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Etude de l’interaction entre dynamique paysagère et dynamique sociale Exemple du bassin versant de l’Ouvèze (Ardèche, France)

Abstract : The landscape of the Ouvèze watershed has been managed by human for several millenia. The agricultural activity has deeply transformed these landscapes during the last 2000 years. We focused our study on this evolution over the last 2 centuries with an analysis of cadastres and using Landscape Ecology tools. Agriculture underwent many changes and crises perceptible at the scale of the watershed. These one will guide our analysis. In the years 1850, men colonized the medium mountains' space with an important agricultural activity. This one led to an overexploitation of the medium and an overpopulation, which involved the temporary rural migration of the end of the 19th century. One and a half-century later, constraints related to these mediums prevent the development of an intensive and mechanized agriculture. The agricultural declin is perceptible in the landscape with overgrowing of the abandoned agricultural land which leads to a propagation of moors (brooms). Thus, nowadays, this phenomenon involves the territory's closing on the catchment area, and induces a reduction of the landscape diversity which known its rise in the Fifties.
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Guy Lempérière, Monique Léonard, Abdérrahim Bouasria, Sebastien Fleury, Nicolas Robinet. Etude de l’interaction entre dynamique paysagère et dynamique sociale Exemple du bassin versant de l’Ouvèze (Ardèche, France). Montagnes Méditerranéennes, Institut de géographie alpine, 2005. ⟨halshs-02056674⟩

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