{"id":302190,"date":"2025-02-14T12:36:20","date_gmt":"2025-02-14T17:36:20","guid":{"rendered":"https:\/\/web.fpinnovations.ca\/?page_id=302190"},"modified":"2026-08-07T14:38:23","modified_gmt":"2026-08-07T18:38:23","slug":"sylviculturemecanisee-contraintes","status":"publish","type":"page","link":"https:\/\/web.fpinnovations.ca\/fr\/sylviculturemecanisee-contraintes\/","title":{"rendered":"Sylviculture m\u00e9canis\u00e9e &#8211; Fiches Contraintes"},"content":{"rendered":"<div class=\"wpb-content-wrapper\" id=\"wpb-content-root\"><p>[vc_section css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb css=\u00a0\u00bb.vc_custom_1739465217791{padding-right: 20px !important;padding-left: 20px !important;}\u00a0\u00bb][vc_row full_width=\u00a0\u00bbstretch_row_content\u00a0\u00bb content_placement=\u00a0\u00bbmiddle\u00a0\u00bb background_position_desktop=\u00a0\u00bbcenter center\u00a0\u00bb css=\u00a0\u00bb.vc_custom_1739465229256{padding-left: 20px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/4&Prime;][vc_single_image image=\u00a0\u00bb302158&Prime; img_size=\u00a0\u00bb300 x 41&Prime; onclick=\u00a0\u00bbcustom_link\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb link=\u00a0\u00bbhttps:\/\/web.fpinnovations.ca\/fr\/sylviculture-mecanisee2\/\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb3\/4&Prime; thegem_content_alignment=\u00a0\u00bbcenter\u00a0\u00bb][vc_empty_space height=\u00a0\u00bb10px\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h5\" style=\"text-align: center;\"><span style=\"color: #000000;\"><a style=\"color: #000000;\" href=\"https:\/\/web.fpinnovations.ca\/fr\/sylviculture-mecanisee2\/\">Contexte<\/a>\u00a0 \u00a0 \u00a0 \u00a0\u00a0<span style=\"color: #339966;\"><a style=\"color: #339966;\" href=\"https:\/\/web.fpinnovations.ca\/fr\/roly0poly02-sylvi-meca0212-25-ensem\/\">Ensemencement<\/a><\/span> \u00a0 \u00a0 \u00a0\u00a0<span style=\"color: #339966;\"><a style=\"color: #339966;\" href=\"https:\/\/web.fpinnovations.ca\/fr\/https-web-fpinnovations-ca-fr-roly0poly02-sylvi-meca0212-25-planta\/\">Plantation<\/a>\u00a0 \u00a0 \u00a0 \u00a0Entretien<\/span><\/span><\/div>\n<p>[\/vc_column_text][vc_empty_space height=\u00a0\u00bb10px\u00a0\u00bb][\/vc_column][\/vc_row][\/vc_section][vc_section full_width=\u00a0\u00bbstretch_row_content\u00a0\u00bb parallax=\u00a0\u00bbcontent-moving\u00a0\u00bb parallax_image=\u00a0\u00bb302197&Prime; parallax_speed_bg=\u00a0\u00bb1.1&Prime;][vc_row][vc_column width=\u00a0\u00bb1\/6&Prime; css=\u00a0\u00bb.vc_custom_1739467356771{padding-left: 40px !important;}\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_empty_space height=\u00a0\u00bb25px\u00a0\u00bb][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<h3 style=\"text-align: left;\"><span style=\"color: #000000;\">Contraintes\u00a0<\/span><\/h3>\n<p>[\/vc_column_text][vc_empty_space height=\u00a0\u00bb10px\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb1\/6&Prime;][\/vc_column][\/vc_row][\/vc_section][vc_section content_placement=\u00a0\u00bbmiddle\u00a0\u00bb css=\u00a0\u00bb.vc_custom_1739984496143{background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}\u00a0\u00bb][vc_row][vc_column][vc_column_text css=\u00a0\u00bb.vc_custom_1785956910222{padding-top: 0px !important;}\u00a0\u00bb]<\/p>\n<div class=\"styled-subtitle\"><span style=\"color: #333333;\">Les contraintes op\u00e9rationnelles peuvent poser de r\u00e9els enjeux dans la r\u00e9alisation des op\u00e9rations foresti\u00e8res, telles que la prise de risque, l\u2019augmentation des co\u00fbts, l\u2019impossibilit\u00e9 d\u2019effectuer les travaux, voire des d\u00e9lais d\u2019op\u00e9rations. Les terrains \u00e0 op\u00e9rer sont souvent \u00e9loign\u00e9s. Anticiper les contraintes sur le terrain sans avoir \u00e0 s\u2019y d\u00e9placer physiquement repr\u00e9sente donc un avantage pour une planification r\u00e9ussie.<\/span><\/div>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1785957727255{background-color: #F4F4F4 !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_column_text css=\u00a0\u00bb.vc_custom_1785957144160{padding-top: 0px !important;}\u00a0\u00bb]Pour optimiser le passage des machines en amont des op\u00e9rations foresti\u00e8res, il est important :<\/p>\n<ul>\n<li>de conna\u00eetre les seuils op\u00e9rationnels des <a href=\"https:\/\/web.fpinnovations.ca\/fr\/sylviculture-mecanisee2\/#smentrepreneurs\">machines utilis\u00e9es<\/a> ;<\/li>\n<li>de cartographier les zones de terrain qui d\u00e9passent ces seuils;<\/li>\n<li>d\u2019\u00e9valuer le nombre de contraintes op\u00e9rationnelles s\u2019accumulant dans les zones \u00e0 risque.<\/li>\n<\/ul>\n<p>Des m\u00e9thodes existent pour \u00e9valuer la pr\u00e9sence de contraintes op\u00e9rationnelles [Atlas des contraintes], mais, pour le moment, aucune ne r\u00e9pond \u00e0 tous les besoins et n\u2019est disponible \u00e0 une \u00e9chelle op\u00e9rationnelle. FPInnovations et le CERFO travaillent conjointement pour d\u00e9velopper une m\u00e9thode d\u2019analyse \u00ab multicontraintes \u00bb afin d\u2019outiller les op\u00e9rateurs dans leur planification. Cependant, comment rep\u00e9rer efficacement les contraintes op\u00e9rationnelles? L\u2019imagerie satellitaire de haute r\u00e9solution, l\u2019imagerie a\u00e9rienne ou encore les connaissances actuelles du terrain : quelles ressources permettent de d\u00e9tecter ces contraintes?<\/p>\n<p>L\u2019objectif de ce travail est de trouver le meilleur \u00e9quilibre entre le co\u00fbt des donn\u00e9es, sur lesquelles se basent les analyses, le niveau de r\u00e9solution de l\u2019information fournie (taille du pixel) et la fiabilit\u00e9 des r\u00e9sultats (validation terrain).<\/p>\n<p>Vous trouverez ci-dessous un ensemble de fiches vulgaris\u00e9es des contraintes op\u00e9rationnelles sur lesquelles nous concentrons nos efforts, ainsi que des exemples de carte. La r\u00e9solution des cartes est pour le moment de 10 m \u00d7 10 m.[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][vc_single_image image=\u00a0\u00bb305286&Prime; img_size=\u00a0\u00bbfull\u00a0\u00bb add_caption=\u00a0\u00bbyes\u00a0\u00bb onclick=\u00a0\u00bbcustom_link\u00a0\u00bb img_link_target=\u00a0\u00bb_blank\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb link=\u00a0\u00bbhttps:\/\/web.fpinnovations.ca\/fr\/305454-2\/\u00a0\u00bb][\/vc_column][\/vc_row][vc_row full_width=\u00a0\u00bbstretch_row\u00a0\u00bb css=\u00a0\u00bb.vc_custom_1785964669301{background-color: #FFFFFF00 !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/12&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><a href=\"#pierrosite\"><strong>Pierrosit\u00e9 potentielle<\/strong><\/a><\/p>\n<p>[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb2\/12&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><a href=\"#sols\"><strong>Sols minces et rugosit\u00e9<\/strong><\/a><\/p>\n<p>[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb3\/12&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><a href=\"#humidite\"><strong>Capacit\u00e9 portante du sol :<br \/>\nhumidit\u00e9<\/strong><\/a>[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb3\/12&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><a href=\"#cours\"><strong>Cours d\u2019eau :<br \/>\nlits d\u2019\u00e9coulements potentiels<\/strong><\/a>[\/vc_column_text][\/vc_column][vc_column width=\u00a0\u00bb2\/12&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><a href=\"#pentes\"><b>Pentes<\/b><\/a><\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=\u00a0\u00bbstretch_row_content_no_spaces\u00a0\u00bb][vc_column][vc_separator css=\u00a0\u00bb\u00a0\u00bb][\/vc_column][\/vc_row][\/vc_section][vc_row][vc_column css_animation=\u00a0\u00bbfadeInDown\u00a0\u00bb][vc_empty_space height=\u00a0\u00bb50px\u00a0\u00bb][vc_icon icon_fontawesome=\u00a0\u00bbfas fa-angle-double-down\u00a0\u00bb color=\u00a0\u00bbgreen\u00a0\u00bb size=\u00a0\u00bblg\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb][\/vc_column][\/vc_row][vc_section][vc_row el_id=\u00a0\u00bbpierrosite\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<h3><span style=\"color: #333333;\">Pierrosit\u00e9 potentielle<\/span><\/h3>\n<p>[\/vc_column_text][vc_empty_space][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][vc_btn title=\u00a0\u00bbPrint\u00a0\u00bb color=\u00a0\u00bborange\u00a0\u00bb i_icon_fontawesome=\u00a0\u00bbfa fa-solid fa-print\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb add_icon=\u00a0\u00bbtrue\u00a0\u00bb link=\u00a0\u00bburl:https%3A%2F%2Fweb.fpinnovations.ca%2Fwp-content%2Fuploads%2FFiche-Contraintes-Pierrosite-potentielle-.pdf\u00a0\u00bb][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_tta_tabs color=\u00a0\u00bbblack\u00a0\u00bb active_section=\u00a0\u00bb1&Prime; css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb][vc_tta_section title=\u00a0\u00bbD\u00e9finition\u00a0\u00bb tab_id=\u00a0\u00bb1785959468202-2df38acf-2e3d\u00a0\u00bb][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]La pierrosit\u00e9 du sol correspond au volume de sol (%) qui est constitu\u00e9 de particules rocheuses de plus de 2 mm de diam\u00e8tre. La pierrosit\u00e9 elle-m\u00eame n\u2019a pas forc\u00e9ment d\u2019impact sur le d\u00e9placement des machines, mais elle peut nuire consid\u00e9rablement aux op\u00e9rations de remise en production.<\/p>\n<p>Un niveau de pierrosit\u00e9 trop \u00e9lev\u00e9 peut interf\u00e9rer avec le scarifiage du sol ou la plantation des arbres, limitant ainsi la qualit\u00e9 de la remise en production d\u2019un site. La cartographie de la pierrosit\u00e9 permet d\u2019identifier les secteurs o\u00f9 les machines risquent d\u2019\u00e9prouver des difficult\u00e9s d\u2019op\u00e9ration. Plus largement, cela permettrait d\u2019orienter le choix de type de reboisement pour un site donn\u00e9 (reboisement manuel, planteuse m\u00e9canique, drones d\u2019ensemencement).<\/p>\n<p><strong><a href=\"https:\/\/web.fpinnovations.ca\/fr\/roly0poly02-sylvi-meca0212-25-ensem\/#1743623330523-b1cad5b7-f3da\">Drones de reboisement<\/a><\/strong><br \/>\n<strong><a href=\"https:\/\/web.fpinnovations.ca\/fr\/roly0poly02-sylvi-meca0212-25-ensem\/#terrestre\">S35<\/a><\/strong><br \/>\n<strong><a href=\"https:\/\/web.fpinnovations.ca\/fr\/https-web-fpinnovations-ca-fr-roly0poly02-sylvi-meca0212-25-planta\/#placeau\">Plantmax<\/a><\/strong>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][vc_tta_section title=\u00a0\u00bbM\u00e9thode de d\u00e9tection\u00a0\u00bb tab_id=\u00a0\u00bb1785959468308-3fabccd3-9b6d\u00a0\u00bb][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]l est pr\u00e9sentement difficile de mesurer ou d\u00e9tecter \u00e0 large \u00e9chelle la pierrosit\u00e9 d\u2019un sol. La m\u00e9thode de d\u00e9tection pr\u00e9sent\u00e9e ici se base sur des donn\u00e9es empiriques r\u00e9colt\u00e9es au cours des derni\u00e8res d\u00e9cennies.<\/p>\n<p>La carte produite est issue d\u2019une analyse g\u00e9omorphologique et de trois sources de donn\u00e9es : la carte \u00e9coforesti\u00e8re, les points d\u2019observation \u00e9cologique et les r\u00e9gions \u00e9cologiques. La base de l\u2019analyse repose essentiellement sur les donn\u00e9es de d\u00e9p\u00f4ts de surface de la carte \u00e9coforesti\u00e8re. Ceux-ci ont \u00e9t\u00e9 photo-interpr\u00e9t\u00e9s pour l\u2019ensemble du Qu\u00e9bec m\u00e9ridional et donnent une bonne indication du niveau g\u00e9n\u00e9ral de pierrosit\u00e9 des sols. Pour un d\u00e9p\u00f4t de surface donn\u00e9, il peut y avoir diff\u00e9rents niveaux de pierrosit\u00e9 en fonction de la r\u00e9gion \u00e9cologique dans laquelle on se trouve. \u00c0 partir des 28\u202f000 points d\u2019observation \u00e9cologique, une moyenne de pierrosit\u00e9 a \u00e9t\u00e9 calcul\u00e9e par type de d\u00e9p\u00f4t de surface et par r\u00e9gion \u00e9cologique. Les peuplements \u00e9coforestiers ont ainsi \u00e9t\u00e9 class\u00e9s selon leur niveau moyen de pierrosit\u00e9. La carte finale est issue d\u2019un r\u00e9\u00e9chantillonnage \u00e0 une r\u00e9solution spatiale de 10 m.[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<strong>Voici les classes utilis\u00e9es dans cette cartographie\u202f:<\/strong>[\/vc_column_text]<div class=\"gem-table gem-table-responsive gem-table-style-1\"><table style=\"width: 100%;\">\n<thead>\n<tr>\n<th>\n<h6>Indice<\/h6>\n<\/th>\n<th>\n<h6>Classe<\/h6>\n<\/th>\n<th>\n<h6>Description<\/h6>\n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>Pierrosit\u00e9 nulle (0 % \u00e0 10 %)<\/td>\n<td>Principalement les d\u00e9p\u00f4ts marins, lacustres et autres d\u00e9p\u00f4ts s\u00e9dimentaires<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>Pierrosit\u00e9 faible (10 % \u00e0 30 %)<\/td>\n<td>D\u00e9p\u00f4ts alluviaux et delta\u00efques<\/td>\n<\/tr>\n<tr>\n<td>4 \u00e0 9<\/td>\n<td>Pierrosit\u00e9 mod\u00e9r\u00e9e \u00e0 \u00e9lev\u00e9e (30 % \u00e0 50 %)<\/td>\n<td>D\u00e9p\u00f4ts glaciaires et fluvioglaciaires avec pond\u00e9ration selon la r\u00e9gion \u00e9cologique<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>Pierrosit\u00e9 tr\u00e8s \u00e9lev\u00e9e (&gt;50 %)<\/td>\n<td>Substrat rocheux et autres formations rocheuses<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][vc_tta_section title=\u00a0\u00bbIntrants\u00a0\u00bb tab_id=\u00a0\u00bb1785959468470-8a030d0b-6b48&Prime;][vc_row_inner][vc_column_inner width=\u00a0\u00bb1\/3&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.donneesquebec.ca\/recherche\/dataset\/resultats-d-inventaire-et-carte-ecoforestiere\"><strong>D\u00e9p\u00f4ts de surface<\/strong><\/a><br \/>\n(Carte \u00e9coforesti\u00e8re)[\/vc_column_text][\/vc_column_inner][vc_column_inner width=\u00a0\u00bb1\/3&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.donneesquebec.ca\/recherche\/dataset\/points-observation-ecologique\"><strong>Pierrosit\u00e9 des points<br \/>\n<\/strong><strong>d\u2019observation \u00e9cologique<\/strong><\/a>[\/vc_column_text][\/vc_column_inner][vc_column_inner width=\u00a0\u00bb1\/3&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.donneesquebec.ca\/recherche\/fr\/dataset\/systeme-hierarchique-de-classification-ecologique-du-territoire\"><strong>R\u00e9gions \u00e9cologiques <\/strong><\/a><\/p>\n<p>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][\/vc_tta_tabs][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][vc_masonry_media_grid style=\u00a0\u00bbload-more\u00a0\u00bb items_per_page=\u00a0\u00bb2&Prime; element_width=\u00a0\u00bb12&Prime; css=\u00a0\u00bb\u00a0\u00bb btn_color=\u00a0\u00bbgreen\u00a0\u00bb btn_size=\u00a0\u00bbsm\u00a0\u00bb btn_i_icon_fontawesome=\u00a0\u00bbfa fa-solid fa-play\u00a0\u00bb btn_add_icon=\u00a0\u00bbtrue\u00a0\u00bb grid_id=\u00a0\u00bbvc_gid:1786127862162-fd2da52b-4b98-8&Prime; include=\u00a0\u00bb305303,305305,305307,305309,305311,305313&Prime;][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb3\/12&Prime; css_animation=\u00a0\u00bbnone\u00a0\u00bb]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Co\u00fbt<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Faible<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> L\u2019ensemble des donn\u00e9es utilis\u00e9es pour la cartographie de la pierrosit\u00e9 est gratuit et disponible \u00e0 partir du site Donn\u00e9es Qu\u00e9bec.<\/div>\n<p>[\/vc_column_text][vc_empty_space height=\u00a0\u00bb20px\u00a0\u00bb]<\/div><\/div><\/div>[\/vc_column][vc_column width=\u00a0\u00bb4\/12&Prime;]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Effort<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Mod\u00e9r\u00e9e<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> Connaissances en syst\u00e8me d\u2019information g\u00e9ographique et en programmation (p. ex. Python, ModelBuilder) n\u00e9cessaires pour combiner les diff\u00e9rentes sources de donn\u00e9es, effectuer les calculs d\u2019attribut et le r\u00e9\u00e9chantillonnage \u00e0 la r\u00e9solution souhait\u00e9e.<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][vc_column width=\u00a0\u00bb5\/12&Prime;]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Fiabilit\u00e9<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Mod\u00e9r\u00e9e<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> La fiabilit\u00e9 de la couche de pierrosit\u00e9 est consid\u00e9r\u00e9e comme mod\u00e9r\u00e9e en raison de l\u2019utilisation des d\u00e9p\u00f4ts de surface. Ceux-ci peuvent comporter des impr\u00e9cisions, car ils ont \u00e9t\u00e9 cartographi\u00e9s par photo-interpr\u00e9tation.<\/div>\n<div class=\"small-body\">\u00c0 notre connaissance, il n\u2019existe pour le moment aucune m\u00e9thode plus fiable pour \u00e9valuer la pierrosit\u00e9 d\u2019un sol \u00e0 large \u00e9chelle \u00e0 une pr\u00e9cision op\u00e9rationnelle.<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1785959199040{background-color: #FFFFFF00 !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/2&Prime;][vc_single_image image=\u00a0\u00bb305301&Prime; img_size=\u00a0\u00bblarge\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb1\/2&Prime; css_animation=\u00a0\u00bbfadeInDown\u00a0\u00bb]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #FFFFFF;background-color: #21650E;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<strong><span style=\"color: #ffffff;\">Limites<\/span><\/strong><\/p>\n<p><span style=\"color: #ffffff;\">La pierrosit\u00e9 moyenne par d\u00e9p\u00f4t de surface pour chaque r\u00e9gion \u00e9cologique repose sur une interpr\u00e9tation de donn\u00e9es empiriques. Il est donc possible que le niveau de pierrosit\u00e9 observ\u00e9 sur le terrain diff\u00e8re des pr\u00e9dictions de notre cartographie<\/span>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column css_animation=\u00a0\u00bbfadeInDown\u00a0\u00bb][vc_empty_space height=\u00a0\u00bb50px\u00a0\u00bb][vc_icon icon_fontawesome=\u00a0\u00bbfas fa-angle-double-down\u00a0\u00bb color=\u00a0\u00bbgreen\u00a0\u00bb size=\u00a0\u00bblg\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb][\/vc_column][\/vc_row][\/vc_section][vc_section][vc_row el_id=\u00a0\u00bbsols\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<h3><span style=\"color: #333333;\">Sols minces et rugosit\u00e9<\/span><\/h3>\n<p>[\/vc_column_text][vc_empty_space][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][vc_btn title=\u00a0\u00bbPrint\u00a0\u00bb color=\u00a0\u00bborange\u00a0\u00bb i_icon_fontawesome=\u00a0\u00bbfa fa-solid fa-print\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb add_icon=\u00a0\u00bbtrue\u00a0\u00bb][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_tta_tabs color=\u00a0\u00bbblack\u00a0\u00bb active_section=\u00a0\u00bb1&Prime; css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb][vc_tta_section title=\u00a0\u00bbD\u00e9finition\u00a0\u00bb tab_id=\u00a0\u00bb1785962261682-c1379555-930c\u00a0\u00bb][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]Un sol mince est, selon la d\u00e9finition foresti\u00e8re, un sol avec une \u00e9paisseur de d\u00e9p\u00f4t de moins de 25 cm ou de moins de 50 cm avec des affleurements rocheux fr\u00e9quents. Les sols minces sont g\u00e9n\u00e9ralement reconnaissables sur un mod\u00e8le num\u00e9rique de terrain d\u00e9riv\u00e9 des donn\u00e9es lidar gr\u00e2ce \u00e0 leur rugosit\u00e9 apparente. Les sols minces peuvent emp\u00eacher la circulation des machines lors des op\u00e9rations foresti\u00e8res s\u2019il y a pr\u00e9sence d\u2019escarpements (changement abrupt de la topographie) ou de champs de blocs erratiques (gros blocs rocheux).<\/p>\n<p>La pr\u00e9sence de sols minces peut rendre difficiles, voire impossibles, la plantation et la pr\u00e9paration du sol, et peut mener \u00e0 un \u00e9chec de reboisement.<\/p>\n<p><strong><a href=\"https:\/\/web.fpinnovations.ca\/fr\/roly0poly02-sylvi-meca0212-25-ensem\/#1743623330523-b1cad5b7-f3da\">Drones de reboisement<\/a><\/strong><br \/>\n<strong><a href=\"https:\/\/web.fpinnovations.ca\/fr\/https-web-fpinnovations-ca-fr-roly0poly02-sylvi-meca0212-25-planta\/#placeau\">Plantmax<\/a><\/strong>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][vc_tta_section title=\u00a0\u00bbM\u00e9thode de d\u00e9tection\u00a0\u00bb tab_id=\u00a0\u00bb1785962261753-04362069-04f1&Prime;][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]Les sols minces se d\u00e9tectent principalement \u00e0 partir du mod\u00e8le num\u00e9rique de terrain issu du lidar. En se<br \/>\nservant de ce mod\u00e8le, des analyses de rugosit\u00e9 sont faites \u00e0 plusieurs \u00e9chelles spatiales. Une valeur<br \/>\nmoyenne de rugosit\u00e9 est calcul\u00e9e \u00e0 partir des r\u00e9sultats obtenus aux diff\u00e9rentes \u00e9chelles spatiales. Cet indice<br \/>\nde rugosit\u00e9 est ensuite s\u00e9par\u00e9 en plusieurs classes en se basant sur des seuils \u00e9tablis par photo\u0002interpr\u00e9tation fine. Les donn\u00e9es sont ensuite r\u00e9\u00e9chantillonn\u00e9es \u00e0 10 m selon la valeur du 75e percentile. En<br \/>\nproc\u00e9dant de cette fa\u00e7on, les valeurs extr\u00eames sont retir\u00e9es et les r\u00e9sultats sont plus repr\u00e9sentatifs des<br \/>\nvaleurs dominantes.[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<strong>Voici les classes utilis\u00e9es dans cette cartographie\u202f:<\/strong>[\/vc_column_text]<div class=\"gem-table gem-table-responsive gem-table-style-1\"><table style=\"width: 100%;\">\n<thead>\n<tr>\n<th>\n<h6>Indice<\/h6>\n<\/th>\n<th>\n<h6>Classe<\/h6>\n<\/th>\n<th>\n<h6>Description<\/h6>\n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>0 &#8211; 3<\/td>\n<td>Rugosit\u00e9 nulle<\/td>\n<td>Pas de sols minces<\/td>\n<\/tr>\n<tr>\n<td>3 &#8211; 4<\/td>\n<td>Rugosit\u00e9 faible<\/td>\n<td>L\u00e9g\u00e8re variation de topographie, pas de sols minces<\/td>\n<\/tr>\n<tr>\n<td>4 &#8211; 6<\/td>\n<td>Rugosit\u00e9 mod\u00e9r\u00e9e<\/td>\n<td>Variations topographiques et\/ou pr\u00e9sence de sol mince<\/td>\n<\/tr>\n<tr>\n<td>6 &#8211; 8<\/td>\n<td>Rugosit\u00e9 \u00e9lev\u00e9e<\/td>\n<td>Sols minces et\/ou affleurements rocheux et\/ou variations topographiques<\/td>\n<\/tr>\n<tr>\n<td>8 &#8211; 10<\/td>\n<td>Rugosit\u00e9 tr\u00e8s \u00e9lev\u00e9e<\/td>\n<td>Sols minces et\/ou affleurements rocheux et\/ou variations topographiques<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][vc_tta_section title=\u00a0\u00bbIntrants\u00a0\u00bb tab_id=\u00a0\u00bb1785962261869-9d3cda37-9185&Prime;][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: left;\"><strong><a href=\"https:\/\/www.donneesquebec.ca\/recherche\/fr\/dataset\/produits-derives-de-base-du-lidar\">Mod\u00e8le num\u00e9rique de terrain issu du lidar<\/a><\/strong><\/p>\n<p>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][\/vc_tta_tabs][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][vc_masonry_media_grid style=\u00a0\u00bbload-more\u00a0\u00bb items_per_page=\u00a0\u00bb2&Prime; element_width=\u00a0\u00bb12&Prime; css=\u00a0\u00bb\u00a0\u00bb btn_color=\u00a0\u00bbgreen\u00a0\u00bb btn_size=\u00a0\u00bbsm\u00a0\u00bb btn_i_icon_fontawesome=\u00a0\u00bbfa fa-solid fa-play\u00a0\u00bb btn_add_icon=\u00a0\u00bbtrue\u00a0\u00bb grid_id=\u00a0\u00bbvc_gid:1786127862171-927faf7b-b03f-3&Prime; include=\u00a0\u00bb305342,305344,305346,305348,305350,305352,305354,305356,305358&Prime;][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb1\/3&Prime; css_animation=\u00a0\u00bbnone\u00a0\u00bb]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Co\u00fbt<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Faible<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> Le mod\u00e8le num\u00e9rique de terrain issu du lidar peut \u00eatre t\u00e9l\u00e9charg\u00e9 gratuitement \u00e0 partir du portail de donn\u00e9es ouvertes du gouvernement du Qu\u00e9bec.<\/div>\n<p>[\/vc_column_text][vc_empty_space height=\u00a0\u00bb15px\u00a0\u00bb]<\/div><\/div><\/div>[\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Effort<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Mod\u00e9r\u00e9e<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> La production de l\u2019indice de rugosit\u00e9 requiert l\u2019utilisation d\u2019un algorithme sp\u00e9cialis\u00e9 qui n\u2019est pas int\u00e9gr\u00e9 par d\u00e9faut dans les syst\u00e8mes d\u2019information g\u00e9ographique. L\u2019installation et l\u2019utilisation de cet algorithme peuvent s\u2019av\u00e9rer probl\u00e9matiques pour un utilisateur d\u00e9butant.<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Fiabilit\u00e9<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Mod\u00e9r\u00e9e<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> L\u2019utilisation de l\u2019indice de rugosit\u00e9 pour l\u2019identification des sols minces est novatrice, et comporte donc certaines limites. La fiabilit\u00e9 de ce produit est estim\u00e9e comme bonne selon les donn\u00e9es de sols minces disponibles, mais la fiabilit\u00e9 \u00e0 large \u00e9chelle reste \u00e0 prouver.<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1785959199040{background-color: #FFFFFF00 !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/2&Prime;][vc_single_image image=\u00a0\u00bb305340&Prime; img_size=\u00a0\u00bblarge\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb1\/2&Prime; css_animation=\u00a0\u00bbfadeInDown\u00a0\u00bb]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #FFFFFF;background-color: #21650E;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<strong><span style=\"color: #ffffff;\">Limites<\/span><\/strong><\/p>\n<p><span style=\"color: #ffffff;\">La topographie contribue \u00e0 la rugosit\u00e9. \u00c0 cet effet, les routes, les chemins, les escarpements et la microtopographie sont consid\u00e9r\u00e9s comme ayant une rugosit\u00e9 \u00e9lev\u00e9e en raison des changements rapides d\u2019\u00e9l\u00e9vation. Cette anomalie peut se r\u00e9soudre en superposant une couche du r\u00e9seau routier.<\/span>[\/vc_column_text]<\/div><\/div><\/div><div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #FFFFFF;background-color: #000000;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<strong><span style=\"color: #ffffff;\">En savoir +<\/span><\/strong><\/p>\n<p><span style=\"color: #ffffff;\">Vid\u00e9o d\u2019introduction: <a href=\"https:\/\/www.youtube.com\/watch?v=M4Ho26PsVo8\">Les produits d\u00e9riv\u00e9s de base du lidar (MRNF)<\/a><\/span><\/p>\n<p><span style=\"color: #ffffff;\">Autoformation compl\u00e8te et gratuite sur <a href=\"https:\/\/formation.cerfo.quebec\/catalog\/topCategory\/operation-lidar\/2\">l\u2019utilisation des produits d\u00e9riv\u00e9s du lidar (CERFO) <\/a><\/span>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column css_animation=\u00a0\u00bbfadeInDown\u00a0\u00bb][vc_empty_space height=\u00a0\u00bb50px\u00a0\u00bb][vc_icon icon_fontawesome=\u00a0\u00bbfas fa-angle-double-down\u00a0\u00bb color=\u00a0\u00bbgreen\u00a0\u00bb size=\u00a0\u00bblg\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb][\/vc_column][\/vc_row][\/vc_section][vc_section][vc_row el_id=\u00a0\u00bbhumidite\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<h3><span style=\"color: #333333;\">Capacit\u00e9 portante du sol : humidit\u00e9<\/span><\/h3>\n<p>[\/vc_column_text][vc_empty_space][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][vc_btn title=\u00a0\u00bbPrint\u00a0\u00bb color=\u00a0\u00bborange\u00a0\u00bb i_icon_fontawesome=\u00a0\u00bbfa fa-solid fa-print\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb add_icon=\u00a0\u00bbtrue\u00a0\u00bb][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_tta_tabs color=\u00a0\u00bbblack\u00a0\u00bb active_section=\u00a0\u00bb1&Prime; css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb][vc_tta_section title=\u00a0\u00bbD\u00e9finition\u00a0\u00bb tab_id=\u00a0\u00bb1785965540230-52fa6ad9-c1c4&Prime;][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]La capacit\u00e9 portante repr\u00e9sente la capacit\u00e9 d\u2019un sol \u00e0 supporter le passage de la machinerie. Dans les op\u00e9rations foresti\u00e8res, la capacit\u00e9 portante est g\u00e9n\u00e9ralement corr\u00e9l\u00e9e avec l\u2019humidit\u00e9 du sol. Un sol trop humide aura peu de portance et risque de ralentir ou emp\u00eacher les op\u00e9rations. Les orni\u00e8res cr\u00e9\u00e9es lors des op\u00e9rations sur des sols non portants provoquent un compactage du sol, une \u00e9rosion accrue et une modification des processus hydrologiques naturels. \u00c0 long terme, l\u2019orni\u00e9rage peut \u00e9galement provoquer une diminution de la productivit\u00e9 foresti\u00e8re.<\/p>\n<p>Bien planifier ses op\u00e9rations dans des zones moins portantes permet d\u2019att\u00e9nuer les impacts environnementaux et \u00e9conomiques li\u00e9s \u00e0 l\u2019orni\u00e9rage[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][vc_tta_section title=\u00a0\u00bbM\u00e9thode de d\u00e9tection\u00a0\u00bb tab_id=\u00a0\u00bb1785965540340-3e8817b7-087f\u00a0\u00bb][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]L\u2019humidit\u00e9 du sol est principalement li\u00e9e \u00e0 deux param\u00e8tres : la topographie locale et le type de d\u00e9p\u00f4t de surface. Gr\u00e2ce \u00e0 l\u2019indice d\u2019humidit\u00e9 topographique (TWI : topographic wetness index), il est possible d\u2019\u00e9valuer la tendance du sol \u00e0 accumuler de l\u2019eau en fonction de sa topographie. Comme le TWI ne tient pas compte de la perm\u00e9abilit\u00e9 du sol, la classe de drainage issue de l\u2019inventaire \u00e9coforestier est utilis\u00e9e pour le pond\u00e9rer, afin d\u2019obtenir des r\u00e9sultats plus repr\u00e9sentatifs des conditions r\u00e9elles du terrain. La classe de drainage est habituellement calcul\u00e9e \u00e0 l\u2019aide d\u2019analyse g\u00e9omatique de plusieurs param\u00e8tres (le d\u00e9p\u00f4t de surface, la g\u00e9ologie, la pluviom\u00e9trie et l\u2019\u00e9paisseur du d\u00e9p\u00f4t) et de photo-interpr\u00e9tation. Une fois le TWI et la classe de drainage combin\u00e9s, le r\u00e9sultat est reclassifi\u00e9 et r\u00e9\u00e9chantillonn\u00e9 \u00e0 10 m de r\u00e9solution.[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<strong>Voici les classes utilis\u00e9es dans cette cartographie\u202f:<\/strong>[\/vc_column_text]<div class=\"gem-table gem-table-responsive gem-table-style-1\"><table style=\"width: 100%;\">\n<thead>\n<tr>\n<th>\n<h6>Indice<\/h6>\n<\/th>\n<th>\n<h6>Classe<\/h6>\n<\/th>\n<th>\n<h6>Description<\/h6>\n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>0 &#8211; 1<\/td>\n<td>Bonne portance du sol<\/td>\n<td>Tr\u00e8s faible humidit\u00e9 du sol et drainage 1 \u00e0 2<\/td>\n<\/tr>\n<tr>\n<td>2 &#8211; 9<\/td>\n<td>Zone de transition graduelle &lt;<\/td>\n<td>Augmentation graduelle de l\u2019humidit\u00e9 du sol, diminution graduelle de la portance, drainage 3 \u00e0 5.<br \/>\nLa machinerie peut s\u2019enliser dans certaines circonstances.<\/td>\n<\/tr>\n<tr>\n<td>9 &#8211; 10<\/td>\n<td>Tr\u00e8s faible portance du sol<\/td>\n<td>Humidit\u00e9 du sol tr\u00e8s \u00e9lev\u00e9e et drainage 5 \u00e0 6. Risque \u00e9lev\u00e9 d\u2019enlisement pour la machinerie<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][vc_tta_section title=\u00a0\u00bbIntrants\u00a0\u00bb tab_id=\u00a0\u00bb1785965540507-155e61e8-1b51&Prime;][vc_row_inner][vc_column_inner width=\u00a0\u00bb1\/2&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: left;\"><strong><a href=\"https:\/\/www.donneesquebec.ca\/recherche\/dataset\/indice-humidite-topographique-issu-du-lidar\">Indice d\u2019humidit\u00e9 topographique issu du lidar (TWI)<\/a><\/strong><\/p>\n<p>[\/vc_column_text][\/vc_column_inner][vc_column_inner width=\u00a0\u00bb1\/2&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: left;\"><a href=\"https:\/\/www.donneesquebec.ca\/recherche\/dataset\/resultats-d-inventaire-et-carte-ecoforestiere\"><strong>Classe de drainage<\/strong> (carte \u00e9coforesti\u00e8re)<\/a><\/p>\n<p>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][\/vc_tta_tabs][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][vc_masonry_media_grid style=\u00a0\u00bbload-more\u00a0\u00bb items_per_page=\u00a0\u00bb2&Prime; element_width=\u00a0\u00bb12&Prime; css=\u00a0\u00bb\u00a0\u00bb btn_color=\u00a0\u00bbgreen\u00a0\u00bb btn_size=\u00a0\u00bbsm\u00a0\u00bb btn_i_icon_fontawesome=\u00a0\u00bbfa fa-solid fa-play\u00a0\u00bb btn_add_icon=\u00a0\u00bbtrue\u00a0\u00bb grid_id=\u00a0\u00bbvc_gid:1786127862177-7f89ae72-8088-1&Prime; include=\u00a0\u00bb305371,305373,305375,305377,305379,305381,305383,305385,305387,305389,305391,305393&Prime;][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb3\/12&Prime; css_animation=\u00a0\u00bbnone\u00a0\u00bb]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Co\u00fbt<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Faible<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> Toutes les donn\u00e9es en intrant sont gratuites et disponibles sur le portail de donn\u00e9es ouvertes du gouvernement du Qu\u00e9bec.<\/div>\n<p>[\/vc_column_text][vc_empty_space height=\u00a0\u00bb15px\u00a0\u00bb]<\/div><\/div><\/div>[\/vc_column][vc_column width=\u00a0\u00bb4\/12&Prime;]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Effort<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Mod\u00e9r\u00e9e<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> La production de cette couche requiert des connaissances interm\u00e9diaires en syst\u00e8me d\u2019information g\u00e9ographique ou en programmation (p. ex. Python, R).<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][vc_column width=\u00a0\u00bb5\/12&Prime;]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Fiabilit\u00e9<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Mod\u00e9r\u00e9e<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> Le fondement de cette analyse de portance repose sur le TWI. Cet indice est utilis\u00e9 dans de nombreuses \u00e9tudes d\u2019\u00e9valuation de l\u2019humidit\u00e9 et sa fiabilit\u00e9 est \u00e9lev\u00e9e. La combinaison du TWI et des classes de drainage permet de pr\u00e9dire la portance du sol avec un niveau de confiance raisonnable, d\u2019autres facteurs peuvent n\u00e9anmoins amplifier ou diminuer celui-ci.<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1785959199040{background-color: #FFFFFF00 !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/2&Prime;][vc_single_image image=\u00a0\u00bb305369&Prime; img_size=\u00a0\u00bblarge\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb1\/2&Prime; css_animation=\u00a0\u00bbfadeInDown\u00a0\u00bb]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #FFFFFF;background-color: #21650E;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<strong><span style=\"color: #ffffff;\">Limites<\/span><\/strong><\/p>\n<p><span style=\"color: #ffffff;\">L\u2019utilisation des classes de drainage issues des polygones \u00e9coforestiers augmente globalement la<br \/>\npertinence des pr\u00e9dictions, il est cependant possible que des incoh\u00e9rences locales apparaissent dans la<br \/>\ntransition entre deux polygones<\/span>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column css_animation=\u00a0\u00bbfadeInDown\u00a0\u00bb][vc_empty_space height=\u00a0\u00bb50px\u00a0\u00bb][vc_icon icon_fontawesome=\u00a0\u00bbfas fa-angle-double-down\u00a0\u00bb color=\u00a0\u00bbgreen\u00a0\u00bb size=\u00a0\u00bblg\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb][\/vc_column][\/vc_row][\/vc_section][vc_section][vc_row el_id=\u00a0\u00bbcours\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<h3><span style=\"color: #333333;\">Cours d\u2019eau : lits d\u2019\u00e9coulements potentiels<\/span><\/h3>\n<p>[\/vc_column_text][vc_empty_space][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][vc_btn title=\u00a0\u00bbPrint\u00a0\u00bb color=\u00a0\u00bborange\u00a0\u00bb i_icon_fontawesome=\u00a0\u00bbfa fa-solid fa-print\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb add_icon=\u00a0\u00bbtrue\u00a0\u00bb][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_tta_tabs color=\u00a0\u00bbblack\u00a0\u00bb active_section=\u00a0\u00bb1&Prime; css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb][vc_tta_section title=\u00a0\u00bbD\u00e9finition\u00a0\u00bb tab_id=\u00a0\u00bb1785966850720-7806e519-9a9d\u00a0\u00bb][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]Le lit d\u2019\u00e9coulement potentiel repr\u00e9sente le trajet qu\u2019un cours d\u2019eau devrait emprunter selon la topographie.<\/p>\n<p>Les lits d\u2019\u00e9coulements potentiels peuvent \u00eatre permanents ou intermittents (ass\u00e9ch\u00e9s une partie de l\u2019ann\u00e9e). Le r\u00e8glement sur l\u2019am\u00e9nagement durable des for\u00eats du domaine de l\u2019\u00c9tat interdit de circuler avec de la machinerie foresti\u00e8re dans une zone tampon de 20 m aux abords d\u2019un cours d\u2019eau permanent et de 6 m aux abords d\u2019un cours d\u2019eau intermittent. La protection des cours d\u2019eau permet de limiter l\u2019impact des op\u00e9rations foresti\u00e8res sur les milieux hydriques et humides en milieu forestier. En utilisant les donn\u00e9es sur les lits d\u2019\u00e9coulements potentiels issues des donn\u00e9es lidar, une cartographie des zones de cours d\u2019eau \u00e0 \u00e9viter est r\u00e9alis\u00e9e[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][vc_tta_section title=\u00a0\u00bbM\u00e9thode de d\u00e9tection\u00a0\u00bb tab_id=\u00a0\u00bb1785966850856-a3c7e3b3-447c\u00a0\u00bb][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]Les donn\u00e9es de lits d\u2019\u00e9coulements potentiels sont repr\u00e9sent\u00e9es sous forme de lignes. La premi\u00e8re \u00e9tape est d\u2019appliquer une zone tampon selon les distances pr\u00e9vues par la loi (6 et 20 m). Bien que la loi ne stipule rien sur les zones d\u2019intermittences, certaines de ces zones d\u2019intermittences peuvent en r\u00e9alit\u00e9 s\u2019av\u00e9rer \u00eatre<br \/>\ndes cours d\u2019eau intermittents. Pour consid\u00e9rer cette r\u00e9alit\u00e9, les zones d\u2019intermittences ont \u00e9t\u00e9 utilis\u00e9es. La cartographie finale a une r\u00e9solution spatiale de 10 m.[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<strong>Voici les classes utilis\u00e9es dans cette cartographie\u202f:<\/strong>[\/vc_column_text]<div class=\"gem-table gem-table-responsive gem-table-style-1\"><table style=\"width: 100%;\">\n<thead>\n<tr>\n<th>\n<h6>Indice<\/h6>\n<\/th>\n<th>\n<h6>Classe<\/h6>\n<\/th>\n<th>\n<h6>Description<\/h6>\n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u00a0 1<\/td>\n<td>Pas de cours d\u2019eau<\/td>\n<td>Aucune restriction aux op\u00e9rations li\u00e9es aux cours d\u2019eau permanents et intermittents.<\/td>\n<\/tr>\n<tr>\n<td>\u00a0 5<\/td>\n<td>Zone d\u2019intermittence<\/td>\n<td>Secteur se trouvant dans un rayon de 6 m d\u2019une zone d\u2019intermittence.<\/td>\n<\/tr>\n<tr>\n<td>\u00a0 10<\/td>\n<td>Zones de cours d\u2019eau<\/td>\n<td>Secteurs se trouvant dans un rayon de 20 m d\u2019un cours d\u2019eau permanent ou d\u2019une zone de permanence.<br \/>\nSecteurs se trouvant dans un rayon de 6 m d\u2019un cours d\u2019eau intermittent.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][vc_tta_section title=\u00a0\u00bbIntrants\u00a0\u00bb tab_id=\u00a0\u00bb1785966851078-b4f72de0-8aa3&Prime;][vc_row_inner][vc_column_inner width=\u00a0\u00bb1\/2&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: left;\"><a href=\"https:\/\/www.donneesquebec.ca\/recherche\/dataset\/lits-d-ecoulements-potentiels-issus-du-lidar\"><b>Lits d\u2019\u00e9coulements potentiels issus du lidar<\/b><\/a><\/p>\n<p>[\/vc_column_text][\/vc_column_inner][vc_column_inner width=\u00a0\u00bb1\/2&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: left;\"><a href=\"https:\/\/mffp.gouv.qc.ca\/RADF\/guide\/chapitre-iii\/article-27\/\"><strong>R\u00e8glementation sur les lisi\u00e8res bois\u00e9es<\/strong><\/a><\/p>\n<p>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][\/vc_tta_tabs][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][vc_masonry_media_grid style=\u00a0\u00bbload-more\u00a0\u00bb items_per_page=\u00a0\u00bb2&Prime; element_width=\u00a0\u00bb12&Prime; css=\u00a0\u00bb\u00a0\u00bb btn_color=\u00a0\u00bbgreen\u00a0\u00bb btn_size=\u00a0\u00bbsm\u00a0\u00bb btn_i_icon_fontawesome=\u00a0\u00bbfa fa-solid fa-play\u00a0\u00bb btn_add_icon=\u00a0\u00bbtrue\u00a0\u00bb grid_id=\u00a0\u00bbvc_gid:1786127862187-b9404c6b-d9b7-3&Prime; include=\u00a0\u00bb305400,305402,305404,305406&Prime;][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb4\/12&Prime; css_animation=\u00a0\u00bbnone\u00a0\u00bb]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Co\u00fbt<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Faible<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> Les donn\u00e9es de lits d\u2019\u00e9coulements potentiels sont gratuites et disponibles \u00e0 tous sur le site des donn\u00e9es ouvertes du gouvernement du Qu\u00e9bec.<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][vc_column width=\u00a0\u00bb3\/12&Prime;]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Effort<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Fiable<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> La production de cette carte requiert peu de manipulations et s\u2019appuie uniquement sur des outils g\u00e9omatiques de base.<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][vc_column width=\u00a0\u00bb5\/12&Prime;]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Fiabilit\u00e9<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>\u00c9lev\u00e9e<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> Bas\u00e9es sur la topographie et les donn\u00e9es issues du lidar, les donn\u00e9es de lits d\u2019\u00e9coulements potentiels ont une bonne fiabilit\u00e9. La cartographie issue de ces donn\u00e9es est g\u00e9n\u00e9ralement fiable.<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1785959199040{background-color: #FFFFFF00 !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/2&Prime;][vc_single_image image=\u00a0\u00bb305398&Prime; img_size=\u00a0\u00bblarge\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #FFFFFF;background-color: #000000;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<strong><span style=\"color: #ffffff;\">En savoir +<\/span><\/strong><\/p>\n<p><span style=\"color: #ffffff;\">Vid\u00e9o d\u2019introduction: <a href=\"https:\/\/www.youtube.com\/watch?v=M4Ho26PsVo8\">Les produits d\u00e9riv\u00e9s de base du LIDAR (MRNF)<\/a><\/span><\/p>\n<p><span style=\"color: #ffffff;\">Autoformation compl\u00e8te et gratuite sur <a href=\"https:\/\/formation.cerfo.quebec\/catalog\/topCategory\/operation-lidar\/2\">l\u2019utilisation des produits d\u00e9riv\u00e9s du LIDAR (CERFO) <\/a><\/span>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][vc_column width=\u00a0\u00bb1\/2&Prime; css_animation=\u00a0\u00bbfadeInDown\u00a0\u00bb]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #FFFFFF;background-color: #21650E;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #ffffff;\"><strong>Limites<\/strong><\/span><\/p>\n<p><span style=\"color: #ffffff;\">Les lits d\u2019\u00e9coulements potentiels (LEP) issus du lidar sont calcul\u00e9s \u00e0 partir du Mod\u00e8le Num\u00e9rique de Terrain (MNT). Ce MNT a \u00e9t\u00e9 modifi\u00e9 pour prendre en compte les ponts et les ponceaux permettant le passage de l\u2019eau sous les routes et chemins forestiers. La base de donn\u00e9es des ponts et ponceaux est n\u00e9anmoins incompl\u00e8te, ce qui peut engendrer des erreurs dans le sens d\u2019\u00e9coulement de l\u2019eau et donc dans les lits d\u2019\u00e9coulements potentiels. Les LEP se basent \u00e9galement sur l\u2019aire de drainage et le contexte physiographique, toutefois, ces \u00e9l\u00e9ments pr\u00e9sentent aussi certaines incertitudes qui peuvent se reporter dans les LEP. Il est possible que des LEP identifi\u00e9s dans la base de donn\u00e9es ne soient pas visibles sur le terrain.<\/span><\/p>\n<p><span style=\"color: #ffffff;\">Les donn\u00e9es fournies dans ces cartes ont une valeur indicative et visent \u00e0 signaler la pr\u00e9sence potentielle de contraintes sur le terrain. Cet outil ne permet en aucun cas de d\u00e9montrer la conformit\u00e9 \u00e0 la r\u00e8glementation applicable aux cours d\u2019eau et aux lisi\u00e8res bois\u00e9es riveraines. Le respect des exigences r\u00e8glementaires doit \u00eatre valid\u00e9 par une expertise humaine et par des v\u00e9rifications terrain.<\/span>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column css_animation=\u00a0\u00bbfadeInDown\u00a0\u00bb][vc_empty_space height=\u00a0\u00bb50px\u00a0\u00bb][vc_icon icon_fontawesome=\u00a0\u00bbfas fa-angle-double-down\u00a0\u00bb color=\u00a0\u00bbgreen\u00a0\u00bb size=\u00a0\u00bblg\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb][\/vc_column][\/vc_row][\/vc_section][vc_section][vc_row el_id=\u00a0\u00bbpentes\u00a0\u00bb][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<h3><span style=\"color: #333333;\">Pentes<\/span><\/h3>\n<p>[\/vc_column_text][vc_empty_space][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][vc_btn title=\u00a0\u00bbPrint\u00a0\u00bb color=\u00a0\u00bborange\u00a0\u00bb i_icon_fontawesome=\u00a0\u00bbfa fa-solid fa-print\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb add_icon=\u00a0\u00bbtrue\u00a0\u00bb][\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb2\/3&Prime;][vc_tta_tabs color=\u00a0\u00bbblack\u00a0\u00bb active_section=\u00a0\u00bb1&Prime; css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb][vc_tta_section title=\u00a0\u00bbD\u00e9finition\u00a0\u00bb tab_id=\u00a0\u00bb1785968065074-d5ae105b-0d33&Prime;][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]Les pentes repr\u00e9sentent l\u2019inclinaison du terrain par rapport \u00e0 l\u2019horizontale. Les op\u00e9rations foresti\u00e8res peuvent \u00eatre grandement affect\u00e9es par la pr\u00e9sence de fortes pentes, celles-ci limitant ou emp\u00eachant le passage des machines.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][vc_tta_section title=\u00a0\u00bbIntrants\u00a0\u00bb tab_id=\u00a0\u00bb1785968065505-d53eb042-8e64&Prime;][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<p style=\"text-align: left;\"><a href=\"https:\/\/www.donneesquebec.ca\/recherche\/fr\/dataset\/produits-derives-de-base-du-lidar\"><b>Mod\u00e8le num\u00e9rique de terrain issu du lidar\u00a0<\/b><\/a><\/p>\n<p>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][\/vc_tta_tabs][vc_tta_tabs color=\u00a0\u00bbblack\u00a0\u00bb active_section=\u00a0\u00bb1&Prime; css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb][vc_tta_section title=\u00a0\u00bbM\u00e9thode de d\u00e9tection\u00a0\u00bb tab_id=\u00a0\u00bb1786121811509-36ad5a09-f8c3&Prime;][vc_row_inner][vc_column_inner][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]Les pentes sont calcul\u00e9es \u00e0 partir du mod\u00e8le num\u00e9rique de terrain (MNT), issu des produits lidar. La r\u00e9solution du MNT est de 1 m. Une fois les pentes calcul\u00e9es, les donn\u00e9es sont r\u00e9\u00e9chantillonn\u00e9es \u00e0 une r\u00e9solution de 10 m selon le 75e percentile. En proc\u00e9dant de cette fa\u00e7on, les valeurs extr\u00eames sont retir\u00e9es et les r\u00e9sultats sont plus repr\u00e9sentatifs des valeurs dominantes. La valeur dominante permet d\u2019\u00e9valuer si la machine peut op\u00e9rer dans la majorit\u00e9 du pixel sans \u00eatre influenc\u00e9e par des valeurs ponctuelles \u00e9lev\u00e9es.[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<strong>Voici les classes utilis\u00e9es dans cette cartographie\u202f:<\/strong>[\/vc_column_text]<div class=\"gem-table gem-table-responsive gem-table-style-1\"><table style=\"width: 100%;\">\n<thead>\n<tr>\n<th>\n<h6>Indice<\/h6>\n<\/th>\n<th>\n<h6>Classe<\/h6>\n<\/th>\n<th>\n<h6>Description<\/h6>\n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u00a0 1<\/td>\n<td>Pentes de 0 \u00e0 16 %<\/td>\n<td>Aucune restriction aux op\u00e9rations<\/td>\n<\/tr>\n<tr>\n<td>\u00a0 5<\/td>\n<td>Pentes de 17 % \u00e0 31 %<\/td>\n<td>Op\u00e9rations l\u00e9g\u00e8rement ralenties.<\/td>\n<\/tr>\n<tr>\n<td>\u00a0 8<\/td>\n<td>Pentes de 31 \u00e0 41 %<\/td>\n<td>Op\u00e9rations grandement ralenties.<\/td>\n<\/tr>\n<tr>\n<td>\u00a0 10<\/td>\n<td>Pentes sup\u00e9rieures \u00e0 42 %<\/td>\n<td>Tr\u00e8s difficile d\u2019op\u00e9rer la machinerie.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_tta_section][\/vc_tta_tabs][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Co\u00fbt<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Faible<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> Les mod\u00e8les num\u00e9riques de terrain issus du lidar sont gratuits et disponibles \u00e0 tous sur le site des donn\u00e9es ouvertes du gouvernement du Qu\u00e9bec.<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div><div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Effort<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>Fiable<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> La production de cette carte requiert peu de manipulations et s\u2019appuie uniquement sur des outils g\u00e9omatiques de base.<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div><div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #000000;background-color: #F7F7F7;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"title-h3 title-h4\"><span style=\"color: #000000;\">Fiabilit\u00e9<\/span><\/div>\n<p>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #3a9a20;\"><strong>\u00c9lev\u00e9e<\/strong><\/span>[\/vc_column_text][vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<\/p>\n<div class=\"small-body\"><strong>D\u00e9tails :<\/strong> Le calcul de pentes \u00e0 partir d\u2019un mod\u00e8le num\u00e9rique de terrain issu du lidar est extr\u00eamement fiable.<\/div>\n<p>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column width=\u00a0\u00bb1\/3&Prime; css_animation=\u00a0\u00bbnone\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][\/vc_column][vc_column width=\u00a0\u00bb1\/3&Prime;][\/vc_column][\/vc_row][vc_row css=\u00a0\u00bb.vc_custom_1785959199040{background-color: #FFFFFF00 !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/2&Prime;][vc_single_image image=\u00a0\u00bb305411&Prime; img_size=\u00a0\u00bblarge\u00a0\u00bb css=\u00a0\u00bb\u00a0\u00bb css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb1\/2&Prime; css_animation=\u00a0\u00bbfadeInDown\u00a0\u00bb]<div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #FFFFFF;background-color: #21650E;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<span style=\"color: #ffffff;\"><strong>Limites<\/strong><\/span><\/p>\n<p><span style=\"color: #ffffff;\">Par souci d\u2019homog\u00e9n\u00e9it\u00e9 avec les autres cartes de contraintes produites, cette carte a \u00e9t\u00e9 r\u00e9\u00e9chantillonn\u00e9e \u00e0 une r\u00e9solution de 10 m, bien plus grossi\u00e8re que l\u2019originale. <\/span>[\/vc_column_text]<\/div><\/div><\/div><div class=\"gem-textbox \"  ><div class=\"gem-textbox-inner\" style=\"border-top-left-radius: 20px;border-top-right-radius: 20px;border-bottom-right-radius: 20px;border-bottom-left-radius: 20px;\"><div class=\"gem-textbox-content\" style=\"color: #FFFFFF;background-color: #000000;background-position: center top;\">[vc_column_text css=\u00a0\u00bb\u00a0\u00bb]<strong><span style=\"color: #ffffff;\">En savoir +<\/span><\/strong><\/p>\n<p><span style=\"color: #ffffff;\">Vid\u00e9o d\u2019introduction: <a href=\"https:\/\/www.youtube.com\/watch?v=M4Ho26PsVo8\">Les produits d\u00e9riv\u00e9s de base du LIDAR (MRNF)<\/a><\/span><\/p>\n<p><span style=\"color: #ffffff;\">Autoformation compl\u00e8te et gratuite sur <a href=\"https:\/\/formation.cerfo.quebec\/catalog\/topCategory\/operation-lidar\/2\">l\u2019utilisation des produits d\u00e9riv\u00e9s du LIDAR (CERFO) <\/a><\/span>[\/vc_column_text]<\/div><\/div><\/div>[\/vc_column][\/vc_row][vc_row][vc_column css_animation=\u00a0\u00bbfadeInDown\u00a0\u00bb][vc_empty_space height=\u00a0\u00bb50px\u00a0\u00bb][\/vc_column][\/vc_row][\/vc_section]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_section css_animation=\u00a0\u00bbfadeIn\u00a0\u00bb css=\u00a0\u00bb.vc_custom_1739465217791{padding-right: 20px !important;padding-left: 20px !important;}\u00a0\u00bb][vc_row full_width=\u00a0\u00bbstretch_row_content\u00a0\u00bb content_placement=\u00a0\u00bbmiddle\u00a0\u00bb background_position_desktop=\u00a0\u00bbcenter center\u00a0\u00bb css=\u00a0\u00bb.vc_custom_1739465229256{padding-left: 20px !important;}\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/4&Prime;][vc_single_image image=\u00a0\u00bb302158&Prime; 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