{"id":260,"date":"2014-08-19T09:30:59","date_gmt":"2014-08-19T13:30:59","guid":{"rendered":"http:\/\/www.frfce.qc.ca\/?page_id=260"},"modified":"2014-09-15T11:09:47","modified_gmt":"2014-09-15T15:09:47","slug":"enrichissement-dune-foret-degradee-avec-le-chene-rouge-et-le-chene-a-gros-fruit","status":"publish","type":"page","link":"https:\/\/www.frfce.qc.ca\/?page_id=260","title":{"rendered":"Enrichissement d\u2019une for\u00eat d\u00e9grad\u00e9e avec le ch\u00eane rouge, le ch\u00eane \u00e0 gros fruit et le pin blanc"},"content":{"rendered":"<p><strong>Mise en contexte<\/strong><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-325 size-full\" src=\"http:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/feuilles-de-chene-rouge.jpg\" alt=\"Feuilles et glands de ch\u00eane rouge\" width=\"200\" height=\"200\" srcset=\"https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/feuilles-de-chene-rouge.jpg 200w, https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/feuilles-de-chene-rouge-150x150.jpg 150w, https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/feuilles-de-chene-rouge-50x50.jpg 50w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/p>\n<p>Depuis deux si\u00e8cles, l\u2019exploitation foresti\u00e8re \u00e0 des fins commerciales et la colonisation du territoire ont grandement appauvri les \u00e9cosyst\u00e8mes forestiers du sud du Qu\u00e9bec. Pr\u00e9sentement, les donn\u00e9es d\u2019inventaire indiquent que le territoire estrien compte plus de 100 000 hectares de for\u00eats d\u00e9grad\u00e9es. Ces for\u00eats pourraient \u00eatre restaur\u00e9es et enrichies, en bonne partie, par la plantation de feuillus nobles (ch\u00eanes, noyers, caryers, cerisiers, etc.), dont certains sont de plus en plus rares dans la r\u00e9gion. L\u2019enrichissement pourrait \u00e9galement s\u2019appliquer \u00e0 certains r\u00e9sineux de valeur, autrefois plus abondant, comme le pin blanc.<\/p>\n<p>&nbsp;<\/p>\n<p>L\u2019enrichissement de peuplements, appel\u00e9 \u00e9galement plantation en sous-couvert ou en sous-bois, consiste \u00e0 ins\u00e9rer une essence d\u00e9sir\u00e9e sous un couvert forestier d\u00e9grad\u00e9 ou arbustif, afin d\u2019acc\u00e9l\u00e9rer la succession foresti\u00e8re. Le couvert forestier sous lequel on intervient peut \u00eatre pr\u00e9alablement \u00e9clairci de fa\u00e7on naturelle (chablis, insectes) ou artificielle (coupe), ce qui favorise une bonne disponibilit\u00e9 de la lumi\u00e8re et des nutriments pour les plants rebois\u00e9s. En croissant en sous-bois, les arbres plant\u00e9s auront un port plus droit et ils b\u00e9n\u00e9ficieront d\u2019une protection accrue contre le gel, l\u2019insolation, la descente de cime, les insectes et le broutage par le cerf de Virginie.<\/p>\n<p>&nbsp;<\/p>\n<p>Ce type d\u2019am\u00e9nagement produit des arbres de grande valeur pour l\u2019industrie, en plus d\u2019\u00eatre r\u00e9silient face aux al\u00e9as de la nature. L\u2019enrichissement contribue aussi \u00e0 ramener une certaine biodiversit\u00e9 dans les for\u00eats d\u00e9grad\u00e9es, en plus de contribuer \u00e0 augmenter la valeur \u00e9conomique et esth\u00e9tique des peuplements.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/croissance_chene_rouge_chablis.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-469 size-full\" src=\"http:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/croissance_chene_rouge_chablis.png\" alt=\"\" width=\"200\" height=\"200\" srcset=\"https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/croissance_chene_rouge_chablis.png 200w, https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/croissance_chene_rouge_chablis-150x150.png 150w, https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/croissance_chene_rouge_chablis-50x50.png 50w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/a><br \/>\n<strong>Dispositif de recherche<\/strong><\/p>\n<p>Nous avons entrepris d\u00e8s 1991, \u00e0 Saint-Beno\u00eet-du-Lac en Estrie, une s\u00e9rie d\u2019exp\u00e9riences d\u2019enrichissement afin d\u2019identifier le milieu de reboisement optimal pour diff\u00e9rents feuillus nobles dans le sud du Qu\u00e9bec. Saint-Beno\u00eet-du-Lac est une station de recherche id\u00e9ale puisqu\u2019elle pr\u00e9sente une grande diversit\u00e9 de peuplements d\u00e9grad\u00e9s (feuillus vs. r\u00e9sineux, jeunes vs. vieux, arborescents vs. arbustifs), tous situ\u00e9s sur le m\u00eame terrain (sols et climat identiques) et tr\u00e8s repr\u00e9sentatifs du territoire agroforestier des Cantons-de-l\u2019Est.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Faits saillants<\/strong><\/p>\n<p>Apr\u00e8s plus de 20 ann\u00e9es de suivi, nos r\u00e9sultats ont montr\u00e9 les \u00e9l\u00e9ments suivants\u00a0:<\/p>\n<ul>\n<li><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-261 size-full\" src=\"http:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/chenes_rouges_sous_peupleraie.png\" alt=\"ch\u00eanes rouges sous peupleraie\" width=\"200\" height=\"200\" srcset=\"https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/chenes_rouges_sous_peupleraie.png 200w, https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/chenes_rouges_sous_peupleraie-150x150.png 150w, https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/chenes_rouges_sous_peupleraie-50x50.png 50w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/>Les jeunes peuplements compos\u00e9s de gaulis ou de feuillus arbustifs, comme les aulnaies, sont optimaux pour l\u2019enrichissement avec le ch\u00eane \u00e0 gros fruits qui tol\u00e8re moins bien l\u2019ombre que le ch\u00eane rouge.<\/li>\n<li>Le ch\u00eane rouge pr\u00e9sente une croissance optimale dans les jeunes peuplements forestiers compos\u00e9s d\u2019esp\u00e8ces pionni\u00e8res feuillues (peuplier faux-tremble, bouleau gris et \u00e9rable rouge) et issus de l\u2019abandon de culture.<\/li>\n<li>Les peuplements de feuillus pionniers sont susceptibles au chablis, une perturbation naturelle qui ouvre le couvert forestier et qui favorise la croissance des plants d\u2019arbres rebois\u00e9s en sous-bois.<\/li>\n<li>Les ch\u00eanes plant\u00e9s en sous-bois sont tr\u00e8s\u00a0<img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-448\" src=\"http:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/manchons_chene.png\" alt=\"manchons\" width=\"200\" height=\"200\" srcset=\"https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/manchons_chene.png 200w, https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/manchons_chene-150x150.png 150w, https:\/\/www.frfce.qc.ca\/wp-content\/uploads\/2014\/08\/manchons_chene-50x50.png 50w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/>r\u00e9silients face au chablis en raison deleur capacit\u00e9 \u00e0 faire des rejets de souche suite \u00e0 un bris m\u00e9canique caus\u00e9 par la chute des arbres dominants.<\/li>\n<li>Plus le chablis est s\u00e9v\u00e8re, plus la croissance desch\u00eanes est importante suite \u00e0 la perturbation.<\/li>\n<li>Les chablis cr\u00e9ent des amoncellements de d\u00e9bris ligneux au sol, ce qui restreint les d\u00e9placements du cerf de Virginie et prot\u00e8ge les ch\u00eanes du broutage.<\/li>\n<li>Lorsque le cerf de Virginie est trop abondant, l\u2019utilisation de manchons forestiers est une condition essentielle au succ\u00e8s d\u2019enrichissement.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>Ces r\u00e9sultats sont d\u2019une grande importance puisque les peuplements domin\u00e9s par les esp\u00e8ces pionni\u00e8res feuillues sont tr\u00e8s abondants dans le Qu\u00e9bec m\u00e9ridional. De plus, ces peuplements feuillus sont faciles \u00e0 \u00e9claircir par des coupes partielles, avant ou apr\u00e8s l\u2019enrichissement. Ils sont donc tout indiqu\u00e9s pour pratiquer une foresterie de pr\u00e9cision qui aurait pour objectif de favoriser une croissance optimale et le d\u00e9veloppement d\u2019un tronc droit (qualit\u00e9 sciage) pour des feuillus nobles plant\u00e9s en sous-bois.<br \/>\n<style id=\"bwg-style-0\">    #bwg_container1_0 #bwg_container2_0 .bwg-container-0.bwg-standard-thumbnails {      width: 604px;              justify-content: center;        margin:0 auto !important;              background-color: rgba(255, 255, 255, 0.00);            padding-left: 4px;      padding-top: 4px;      max-width: 100%;            }        #bwg_container1_0 #bwg_container2_0 .bwg-container-0.bwg-standard-thumbnails .bwg-item {    justify-content: flex-start;      max-width: 120px;            width: 120px !important;          }    #bwg_container1_0 #bwg_container2_0 .bwg-container-0.bwg-standard-thumbnails .bwg-item a {       margin-right: 4px;       margin-bottom: 4px;    }    #bwg_container1_0 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( jQuery(\"#bwg_container1_0\").height() ) {             bwg_main_ready(jQuery(\"#bwg_container1_0\"));            }          }        });      }    <\/script>    <\/p>\n<p>&nbsp;<\/p>\n<p><strong>Documentation<\/strong><\/p>\n<p>Un article scientifique a \u00e9t\u00e9 publi\u00e9 en lien avec ce projet\u00a0:<\/p>\n<p>&#8211;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Truax, B., F. Lambert, et D. Gagnon. 2000. Herbicide-free plantations of oaks and ashes along a gradient of open to forested mesic environments. Forest Ecology and Management 137:155-169.\u00a0<a href=\"http:\/\/www.sciencedirect.com\/science\/article\/pii\/S0378112799003242\" target=\"_blank\">www.sciencedirect.com\/science\/article\/pii\/S0378112799003242<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mise en contexte Depuis deux si\u00e8cles, l\u2019exploitation foresti\u00e8re \u00e0 des fins commerciales et la colonisation du territoire ont grandement appauvri les \u00e9cosyst\u00e8mes forestiers du sud du Qu\u00e9bec. Pr\u00e9sentement, les donn\u00e9es d\u2019inventaire indiquent que le territoire estrien compte plus de 100 000 hectares de for\u00eats d\u00e9grad\u00e9es. Ces for\u00eats pourraient \u00eatre restaur\u00e9es et enrichies, en bonne partie, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":20,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-260","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.frfce.qc.ca\/index.php?rest_route=\/wp\/v2\/pages\/260","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.frfce.qc.ca\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.frfce.qc.ca\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.frfce.qc.ca\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.frfce.qc.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=260"}],"version-history":[{"count":11,"href":"https:\/\/www.frfce.qc.ca\/index.php?rest_route=\/wp\/v2\/pages\/260\/revisions"}],"predecessor-version":[{"id":470,"href":"https:\/\/www.frfce.qc.ca\/index.php?rest_route=\/wp\/v2\/pages\/260\/revisions\/470"}],"up":[{"embeddable":true,"href":"https:\/\/www.frfce.qc.ca\/index.php?rest_route=\/wp\/v2\/pages\/20"}],"wp:attachment":[{"href":"https:\/\/www.frfce.qc.ca\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}