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Déterminisme, dynamique et modélisation spatiale de la diversité floristique dans un contexte de déprise pastorale. Application à la gestion durable des espaces montagnards sous influence méditerranéenne.

Abstract : In European mountain, the pastoral activity decreases unrelentingly. The post-cultural succession modifies the structure and functionning of vegetation, deriving as well in its contents as in its expression, of a traditional use. The sustainable management of this lands in constant change must avoid calling into question their taxonomic and ecological persistence. The study was carried out in a watershed call « Petit Buëch » located in the Hautes- Alpes (France), and registered in the Natura2000 network. To assess, analyse and monitor this site and associated threatened species, we had using statistical modelling techniques, to understand the patterns of plant species and their richness. The explanatory factors used in the models were physical and bioclimatic variables derived from a digital elevation model (DEM) and from land use history, all constructed in a 50 m-resolution GIS environment. GLM (generalized linear models) were used to construct the models using a forward stepwise procedure. The models are discussed in the context of current theories on species richness and vegetation dynamics. Modeling of threatened species, vegetation and plant species richness based on areal photographers and GIS can provide useful information needed in land use planning and policy-makers.
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https://pastel.archives-ouvertes.fr/pastel-00000906
Contributor : Ecole Agroparistech <>
Submitted on : Tuesday, November 16, 2004 - 8:00:00 AM
Last modification on : Wednesday, December 12, 2018 - 2:30:02 PM
Long-term archiving on: : Thursday, September 30, 2010 - 6:33:59 PM

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  • HAL Id : pastel-00000906, version 1

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Damien Marage. Déterminisme, dynamique et modélisation spatiale de la diversité floristique dans un contexte de déprise pastorale. Application à la gestion durable des espaces montagnards sous influence méditerranéenne.. Sciences de l'environnement. ENGREF (AgroParisTech), 2004. Français. ⟨pastel-00000906⟩

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