tailieunhanh - Báo cáo lâm nghiệp: "End-use related physical and mechanical properties of selected fast-growing poplar hybrids (Populus trichocarpa × P. deltoides)"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: End-use related physical and mechanical properties of selected fast-growing poplar hybrids (Populus trichocarpa × P. deltoides). | Ann. For. Sci. 64 2007 621-630 INRA EDP Sciences 2007 DOI forest 2007040 Available online at Original article End-use related physical and mechanical properties of selected fast-growing poplar hybrids Populus trichocarpa X P. deltoides Lieven De Boever Dries Vansteenkiste Joris Van Acker Marc Stevens Department of Forest and Water Management Laboratory of Wood Technology Ghent University Coupure Links 653 9000 Ghent Belgium Received 7 August 2006 accepted 18 January 2007 Abstract - This study focused on physical and mechanical properties of fast-growing poplar clones in relation to potential end uses with high added value. A total of 14 trees from three different clones all P. trichocarpa X deltoides TxD hybrids were felled in a poplar plantation in Lille Belgium six Beaupré four Hazendans and four Hoogvorst . Growth rate was found to have no significant influence on the physical mechanical properties. Although the investigated clones are genetically closely related important variations in physical and mechanical properties were observed. Specific features such as spatial distribution of tension wood and dimensional stability are the main quality factors. It was concluded that Beaupré is suitable for a wide range of high value added applications such as plywood or construction wood. Hazendans and Hoogvorst will need adapted technology in processing. Further research is needed to characterize clonally induced variation in properties and to assess adequate processing strategies for multiclonal poplar stands. Populus trichocarpa X P deltoides physical properties mechanical properties veneer plywood Résumé - Propriétés physiques et mécaniques d hybrides de peupliers à croissance rapide en fonction de l aptitude à l emploi. Cette étude porte sur les caractéristiques physiques et mécaniques du bois de clones de peupliers à croissance rapide en fonction de l aptitude à l emploi. Quatorze arbres ont été étudiés provenant d une plantation de .