{"id":4056,"date":"2007-06-02T17:27:40","date_gmt":"2007-06-02T17:27:40","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/06\/02\/marcage-une-for\/"},"modified":"2012-07-12T09:57:20","modified_gmt":"2012-07-12T09:57:20","slug":"marcage-une-for","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/06\/02\/marcage-une-for\/","title":{"rendered":"Mar\u00e9cage : une forme d&rsquo;utilisation du sol."},"content":{"rendered":"<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/marcage1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"250\" height=\"172\"  alt=\"Marcage\" src=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/marcage.jpg\" style=\"margin: 0px 5px 5px 0px;float: left\" \/><\/a>Un internaute objectait vis-\u00e0-vis de la hyacinthe d&rsquo;eau qu&rsquo;elle \u00e9tait terriblement productrice de gaz \u00e0 effet de serre : de m\u00e9thane. D\u00e9faut ou qualit\u00e9 ? Le mar\u00e9cage est une forme d&rsquo;utilisation du sol. En d\u00e9clin en France depuis 2000 ans. Jusqu&rsquo;\u00e0 40 % du sol \u00e9tait constitu\u00e9 de <a href=\"http:\/\/www.chinafrique.com\/zf-2005\/2005-01\/2005.01-SOC-3.htm\">mar\u00e9cages<\/a>. A l&rsquo;heure actuelle, on s&rsquo;aper\u00e7oit que malgr\u00e9 les &quot;d\u00e9fauts&quot;, cette forme d&rsquo;utilisation de la surface avait ses qualit\u00e9s. Celle d&rsquo;un r\u00e9gulateur. Et si les maladies \u00e9taient apport\u00e9es par l&rsquo;eau stagnante et les moustiques, c&rsquo;\u00e9tait aussi une ressource \u00e9conomique consid\u00e9rable et continue. Des g\u00e9n\u00e9rations y ont puis\u00e9es leur vie. Non ce n&rsquo;\u00e9tait pas une forme r\u00e9pulsive. Comme les marais du sud irakien \u00e9taient au contraire une forme \u00e9conomique d&rsquo;aisance et de richesse, m\u00eame au prix d&rsquo;inconv\u00e9nients. <\/p>\n<p>Les r\u00e9centes s\u00e9cheresses en France, ont souvent conduits les agriculteurs \u00e0 cr\u00e9er des retenues collinaires. On refait ce qu&rsquo;on avait d\u00e9fait. Partout dans la campagne, ces &quot;nouvelles constructions&quot; voient le jour. Bient\u00f4t donc, on exploitera de nouvelles plantes, enfin pas tellement nouvelles, mais oubli\u00e9es, consid\u00e9r\u00e9es comme nuisance. Grand-m\u00eares, femmes, filles qui allaient chercher des joncs. Comme on peut le deviner, il faudra r\u00e9inventer l&rsquo;agriculture. 50 000 km2, c&rsquo;est 5 000 000 d&rsquo;hectares, cela peut donner 1 000 000 000 tonnes de biomasse (jussie ou hyacinthe d&rsquo;eau)&#8230; Le d\u00e9faut des marais, le <a href=\"http:\/\/fr.wikipedia.org\/wiki\/M\u00c3\u00a9thane\">m\u00e9thane<\/a>, peut \u00eatre vu comme un avantage. Mais on a \u00e9t\u00e9 d\u00e9form\u00e9 par le p\u00e9trole. 20 000 travailleurs suffisait au V\u00e9n\u00e9zuela pour exploiter son p\u00e9trole. Cette exploitation sera tr\u00e9s gourmande en main d&rsquo;oeuvre&#8230; Et on a vu avec l&rsquo;Irak que le &quot;peuple des marais&quot; \u00e9tait loin d&rsquo;\u00eatre malheureux. Le marais peut et doit \u00eatre g\u00e9r\u00e9, dans l&rsquo;int\u00e9r\u00eat de la collectivit\u00e9, comme une <a href=\"http:\/\/www.forum-marais-atl.com\/iso_album\/bilan-forum-marais-2000\">sylviculture<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Un internaute objectait vis-\u00e0-vis de la hyacinthe d&rsquo;eau qu&rsquo;elle \u00e9tait terriblement productrice de gaz \u00e0 effet de serre : de m\u00e9thane. D\u00e9faut ou qualit\u00e9 ? Le mar\u00e9cage est une forme d&rsquo;utilisation du sol. En d\u00e9clin en France depuis 2000 ans. Jusqu&rsquo;\u00e0 40 % du sol \u00e9tait constitu\u00e9 de mar\u00e9cages. A l&rsquo;heure actuelle, on s&rsquo;aper\u00e7oit que [&hellip;]<\/p>\n","protected":false},"author":198,"featured_media":5655,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,6],"tags":[1772],"class_list":["post-4056","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-rechauffement-climatique","tag-sylviculture-marecages-methane"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Mar\u00e9cage : une forme d&#039;utilisation du sol. - leblogenergie.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/06\/02\/marcage-une-for\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Mar\u00e9cage : une forme d&#039;utilisation du sol. - leblogenergie.com\" \/>\n<meta name=\"twitter:description\" content=\"Un internaute objectait vis-\u00e0-vis de la hyacinthe d&rsquo;eau qu&rsquo;elle \u00e9tait terriblement productrice de gaz \u00e0 effet de serre : de m\u00e9thane. D\u00e9faut ou qualit\u00e9 ? Le mar\u00e9cage est une forme d&rsquo;utilisation du sol. En d\u00e9clin en France depuis 2000 ans. Jusqu&rsquo;\u00e0 40 % du sol \u00e9tait constitu\u00e9 de mar\u00e9cages. 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