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High resolution temporal variation in wood properties in irrigated and non-irrigated Eucalyptus globulus / David M. Drew in Annals of Forest Science, Vol 66 n° 4 (June 2009)  

Public [article]  inAnnals of Forest Science > Vol 66 n° 4 (June 2009) . - n° 406 Titre : High resolution temporal variation in wood properties in irrigated and non-irrigated Eucalyptus globulus Titre original : Variations temporelles à haute résolution des propriétés du bois d'Eucalyptus globulus irrigués et non irrigués Type de document : Article/Communication Auteurs : David M. Drew, Auteur ; Geoffrey Downes, Auteur ; Anthony P. O'Grady, Auteur ; Jennifer Read, Auteur ; Dale Worledge, Auteur Année de publication : 2009 Article en page(s) : n° 406 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] croissance des arbres [Termes IGN] dendrométrie [Termes IGN] densité du bois [Termes IGN] Eucalyptus globulus [Termes IGN] qualité du bois [Termes IGN] Tasmanie [Vedettes matières IGN] Sylviculture Résumé : (auteur) Environmental determinants of wood properties variation were examined in Eucalyptus globulus, a globally important hardwood plantation species, in southern Tasmania, Australia. Radial variation in wood properties, measured with the SilviScan system, were re-scaled from distance to time abscissa using stem radial growth data measured with dendrometers. With this re-scaled data it was possible to evaluate how water availability and temperature affected wood density, microfibril angle (MFA) and fibre and vessel transverse dimensions in irrigated and non-irrigated trees. Wood density, fibre radial diameter and MFA were sensitive to water availability. Wood density increased and fibre radial diameter decreased in response to reduced water availability. When high water availability was maintained, wood density was negatively correlated with temperature. Together, temperature and soil matric potential explained about 60% of temporal variation in wood density variation. In contrast MFA was not related to temperature but decreased with increasing water stress. Slower growing trees also had lower MFA than faster growing trees. Slower growing trees had a larger number of vessels per unit area of wood than faster growing trees within this even aged stand. However, vessel radius to the 4th power was significantly higher in faster growing trees than in slower growing trees. Overall, E. globulus wood properties were sensitive to temporal changes in environmental conditions (particularly water availability) and associated growth rates. The data provided support for the hypothesis that growth rates are hydraulically mediated. Numéro de notice : A2009-654 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest/2009017 Date de publication en ligne : 04/06/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/04/f08354/f08354.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72239 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-001-P000405	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt