{"id":82248,"date":"2019-01-30T12:14:43","date_gmt":"2019-01-30T17:14:43","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/evaluation-tree-classification-system\/"},"modified":"2019-01-30T12:14:43","modified_gmt":"2019-01-30T17:14:43","slug":"evaluation-tree-classification-system","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/","title":{"rendered":"Evaluation of a tree classification system in relation to mortality risk in Qu\u00e9bec northern hardwoods"},"content":{"rendered":"\n<p>Published in <strong>The Forestry Chronicle\u00a084(6): 886-899<\/strong><\/p>\n<p>A tree classification system was developed in the 1980s as part of a guide for tree-marking in the rehabilitation of uneven-aged northern hardwood stands in Qu\u00e9bec. It differentiates trees that are at high and low risk of mortality, trees with sawlog potential and cull trees. The risk class was assessed based on the presence of major crown and bole defects. The main objective of the present study was to evaluate this system with respect to its capacity to predict the probability of tree mortality. The variables used to classify the trees were observed in 88 experimental plots (0.5 ha) established between 1983 and 1999. Tree-level mortality probabilities were modelled for sugar maple (<em>Acer saccharum<\/em> Marsh.), American beech (<em>Fagus grandifolia<\/em> Ehrh.) and yellow birch (<em>Betula alleghaniensis<\/em> Britt.) to test the significance of the classification variables. The presence of decay, fungus or canker, wounds, uprooting, the death of at least 30% of the crown or of the roots, and the product class had significant (p &lt; 0.05) effects on mortality probabilities for at least one of the 3 species studied. In the main, the results supported the tree classification system. However, this system could be modified to differentiate not only trees with a high or low mortality risk, but also to identify some very high-risk trees.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Published in The Forestry Chronicle\u00a084(6): 886-899 A tree classification system was developed in the 1980s as part of a guide for tree-marking in the rehabilitation of uneven-aged northern hardwood stands in Qu\u00e9bec. It differentiates trees that are at high and low risk of mortality, trees with sawlog potential and cull trees. The risk class was [&hellip;]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1180,1181,1182],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1068,1088],"class_list":["post-82248","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-forestry-research","cptt_theme-forests","cptt_theme-silviculture","cptt_categ_publi-scientific-article","cptt_auteurs_ministeriels-s-bedard","cptt_auteurs_ministeriels-f-guillemette"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Evaluation of a tree classification system in relation to mortality risk in Qu\u00e9bec northern hardwoods - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"A tree classification system was developed as part of a guide for tree-marking in the rehabilitation of uneven-aged northern hardwood stands\" \/>\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\/evaluation-tree-classification-system\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Evaluation of a tree classification system in relation to mortality risk in Qu\u00e9bec northern hardwoods - Minist\u00e8re des Ressources naturelles et des For\u00eats\" \/>\n<meta property=\"og:description\" content=\"A tree classification system was developed as part of a guide for tree-marking in the rehabilitation of uneven-aged northern hardwood stands\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/\" \/>\n<meta property=\"og:site_name\" content=\"Minist\u00e8re des Ressources naturelles et des For\u00eats\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/RessourcesNaturellesForets\/\" \/>\n<meta property=\"og:image\" content=\"\/wp-content\/uploads\/Image-g%c3%a9n%c3%a9rale-hiver_FB.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@mrnfqc\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/\",\"url\":\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/\",\"name\":\"Evaluation of a tree classification system in relation to mortality risk in Qu\u00e9bec northern hardwoods - Minist\u00e8re des Ressources naturelles et des For\u00eats\",\"isPartOf\":{\"@id\":\"https:\/\/mrnf.gouv.qc.ca\/#website\"},\"datePublished\":\"2019-01-30T17:14:43+00:00\",\"description\":\"A tree classification system was developed as part of a guide for tree-marking in the rehabilitation of uneven-aged northern hardwood stands\",\"breadcrumb\":{\"@id\":\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/mrnf.gouv.qc.ca\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Publications\",\"item\":\"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Evaluation of a tree classification system in relation to mortality risk in Qu\u00e9bec northern hardwoods\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/mrnf.gouv.qc.ca\/#website\",\"url\":\"https:\/\/mrnf.gouv.qc.ca\/\",\"name\":\"Minist\u00e8re des Ressources naturelles et des For\u00eats\",\"description\":\"Prototype WordPress\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/mrnf.gouv.qc.ca\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Evaluation of a tree classification system in relation to mortality risk in Qu\u00e9bec northern hardwoods - Minist\u00e8re des Ressources naturelles et des For\u00eats","description":"A tree classification system was developed as part of a guide for tree-marking in the rehabilitation of uneven-aged northern hardwood stands","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/","og_locale":"en_US","og_type":"article","og_title":"Evaluation of a tree classification system in relation to mortality risk in Qu\u00e9bec northern hardwoods - Minist\u00e8re des Ressources naturelles et des For\u00eats","og_description":"A tree classification system was developed as part of a guide for tree-marking in the rehabilitation of uneven-aged northern hardwood stands","og_url":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/","og_site_name":"Minist\u00e8re des Ressources naturelles et des For\u00eats","article_publisher":"https:\/\/www.facebook.com\/RessourcesNaturellesForets\/","og_image":[{"width":1200,"height":630,"url":"\/wp-content\/uploads\/Image-g%c3%a9n%c3%a9rale-hiver_FB.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_site":"@mrnfqc","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/","url":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/","name":"Evaluation of a tree classification system in relation to mortality risk in Qu\u00e9bec northern hardwoods - Minist\u00e8re des Ressources naturelles et des For\u00eats","isPartOf":{"@id":"https:\/\/mrnf.gouv.qc.ca\/#website"},"datePublished":"2019-01-30T17:14:43+00:00","description":"A tree classification system was developed as part of a guide for tree-marking in the rehabilitation of uneven-aged northern hardwood stands","breadcrumb":{"@id":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/evaluation-tree-classification-system\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/mrnf.gouv.qc.ca\/en\/"},{"@type":"ListItem","position":2,"name":"Publications","item":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/"},{"@type":"ListItem","position":3,"name":"Evaluation of a tree classification system in relation to mortality risk in Qu\u00e9bec northern hardwoods"}]},{"@type":"WebSite","@id":"https:\/\/mrnf.gouv.qc.ca\/#website","url":"https:\/\/mrnf.gouv.qc.ca\/","name":"Minist\u00e8re des Ressources naturelles et des For\u00eats","description":"Prototype WordPress","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/mrnf.gouv.qc.ca\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/cpt_publication\/82248","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/cpt_publication"}],"about":[{"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/types\/cpt_publication"}],"version-history":[{"count":0,"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/cpt_publication\/82248\/revisions"}],"wp:attachment":[{"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/media?parent=82248"}],"wp:term":[{"taxonomy":"cptt_secteur","embeddable":true,"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/cptt_secteur?post=82248"},{"taxonomy":"cptt_theme","embeddable":true,"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/cptt_theme?post=82248"},{"taxonomy":"cptt_categ_publi","embeddable":true,"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/cptt_categ_publi?post=82248"},{"taxonomy":"cptt_auteurs_ministeriels","embeddable":true,"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/cptt_auteurs_ministeriels?post=82248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}