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<title lang=en>The decreasing radial wood stiffness pattern of some tropical trees growing in the primary forest is reversed and increases when they are grown in a plantation</title>
<creator>Mc Lean, John Paul</creator>
<creator>Zhang, Tian</creator>
<creator>Bardet, Sandrine</creator>
<creator>Beauchêne, Jacques</creator>
<creator>Thibaut, Anne</creator>
<creator>Clair, Bruno</creator>
<creator>Thibaut, Bernard</creator>
<contributor>Mécanique de l'Arbre et du Bois (MAB) ; Laboratoire de Mécanique et Génie Civil (LMGC) ; Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>College of engineering, Peking university ; Pekin University</contributor>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>ISSN: 1286-4560</source>
<source>EISSN: 1297-966X</source>
<source>Annals of Forest Science</source>
<publisher>Springer Verlag/EDP Sciences</publisher>
<identifier>hal-00644335</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00644335</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00644335/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00644335/file/McLean_al.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00644335</source>
<source>Annals of Forest Science, Springer Verlag/EDP Sciences, 2011, 68 (4), pp.681-688. 〈10.1007/s13595-011-0085-z〉</source>
<identifier>DOI : 10.1007/s13595-011-0085-z</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1007/s13595-011-0085-z</relation>
<language>en</language>
<subject lang=en>Tropical trees . Growth strategy .Wood stiffness . Juvenile wood</subject>
<subject>[SPI.MECA.BIOM] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph]</subject>
<subject>[PHYS.MECA.BIOM] Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph]</subject>
<subject>[SPI.MECA.MSMECA] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Materials and structures in mechanics [physics.class-ph]</subject>
<subject>[PHYS.MECA.MSMECA] Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Background : This study examines the radial trend in wood stiffness of tropical rainforest trees. The objective was to determine if the type of growing environment (exposed plantation or dense primary forest) would have an effect on this radial trend. Methods : The axial elastic modulus of wood samples, representing a pith to bark cross-section, of six trees from several French Guianese species (two of Eperua falcata, one of Eperua grandiflora, two of Carapa procera and one of Symphonia gloubulifera) was measured using a dynamic "forced vibration" method. Results : Primary forest trees were observed to have a decrease in wood stiffness from pith to bark, whereas plantation trees, from the same genus or species, displayed a corresponding increase in wood stiffness. Juvenile wood stiffness appears to vary depending on the environment in which the tree had grown. Conclusion : We suggest that the growth strategy of primary forest trees is to produce wood resistant to selfbuckling so that the height of the canopy may be obtained with the maximum of efficiency. In contrast, the growth strategy of the trees growing in an exposed plantation is to produce low-stiffness wood, important to provide flexibility in wind. Further experiments to study the behaviour of more species, with more individuals per species, growing across a range of physical environments, are required.</description>
<date>2011</date>
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