نبذة مختصرة : International audience ; We describe landscape changes in the context of a rapidly urbanizing mountain region, aroundthe city of Grenoble in the French Alps. By combining a multi-source merging method and aerialphoto-interpretation, we analyzed land cover dynamics during the 1998-2009 period. Theanalysis across 3 dates of the cartographic database for the 4450km² at 1:15,000 scale, with of 23land cover types, showed a rapid and steady urban growth at the expense of agricultural areas,with an expansion greater than 6% during the ten-year period. A synthetic overview of changesat municipality scale showed the prominence of newly artificialized areas not only in the valleysaround Grenoble but also in the main, predominantly agricultural plain areas of Bièvre andVoiron. Most of the changes are contiguous to already urbanized areas. Therefore they inducelimited landscape fragmentation, as new built-up areas are emerging alongside existing ones orwithin existing ones as part of a densification process.The results obtained for this area illustrate an emerging major preoccupation in the WesternEuropean Alps (Switzerland, Italy, Austria.), namely that the present rate of urbanization is notsustainable in the longer run in fragile Alpine valleys. In this respect, our cartographic databasewill provide baseline information for a participatory prospective exercise performed with localstakeholders of the Grenoble region, aiming to support sustainable land management andplanning. ; Cet article présente l'analyse de l'évolution du paysage en région de montagne, dans les Alpes françaises autour de la ville de Grenoble où l'étalement urbain joue un rôle important. Nous avons analysé la dynamique de l'occupation des sols au cours de la période 1998-2009, à partir de la fusion de données spatiales multi-sources et de l'interprétation de photographies aériennes. Cette analyse, sur trois dates, à partir d'une base de données de 4450 km² au 1:15000ème comportant 23 classes d'occupation des sols, a permis de montrer la croissance ...
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