[ Variabilités climatiques et occupation des sols dans le bassin versant du barrage de Yakouta (Sahel Burkinabè) ]
Volume 49, Issue 1, June 2020, Pages 25–38
Blaise Ouédraogo1, Kaboré Oumar2, Dama-balima Mariam Myriam3, and GANSAONRE Raogo Noël4
1 Institut de l’Environnement et de Recherches Agricoles, Centre National de la Recherche Scientifique et Technologique, Ouagadougou, Burkina Faso
2 Institut de l’Environnement et de Recherches Agricoles, Centre National de la Recherche Scientifique et Technologique, Ouagadougou, Burkina Faso
3 Institut de l’Environnement et de Recherches Agricoles, Centre National de la Recherche Scientifique et Technologique, Ouagadougou, Burkina Faso
4 Centre Universitaire de Gaoua, Université Nazi BONI, Laboratoire LERMIT, Burkina Faso
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Changes in land use are an indicator of human action on the environment. Several factors influence agropastoralists in the Yakouta watershed in land use and occupation. Climatic extremes are real catalysts for the degradation of the biophysical environment, which is reflected, among other things, in the reduction of plant resources and the drying up of arable land. The needs of rural societies materialize through the use of space and resources, according to techniques and spatial logic that depend on a more or less complex social organization. The pressures exerted on space determine the adaptation responses developed by populations in order to maintain or improve the productivity of the environment. The objective of this study is to establish the link between climate change and land-use strategies in the Yakouta watershed. The methodology consisted in linking remote sensing through the processing of multi-date satellite images (2002, 2010 and 2018) and the analysis of climate data from 1961 to 2018. The results obtained show that more than 35 per cent of the space under consideration has undergone a change of occupation. In terms of climate, the IPS index has made it possible to highlight not only the dry and wet periods recorded since 1961, but also to establish a link between changes in vegetation cover and drought. In the light of these results, the investigations also looked at the adaptation strategies deployed by local populations.
Author Keywords: Climate variability, land use, watershed, Yakouta, Burkina Faso.
Volume 49, Issue 1, June 2020, Pages 25–38
Blaise Ouédraogo1, Kaboré Oumar2, Dama-balima Mariam Myriam3, and GANSAONRE Raogo Noël4
1 Institut de l’Environnement et de Recherches Agricoles, Centre National de la Recherche Scientifique et Technologique, Ouagadougou, Burkina Faso
2 Institut de l’Environnement et de Recherches Agricoles, Centre National de la Recherche Scientifique et Technologique, Ouagadougou, Burkina Faso
3 Institut de l’Environnement et de Recherches Agricoles, Centre National de la Recherche Scientifique et Technologique, Ouagadougou, Burkina Faso
4 Centre Universitaire de Gaoua, Université Nazi BONI, Laboratoire LERMIT, Burkina Faso
Original language: French
Copyright © 2020 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Changes in land use are an indicator of human action on the environment. Several factors influence agropastoralists in the Yakouta watershed in land use and occupation. Climatic extremes are real catalysts for the degradation of the biophysical environment, which is reflected, among other things, in the reduction of plant resources and the drying up of arable land. The needs of rural societies materialize through the use of space and resources, according to techniques and spatial logic that depend on a more or less complex social organization. The pressures exerted on space determine the adaptation responses developed by populations in order to maintain or improve the productivity of the environment. The objective of this study is to establish the link between climate change and land-use strategies in the Yakouta watershed. The methodology consisted in linking remote sensing through the processing of multi-date satellite images (2002, 2010 and 2018) and the analysis of climate data from 1961 to 2018. The results obtained show that more than 35 per cent of the space under consideration has undergone a change of occupation. In terms of climate, the IPS index has made it possible to highlight not only the dry and wet periods recorded since 1961, but also to establish a link between changes in vegetation cover and drought. In the light of these results, the investigations also looked at the adaptation strategies deployed by local populations.
Author Keywords: Climate variability, land use, watershed, Yakouta, Burkina Faso.
Abstract: (french)
Les changements d’occupation du sol constituent un indicateur de l’action de l’homme sur le milieu. Plusieurs facteurs influencent les agropasteurs du bassin versant de Yakouta dans l’utilisation et dans l’occupation des terres. Les extrêmes climatiques sont de véritables catalyseurs de la dégradation du milieu biophysique qui se traduit entre autres par la diminution des ressources végétales et l’asséchement des terres cultivables. Les besoins des sociétés rurales se matérialisent par une utilisation de l'espace et des ressources, selon des techniques et une logique spatiale dépendant d'une organisation sociale plus ou moins complexe. Les pressions exercées sur l’espace déterminent les réponses d’adaptation développées par les populations en vue de maintenir ou d’améliorer la productivité du milieu. L’objectif de cette étude est d’établir le lien entre le changement climatique et les stratégies d’occupation des terres dans le bassin versant de Yakouta. La méthodologie a consisté à lier la télédétection à travers le traitement des images satellites multi dates (2002, 2010 et 2018) et à l’analyse des données climatiques de 1961 à 2018. Les résultats obtenus montrent que plus de 35 % de l’espace considéré a connu un changement d’occupation. Sur le plan du climat l’indice IPS a permis de mettre en évidence non seulement les périodes sèches et les périodes humides enregistrés depuis 1961, mais aussi de faire le lien entre l’évolution du couvert végétal et la sécheresse. Au regard de ces résultats les investigations se sont penchées également sur les stratégies d’adaptation déployées par les populations locales.
Author Keywords: Variabilité climatique, occupation des sols, bassin versant, Yakouta, Burkina Faso.
How to Cite this Article
Blaise Ouédraogo, Kaboré Oumar, Dama-balima Mariam Myriam, and GANSAONRE Raogo Noël, “Climate variability and land use in the catchment area of the Yakouta dam (Burkinabe Sahel),” International Journal of Innovation and Scientific Research, vol. 49, no. 1, pp. 25–38, June 2020.
