{"id":30660,"date":"2019-07-20T15:21:32","date_gmt":"2019-07-20T13:21:32","guid":{"rendered":"https:\/\/www.naturalscience.org\/?p=30660"},"modified":"2021-11-09T15:08:49","modified_gmt":"2021-11-09T14:08:49","slug":"planter-un-billion-darbres-aidera-a-resoudre-les-changements-climatiques","status":"publish","type":"post","link":"https:\/\/www.naturalscience.org\/fr\/news\/2019\/07\/planter-un-billion-darbres-aidera-a-resoudre-les-changements-climatiques\/","title":{"rendered":"Planter un billion d\u2019arbres aidera \u00e0 r\u00e9soudre les changements climatiques"},"content":{"rendered":"

Les arbres sont incroyables! Ils nous fournissent de l\u2019air pour respirer et absorbent le dioxyde de carbone en retour. Une nouvelle \u00e9tude de l\u2019EPF Zurich montre que s\u2019il y a un billion d\u2019arbres plant\u00e9s dans le monde sur des terres qui sont d\u00e9j\u00e0 disponibles pour cela, alors la soi-disant crise climatique mondiale pourrait \u00eatre \u00e9vit\u00e9e. Planter des arbres est moins cher et beaucoup plus efficace que toute autre solution pour r\u00e9soudre certains de nos probl\u00e8mes climatiques caus\u00e9s par l\u2019homme. Aucun d\u00e9veloppement technologique n\u2019est n\u00e9cessaire. Les arbres nous aident naturellement et gratuitement !<\/p>\n

Il est d\u00e9sormais reconnu dans la science courante que la plantation d\u2019arbres et surtout le reboisement \u00e0 grande \u00e9chelle peuvent avoir des effets b\u00e9n\u00e9fiques massifs sur l\u2019environnement. L\u2019ampleur du reboisement requis va d\u2019une superficie de la taille des \u00c9tats-Unis \u00e0 celle des \u00c9tats-Unis et de la Chine r\u00e9unis. Bien que cela semble astronomique, il y a, comme l\u2019ont montr\u00e9 les chercheurs de l\u2019EPF Zurich, suffisamment de terres disponibles sur la plan\u00e8te qui ne sont pas urbaines, qui ne sont pas des terres agricoles, mais qui sont maintenant disponibles pour la plantation d\u2019arbres. De vastes zones aux \u00c9tats-Unis, en Russie, en Chine, en Australie et dans d\u2019autres pays sont pr\u00eates \u00e0 \u00eatre rebois\u00e9es. On estime que le reboisement \u00e0 cette \u00e9chelle pourrait r\u00e9duire le dioxyde de carbone dans l\u2019atmosph\u00e8re de 25 \u00e0 75 %. Nous verrons aussi une forte augmentation d\u2019oxyg\u00e8ne en retour.<\/p>\n

Les arbres font cela et bien plus encore ! Le reboisement r\u00e9tablira une vie plus harmonieuse \u00e0 travers le monde. L\u00e0 o\u00f9 il y a des arbres, il y a de l\u2019eau; ces zones seront plus r\u00e9guli\u00e8rement irrigu\u00e9es et les crues subites seront r\u00e9duites parce que les arbres retiennent les sols, ce qui permet une absorption beaucoup plus grande de l\u2019eau. Les nappes phr\u00e9atiques s\u2019\u00e9l\u00e8veront et il y aura une plus grande biodiversit\u00e9. Nous verrons plus d\u2019oiseaux et d\u2019insectes parce qu\u2019ils auront de nouveau un habitat, des \u00e9cureuils et de nombreux autres animaux prosp\u00e9reront et une myriade de plantes, de champignons et de bact\u00e9ries du sol reprendront vie. Un arbre, c\u2019est comme un village ; une for\u00eat, comme une cit\u00e9 pleine de vie !<\/p>\n

Partout dans le monde, des projets de plantation d\u2019arbres \u00e0 grande \u00e9chelle sont d\u00e9j\u00e0 en cours. Du \u00ab tsunami de 10 milliards d\u2019arbres \u00bb du Pakistan \u00e0 la \u00ab Grande muraille verte \u00bb au travers de l\u2019Afrique, les pays prennent des mesures incroyables pour restaurer l\u2019environnement naturel. Tout le monde peut faire une diff\u00e9rence. Plantez un arbre !<\/p>\n

Sources<\/p>\n

Planter un billion d\u2019arbres dans les actualit\u00e9s (en anglais) :
\nhttps:\/\/www.theguardian.com\/environment\/2019\/jul\/04\/planting-billions-trees-best-tackle-climate-crisis-scientists-canopy-emissions<\/a><\/p>\n

https:\/\/www.bbc.co.uk\/news\/science-environment-48870920<\/a><\/p>\n

EPF Zurich (en anglais) :
\n\u201cThe global tree restoration potential\u201d, Science 05 Jul 2019: Vol. 365, Issue 6448, pp. 76-79
\nhttps:\/\/science.sciencemag.org\/content\/365\/6448\/76.full<\/a><\/p>\n

Communiqu\u00e9 de presse de l\u2019EPF (en anglais) :
\nhttps:\/\/ethz.ch\/en\/news-and-events\/eth-news\/news\/2019\/07\/how-trees-could-save-the-climate.html<\/a><\/p>\n

Reforestation et changement climatique (en anglais) :
\n\u201cRestoring forests as a means to many ends\u201d, Science 05 Jul 2019: Vol. 365, Issue 6448, pp. 24-25
\nhttps:\/\/science.sciencemag.org\/content\/365\/6448\/24<\/a><\/p>\n

Plantations d\u2019arbres dans le monde (en anglais) :
\nhttps:\/\/www.bbc.co.uk\/news\/newsbeat-48884165<\/a><\/p>\n

The World Foundation for Natural Science:
\nhttps:\/\/www.naturalscience.org\/topics\/natural-agriculture\/forests\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Les arbres sont incroyables! Ils nous fournissent de l\u2019air pour respirer et absorbent le dioxyde de carbone en retour. Une nouvelle \u00e9tude de l\u2019EPF Zurich montre que s\u2019il y a un billion d\u2019arbres plant\u00e9s dans le monde sur des terres qui sont d\u00e9j\u00e0 disponibles pour cela, alors la soi-disant crise climatique mondiale pourrait \u00eatre \u00e9vit\u00e9e. 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