Typologie, cartographie et évaluation des impacts anthropiques des séries de végétation forestière du Massif armoricain

Abstract : The first human uses of forests date back to the Paleolithic period. Since then, man has constantly modified the forest cover. Based on the history of human forest use, three research questions emerge: 1- what is the forest landscapes composition? 2- How is the forest vegetation landscape distributed? 3- How the human impact on the forest vegetation landscape could be assessed?To answer these questions, the armorican Massif, the most least-forested territory in France with large agricultural areas, is studied. This project is part of the CarHAB national program initiated by the FrenchEcological Ministry in 2010, based on a dynamiccatenal phytosociology approach. Symphytosociology and geosymphytosociology focus on both dynamical aspects (series) and spatial distribution of communities at different scales (geoseries), and are consequently particularly well-adapted for the forest ecocomplexes study. First, a typology of the forest vegetation series and geoseries in the armorican Massif is proposed. Then, a mapping of actual vegetation (VA) and potential natural vegetation (PNV) is done on study area representative sites.Finally, a diachronic study on the Andaine massif (61) is used to assess past and present human impact and to simulate the future evolution of the forest vegetation landscape. Those informations, combined with the PNV site map, are used to develop management guidelines and provide to forest managers a tool to get closer to the PNV while ensuring a multifunctional site operation at the same time.
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Submitted on : Friday, June 14, 2019 - 5:00:29 PM
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  • HAL Id : tel-02156780, version 2

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Aurélie Chalumeau. Typologie, cartographie et évaluation des impacts anthropiques des séries de végétation forestière du Massif armoricain. Architecture, aménagement de l'espace. Université de Bretagne occidentale - Brest, 2018. Français. ⟨NNT : 2018BRES0093⟩. ⟨tel-02156780v2⟩

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