Grenoble, 38041, France
N. Dessay
UMR ESPACE/IRD, Montpellier, France
I. Zin
LTHE-G-INP, BP 53, 38041 Grenoble cedex 9, France
O. Amogu
IRD/UJF-Grenoble 1/CNRS/G-INP, LTHE UMR 5564, Grenoble, 38041, France
A. Bachir
Université Abdou Moumouni, Departement de géographie, Niamey, Niger
I. Bouzou Moussa
Université Abdou Moumouni, Departement de géographie, Niamey, Niger
E. Le Breton
LGP-CNRS, Meudon Bellevue, France
I. Mamadou
LGP-CNRS, Meudon Bellevue, France