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Has global change induced divergent trends in radial growth of Pinus sylvestris and Pinus halepensis at their bioclimatic limit? The example of the Sainte-Baume forest (south-east France) / Bruno Vila in Annals of Forest Science, Vol 65 n° 7 (October - November 2008)  

Public [article]  inAnnals of Forest Science > Vol 65 n° 7 (October - November 2008) . - n° 709 Titre : Has global change induced divergent trends in radial growth of Pinus sylvestris and Pinus halepensis at their bioclimatic limit? The example of the Sainte-Baume forest (south-east France) Titre original : Les changements globaux ont-ils induit des tendances de croissance radiale opposées chez Pinus sylvestris et Pinus halepensis à leur limite bioclimatique ? L'exemple de la forêt de la Sainte-Baume Type de document : Article/Communication Auteurs : Bruno Vila, Auteur ; Michel Vennetier, Auteur ; Christian Ripert, Auteur ; Olivier Chandioux, Auteur ; Eryuan Liang, Auteur ; Frédéric Guibal, Auteur ; Franck Torre, Auteur Année de publication : 2008 Article en page(s) : n° 709 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] croissance des arbres [Termes IGN] France (administrative) [Termes IGN] limite bioclimatique [Termes IGN] Pinus halepensis [Termes IGN] Pinus sylvestris [Termes IGN] Sainte-Baume, forêt de la (Bouches-du-Rhône/Var) [Vedettes matières IGN] Végétation et changement climatique Résumé : (auteur) It is agreed that climate (precipitation and temperature) influences the distribution of plant species. Near the margins of a species' natural range, climate becomes limiting to physiological processes. There, climate change may be expected to have a significant impact on tree growth and the species' ranges may be altered. In order to assess what influence climate change could exert on the distribution of pine species at their margin, radial growth trends in ring-width chronologies over the last century were analysed. In the French Mediterranean area where climate change is characterized by increased temperature, forest plots were selected along an altitudinal transect on the north-facing slope of the Sainte-Baume mountain (Bouches-du-Rhône, France) where the ranges of Pinus sylvestris and Pinus halepensis overlap. Two growth patterns were identified. For P. halepensis, radial growth has increased at all altitudes indicating that climate change has improved growth conditions of this species near the margin of its ecological range. For P. sylvestris, radial growth has increased only at low altitudes and even decreased at high altitudes. It must be deduced that the growth changes observed cannot be generalised either at the species level or at the geographical level and must be interpreted with great caution. Numéro de notice : A2008-691 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest:2008048 Date de publication en ligne : 20/09/2008 En ligne : https://doi.org/10.1051/forest:2008048 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=71441 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-DIR-P000234	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt

A new bioclimatic model calibrated with vegetation for Mediterranean forest areas / Michel Vennetier in Annals of Forest Science, Vol 65 n° 7 (October - November 2008)  

Public [article]  inAnnals of Forest Science > Vol 65 n° 7 (October - November 2008) . - n° 10 Titre : A new bioclimatic model calibrated with vegetation for Mediterranean forest areas Titre original : Un nouveau modèle bioclimatique calibré à l'aide de la flore pour les milieux forestiers méditerranéens Type de document : Article/Communication Auteurs : Michel Vennetier, Auteur ; Christian Ripert, Auteur ; Eric Maille, Auteur ; Laurence Blanc, Auteur ; Franck Torre, Auteur ; Philip Roche, Auteur ; Thierry Tatoni, Auteur ; Jean-Jacques Brun, Auteur Année de publication : 2008 Article en page(s) : n° 10 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation [Termes IGN] changement climatique [Termes IGN] forêt méditerranéenne [Termes IGN] inventaire de la végétation [Termes IGN] modèle statistique [Termes IGN] modélisation de la forêt [Termes IGN] Provence-Alpes-Côte d'Azur [Termes IGN] régression des moindres carrés partiels [Termes IGN] stress hydrique Résumé : (auteur) Water availability is one of the main factors explaining flora composition and growth in Mediterranean regions, where it may decline with climate change. Our goal was to develop a model for forest site assessment in Mediterranean environments, focusing on water availability to assess potential vegetation composition and productivity in any places, whatever their level of disturbance. We designed a statistical model, using global climatic and geographic variables, as well as detailed local topographic and edaphic variables, to compute a bioclimatic index for Mediterranean forest environments. This model was calibrated in France with a flora index from 325 old forests. The model explained 80.3% of the flora index variance. The method fills a gap in existing models, bridging scales from the region to forest sites. Beyond its theoretical aspect, it was designed to allow practical tools to be derived from it for decision-making and management, such as the assessment of climate change impact on vegetation, and of forest productivity. Its development and adaptation is possible in other Mediterranean regions, and in any region where water is one of the main limiting factors. Numéro de notice : A2008-654 Affiliation des auteurs : non IGN Thématique : FORET/MATHEMATIQUE Nature : Article DOI : 10.1051/forest:2008050 Date de publication en ligne : 24/10/2008 En ligne : https://doi.org/10.1051/forest:2008050 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=71443 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-DIR-P000234	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt