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L’homme a travers ses actions denature fortement l’occupation des sols engendrant une modification du milieu naturel. Cet impact rend la necessite de fournir aux autorites communales les cartes d’occupations des sols et des informations relatives a leurs etat et dynamique. C’est dans cette optique qu’une etude de l’occupation des sols a ete conduite dans trois communes de l’Ouest Nigerien. Elle a pour objectif de cartographier et d’analyser la dynamique de l’occupation des sols de ces communes a partir des images Landsat de 1984 et 2000 et celles de sentinelle 2A de 2017. La classification supervisee par maximum de vraisemblance a ete appliquee et la dynamique a ete analysee a partir des courbes et des calculs de superficies. Les resultats cartographiques ont permis l’etablissement des cartes d’occupation des sols par commune. L’analyse de la dynamique de l’occupation des sols montre que les superficies des formations vegetales et les jacheres regressent sur l’ensemble de la zone d’etude. Les cultures et bâtis progressent respectivement de 180,96% et 119, 81% a Torodi, 65,69% et 205,42% a Tagazar et 98,82% et 143,15% a Gotheye. IL en est de meme pour les zones degradees et les plans d’eau qui connaissent des progressions et des regressions sur l’ensemble de la zone d’etude. Les L’agriculture, l’exploitation du bois d’energie et la demographie sont les principaux facteurs de degradation et de mutation du paysage. Ces resultats peuvent servir de base pour definir les zones prioritaires en vue de la restauration des zones degradees et l’amenagement des formations naturelles.Mots cles : Teledetection, SIG, Cartographie, degradation.   English Title: Spatio-temporal dynamics of the land use of Torodi, Gotheye and Tagazar township in the Tillabery region of NigerMan through his actions strongly distorts the use of land, causing a change in the natural environment. This impact makes it necessary to provide municipalities with land use maps and information relating to their condition and dynamics. It is with this in mind that a study of land use was carried out in three communes in western Niger. Its objective is to map and analyze the dynamics of the land use of these municipalities from the Landsat images of 1984 and 2000 and those of sentinel 2A from 2017. The supervised classification by maximum likelihood was applied and the dynamics was analyzed from curves and area calculations. The cartographic results made it possible to draw up land use maps by municipality. Analysis of the dynamics of land use shows that the areas of plant formations and fallows are declining over the entire study area. Crops and buildings rose respectively by 180.96% and 119, 81% in Torodi, 65.69% and 205.42% in Tagazar and 98.82% and 143.15% in Gotheye. The same is true for degraded areas and bodies of water which are experiencing increases and regressions over the entire study area. Agriculture, the exploitation of energy wood and demography are the main factors of degradation and mutation of the landscape. These results could serve as a basis for defining priority intervention areas for the restoration of degraded areas and the management of agroforestry forests and parks. Keywords: Remote sensing, GIS, Cartography, degradation.

Dynamique spatio-temporelle de l’occupation des sols des communes de Torodi, Gothèye et Tagazar de la région de Tillabéry au Niger