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Au Burkina Faso, les contraintes climatiques couplees aux actions anthropiques nefastes ont entraine une degradation des ressources naturelles dans la zone du bassin versant du fleuve Nakanbe. L'objectif de l’etude etait d'evaluer l’etat de degradation du milieu et d’analyser les effets des mesures entreprises pour y remedier. Des analyses diachroniques de l’occupation des terres en 1982, 1995 et 2008 ont ete realisees par l’interpretation des photographies aeriennes de Loaga et ses environs, ainsi que des enquetes pour apprehender les perceptions paysannes sur les causes, les consequences et les strategies d’adaptation aux changements climatiques. Les resultats ont montre que la vegetation a regresse de 385 ha de 1982 a 1995 tandis que les terres cultivees ont augmente durant cette meme periode. Par contre, de 1995 a 2008, il a ete note un accroissement de la savane claire et une regression des zones cultivees a la suite d’une reprise de la vegetation qui a ete observee dans les zones amenagees par les techniques de conservation des eaux et des sols (CES). Ces resultats suggerent de poursuivre les efforts effectues dans la mise en oeuvre des techniques CES. © 2017 International Formulae Group. All rights reserved. Mots cles: Occupation des sols, degradation, CES, regeneration, Burkina Faso English Title: Analysis of the evolution of soil occupation using aerial photographs at Loaga area in Bam province, Burkina Faso English Abstract In Burkina Faso, climatic constraints in addition to human activities induced the degradation of natural resources, particularly in the catchment of the river Nakanbe. The study objective was to assess the degree of natural resources degradation and to analyze the effects of measures to solve the problem. Diachronic analyses of land occupation in 1982, 1995 and 2008 were carried out through aerial photographs interpretation of Loaga site and surrounding areas. These analyses were coupled with surveys to better understand farmers' perceptions on the causes, consequences and adaptation strategies to climate change. The results showed a decrease of vegetation area of 385 ha from 1982 to 1995, while the area of cultivated lands increased during the same period. In contrast, from 1995 to 2008, an increase in savanna cover and a regression of cultivated lands were  observed, following land recovery in areas using soil and water conservation (SWC) techniques. These results suggested to continue the ongoing efforts on SWC for environmental restoration. © 2017 International Formulae Group. All rights reserved. Keywords: Land use, degradation, SWC techniques, vegetation recovery, Burkina Faso

Analyse de l'évolution de l’occupation des terres à partir de photographies aériennes de la localité de Loaga dans la province du Bam, Burkina Faso