{"id":59368,"date":"2015-10-28T23:02:01","date_gmt":"2015-10-28T21:02:01","guid":{"rendered":"http:\/\/staging.sillon38.com\/?p=59368"},"modified":"2015-10-28T23:02:01","modified_gmt":"2015-10-28T21:02:01","slug":"arbres-et-rechauffement-climatique","status":"publish","type":"post","link":"https:\/\/www.sillon38.com\/blog\/2015\/10\/28\/arbres-et-rechauffement-climatique\/","title":{"rendered":"Arbres et r\u00e9chauffement climatique.."},"content":{"rendered":"<div>\n<div>\n<div><span style=\"color: #000080;\">La for\u00eat se trouve au c\u0153ur des  pr\u00e9occupations climatiques dans une ann\u00e9e marqu\u00e9e par\u00a0 la COP 21  qui se d\u00e9roulera \u00e0 Paris du 30 novembre au 11 d\u00e9cembre prochain.<\/span><\/div>\n<\/div>\n<\/div>\n<p><span style=\"color: #000080;\"> <\/span><\/p>\n<p><span style=\"color: #000080;\"><strong>Les effets visibles du r\u00e9chauffement climatique sur nos for\u00eats<\/strong><\/span><\/p>\n<p><span style=\"color: #000080;\"> <\/span><\/p>\n<p><span style=\"color: #000080;\">En France, le changement  climatique est visible. Les temp\u00e9ratures ont augment\u00e9 de 0,9C\u00b0 en un  si\u00e8cle, ce qui a naturellement des cons\u00e9quences sur nos for\u00eats.  L\u2019augmentation des temp\u00e9ratures provoque un allongement de la p\u00e9riode de  v\u00e9g\u00e9tation. <\/span><\/p>\n<p><span style=\"color: #000080;\">Ainsi, les arbres grandissent aussi bien en diam\u00e8tre qu\u2019en  hauteur et ceci particuli\u00e8rement dans les for\u00eats de montagne. On  constate par exemple une augmentation de croissance de l\u2019\u00e9pic\u00e9a dans les  Alpes du Nord et en Auvergne, ainsi que celle du sapin blanc des  Vosges. <\/span><\/p>\n<p><span style=\"color: #000080;\">Cependant, le changement climatique ne pr\u00e9sente pas que des  avantages. Les arbres se retrouvent \u00e9galement confront\u00e9s \u00e0 des attaques  parasitaires, \u00e0 des risques d&rsquo;incendie et \u00e0 des risques de temp\u00eates  toujours plus nombreux avec l\u2019accroissement des temp\u00e9ratures. <\/span><\/p>\n<p><span style=\"color: #000080;\"><strong>Une gestion durable pour att\u00e9nuer les effets du r\u00e9chauffement climatique<\/strong><\/span><\/p>\n<p><span style=\"color: #000080;\"> <\/span><\/p>\n<p><span style=\"color: #000080;\">Toutefois, les arbres ne  subissent pas uniquement les cons\u00e9quences du r\u00e9chauffement climatique,  ils permettent aussi d&rsquo;en att\u00e9nuer les effets, gr\u00e2ce aux r\u00f4les qu&rsquo;ils  jouent \u00e0 diff\u00e9rents niveaux. En effet, les arbres ont la capacit\u00e9 de  capter le CO2 atmosph\u00e9rique. <\/span><\/p>\n<p><span style=\"color: #000080;\">Les for\u00eats constituent donc un formidable  puits de carbone\u00a0: un m\u00e8tre cube de bois stocke une tonne de CO2. Le  carbone est ainsi stock\u00e9 en for\u00eat dans les arbres et dans les sols  forestiers. Le bois est \u00e9galement stock\u00e9 pendant de nombreuses ann\u00e9es  dans diff\u00e9rents mat\u00e9riaux (maison en bois, meubles et objets divers en  bois,\u2026). Lorsque l&rsquo;on utilise le bois dans la construction, \u00e0 la place  de l&rsquo;aluminium ou de l&rsquo;acier par exemple, on \u00e9conomise des \u00e9nergies  fossiles qui servent \u00e0 les fabriquer. Cela diminue en cons\u00e9quence les  \u00e9missions de gaz \u00e0 effet de serre dans l&rsquo;atmosph\u00e8re. <\/span><\/p>\n<p><span style=\"color: #000080;\">Enfin, le bois  pr\u00e9sente une autre qualit\u00e9 dans la mesure o\u00f9 celui-ci contribue  \u00e9galement au d\u00e9veloppement des \u00e9nergies vertes en tant que combustible.  La loi sur la transition \u00e9nerg\u00e9tique et la croissance verte,\u00a0  adopt\u00e9e le 18 ao\u00fbt 2015, pr\u00e9voit d&rsquo;augmenter la part des \u00e9nergies  renouvelables dans le mod\u00e8le \u00e9nerg\u00e9tique fran\u00e7ais d\u2019ici 2030. Une des  solutions pour y parvenir est de mobiliser de la biomasse,  essentiellement issue des \u00e9cosyst\u00e8mes forestiers. <\/span><\/p>\n<p><span style=\"color: #000080;\">Il est donc important  de mobiliser davantage de bois, et principalement du bois d&rsquo;\u0153uvre, tout  en s\u2019inscrivant dans la gestion durable des for\u00eats.<\/span><\/p>\n<p><span style=\"color: #000080;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-59369\" title=\"Sans titre\" src=\"http:\/\/staging.sillon38.com\/wp-content\/uploads\/2015\/10\/Sans-titre5.png\" alt=\"Sans titre\" width=\"556\" height=\"617\" srcset=\"https:\/\/www.sillon38.com\/blog\/wp-content\/uploads\/2015\/10\/Sans-titre5.png 556w, https:\/\/www.sillon38.com\/blog\/wp-content\/uploads\/2015\/10\/Sans-titre5-270x300.png 270w\" sizes=\"auto, (max-width: 556px) 100vw, 556px\" \/><br \/>\n<\/span><\/p>\n<div class=\"photo-wrap photo--image\" style=\"background-image: url(http:\/\/40.media.tumblr.com\/d25ebd36ae52f024abe3e354a0f1e344\/tumblr_ngomwf39981tzjp91o1_1280.png);\"><a href=\"http:\/\/minagri-infographies.tumblr.com\/image\/105358139772\"> <\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>que se trame t-il dans nos for\u00eats ?<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,28],"tags":[491,2507],"class_list":["post-59368","post","type-post","status-publish","format-standard","hentry","category-a-la-une","category-foret","tag-arbres-et-rechauffement-climatique","tag-foret"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Arbres et r\u00e9chauffement climatique.. -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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