{"id":82507,"date":"2020-10-07T10:03:33","date_gmt":"2020-10-07T14:03:33","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/modelling-wood-density-modulus-elasticity-white-spruce-plantations\/"},"modified":"2020-10-07T10:03:33","modified_gmt":"2020-10-07T14:03:33","slug":"modelling-wood-density-modulus-elasticity-white-spruce-plantations","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/modelling-wood-density-modulus-elasticity-white-spruce-plantations\/","title":{"rendered":"Modelling wood density and modulus of elasticity in white spruce plantations in Eastern Qu\u00e9bec"},"content":{"rendered":"\n<p>Published in <strong>The Forestry Chronicle 95(3): 196-206. https:\/\/doi.org\/10.5558\/tfc2019-028<\/strong><\/p>\n<p>Forest managers have to take into account multiple objectives such as stand yield, wood quality attributes, ecological constraints and social considerations when making their decisions. The objective of the present study is to build <br \/>(i) a dynamic modulus of elasticity (MOE<sub>dyn<\/sub>) model and <br \/>(ii) a core wood density (WD<sub>core<\/sub>) model for white spruce plantations in the Bas-Saint-Laurent Region (Qu\u00e9bec, Canada) to quantify their inter- and intra-stand variations in order for managers to better weigh their different options. <br \/>Using data obtained from 54 sample plots in 31 white spruce plantations from Eastern Qu\u00e9bec, the MOE<sub>dyn<\/sub> of 143 trees and the WDcore of 162 trees were analysed. Dendrometric and stand variables were used to build a MOE<sub>dyn<\/sub> linear mixed-effect model and a WD<sub>core<\/sub> multiple linear regression model. The MOE<sub>dyn<\/sub> model explained 66.8% of the total variation, 1.1% of which originated from inter-stand variations. MOE<sub>dyn<\/sub> was proportional to diameter at breast height (DBH) and non-linearly decreased with tree growth rate. The WD<sub>core<\/sub> model explained 16.0% of the total variation. The intra-stand variations were represented by a negative relationship between WD<sub>core<\/sub> and growth rate. Inter-stand variations were accounted for by site index and altitude. The performance of the MOE<sub>dyn<\/sub> model was satisfactory and in accordance with the literature. However, the WD<sub>core<\/sub> model was below standard, mainly as a consequence of unaccounted intra-individual variations. Nonetheless, raw simulations using these models suggest that white spruce wood from plantations may benefit from intensive forest management.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Published in The Forestry Chronicle 95(3): 196-206. https:\/\/doi.org\/10.5558\/tfc2019-028 Forest managers have to take into account multiple objectives such as stand yield, wood quality attributes, ecological constraints and social considerations when making their decisions. The objective of the present study is to build (i) a dynamic modulus of elasticity (MOEdyn) model and (ii) a core wood [&hellip;]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1184,1180,1181],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1066,1085],"class_list":["post-82507","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-forest-growth-and-yield-modelling","cptt_theme-forestry-research","cptt_theme-forests","cptt_categ_publi-scientific-article","cptt_auteurs_ministeriels-j-barrette","cptt_auteurs_ministeriels-g-giroud"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Modelling wood density and modulus of elasticity in white spruce plantations in Eastern Qu\u00e9bec - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"Forest managers have to take into account objectives such as stand yield, wood quality attributes, ecological constraints and social considerations.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/modelling-wood-density-modulus-elasticity-white-spruce-plantations\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Modelling wood density and modulus of elasticity in white spruce plantations in Eastern Qu\u00e9bec - 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