{"id":82240,"date":"2022-11-14T11:21:49","date_gmt":"2022-11-14T16:21:49","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/"},"modified":"2022-11-14T11:21:49","modified_gmt":"2022-11-14T16:21:49","slug":"estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/","title":{"rendered":"Estimating stand attributes of boreal forest using digital aerial photography and a shadow fraction method"},"content":{"rendered":"\n\n\n

Published in Canadian Journal of Remote Sensing<\/strong>., vol 39. p. 217-231. https:\/\/doi.org\/10.5589\/m13-030<\/a><\/strong><\/p>\n

The aim of this study was to develop an imputing method to map forest stand attributes (height and volume) using panchromatic aerial photographs with a spatial resolution of 30 cm and Landsat images. The method was tested on several black spruce-dominated sites in Qu\u00e9bec, Canada. The method involved four procedures: (i) measuring the shadow fraction from panchromatic aerial photographs; (ii) generating regression models between the shadow fraction and forest attributes; (iii)\u00a0locally mapping the forest attributes as a grid layer (30 m \u00d7 30 m); and (iv)\u00a0expanding the forest attributes from the local maps to a large study area using an imputation approach. Regression models between the shadow fraction and stand attributes were calibrated with ground sample plots and a series of 73 aerial photographs.<\/p>\n

The portion of each aerial photograph that was used was restricted to its centre (between 6.2\u00b0 and 11.3\u00b0) to improve goodness-of-fit. Small local maps of stand attributes were thus produced from the shadow fraction and used as the training dataset for an imputing approach, a k<\/em> nearest-neighbours algorithm, with the aim of mapping forest attributes over a large area.<\/p>\n","protected":false},"excerpt":{"rendered":"

Published in Canadian Journal of Remote Sensing., vol 39. p. 217-231. https:\/\/doi.org\/10.5589\/m13-030 The aim of this study was to develop an imputing method to map forest stand attributes (height and volume) using panchromatic aerial photographs with a spatial resolution of 30 cm and Landsat images. The method was tested on several black spruce-dominated sites in […]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[874,1190],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1096],"class_list":["post-82240","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-cartography","cptt_theme-imaging-and-lidar","cptt_categ_publi-scientific-article","cptt_auteurs_ministeriels-a-leboeuf"],"acf":[],"yoast_head":"\nEstimating stand attributes of boreal forest using digital aerial photography and a shadow fraction method - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"The aim of this study was to develop an imputing method to map boreal forest stand attributes using panchromatic aerial photographs.\" \/>\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\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Estimating stand attributes of boreal forest using digital aerial photography and a shadow fraction method - Minist\u00e8re des Ressources naturelles et des For\u00eats\" \/>\n<meta property=\"og:description\" content=\"The aim of this study was to develop an imputing method to map boreal forest stand attributes using panchromatic aerial photographs.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/\" \/>\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=\"2 minutes\" \/>\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\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/\",\"url\":\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/\",\"name\":\"Estimating stand attributes of boreal forest using digital aerial photography and a shadow fraction method - Minist\u00e8re des Ressources naturelles et des For\u00eats\",\"isPartOf\":{\"@id\":\"https:\/\/mrnf.gouv.qc.ca\/#website\"},\"datePublished\":\"2022-11-14T16:21:49+00:00\",\"description\":\"The aim of this study was to develop an imputing method to map boreal forest stand attributes using panchromatic aerial photographs.\",\"breadcrumb\":{\"@id\":\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/#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\":\"Estimating stand attributes of boreal forest using digital aerial photography and a shadow fraction method\"}]},{\"@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":"Estimating stand attributes of boreal forest using digital aerial photography and a shadow fraction method - Minist\u00e8re des Ressources naturelles et des For\u00eats","description":"The aim of this study was to develop an imputing method to map boreal forest stand attributes using panchromatic aerial photographs.","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\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/","og_locale":"en_US","og_type":"article","og_title":"Estimating stand attributes of boreal forest using digital aerial photography and a shadow fraction method - Minist\u00e8re des Ressources naturelles et des For\u00eats","og_description":"The aim of this study was to develop an imputing method to map boreal forest stand attributes using panchromatic aerial photographs.","og_url":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/","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":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/","url":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/","name":"Estimating stand attributes of boreal forest using digital aerial photography and a shadow fraction method - Minist\u00e8re des Ressources naturelles et des For\u00eats","isPartOf":{"@id":"https:\/\/mrnf.gouv.qc.ca\/#website"},"datePublished":"2022-11-14T16:21:49+00:00","description":"The aim of this study was to develop an imputing method to map boreal forest stand attributes using panchromatic aerial photographs.","breadcrumb":{"@id":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/estimating-stand-attributes-boreal-forest-using-digital-aerial-photography-shadow-fraction-method\/#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":"Estimating stand attributes of boreal forest using digital aerial photography and a shadow fraction method"}]},{"@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\/82240","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\/82240\/revisions"}],"wp:attachment":[{"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/media?parent=82240"}],"wp:term":[{"taxonomy":"cptt_secteur","embeddable":true,"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/cptt_secteur?post=82240"},{"taxonomy":"cptt_theme","embeddable":true,"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/cptt_theme?post=82240"},{"taxonomy":"cptt_categ_publi","embeddable":true,"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/cptt_categ_publi?post=82240"},{"taxonomy":"cptt_auteurs_ministeriels","embeddable":true,"href":"https:\/\/mrnf.gouv.qc.ca\/en\/wp-json\/wp\/v2\/cptt_auteurs_ministeriels?post=82240"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}