{"id":7457,"date":"2018-02-26T22:44:31","date_gmt":"2018-02-26T21:44:31","guid":{"rendered":"https:\/\/www.yannarthusbertrandphoto.com\/?post_type=product&#038;p=7457"},"modified":"2020-09-09T11:48:41","modified_gmt":"2020-09-09T09:48:41","slug":"caravane","status":"publish","type":"product","link":"https:\/\/www.yannarthusbertrandphoto.com\/fr\/produit\/caravane\/","title":{"rendered":"Caravane"},"content":{"rendered":"<p>Le Sahara, le plus grand d\u00e9sert de sable du monde, couvre 9 millions de km2 (l\u2019\u00e9quivalent des \u00c9tats-Unis) r\u00e9partis sur onze pays. Sur sa bordure occidentale, la Mauritanie, aux trois quarts d\u00e9sertique, est particuli\u00e8rement touch\u00e9e par la d\u00e9sertification d\u2019origine anthropique. Le surp\u00e2turage et la r\u00e9colte de bois de feu suppriment peu \u00e0 peu la v\u00e9g\u00e9tation fixatrice des grands massifs dunaires, facilitant la progression du sable qui menace des villes comme Nouakchott.<\/p>\n<p>La capitale \u00e9rig\u00e9e sur une plaine herbeuse en 1960, \u00e0 plusieurs jours de marche du Sahara, trouve aujourd\u2019hui le d\u00e9sert \u00e0 sa porte. Les zones arides et semi-arides couvrent les deux tiers du continent africain, et leurs terres fragiles se d\u00e9t\u00e9riorent rapidement. Au cours du dernier demi-si\u00e8cle, 65 % des terres arables et 31 % des p\u00e2turages permanents d\u2019Afrique subsaharienne ont ainsi \u00e9t\u00e9 d\u00e9grad\u00e9s.<\/p>\n<p>Cela entra\u00eene une baisse des rendements, qui se r\u00e9percute sur la s\u00e9curit\u00e9 alimentaire. Dans ce cercle vicieux difficile \u00e0 rompre, la pauvret\u00e9 est \u00e0 la fois cause et cons\u00e9quence de la d\u00e9gradation des terres cultivables et de la baisse de leur productivit\u00e9 agricole.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Caravane de dromadaires dans les dunes pr\u00e8s de Nouakchott, Mauritanie (18\u00b009\u2019 N \u2013 15\u00b029\u2019 O).<\/p>\n","protected":false},"featured_media":7458,"template":"","meta":{"inline_featured_image":false},"product_cat":[212],"product_tag":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.10 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Caravane - Yann Arthus-Bertrand Photographie<\/title>\n<meta name=\"description\" content=\"Le Sahara, le plus grand d\u00e9sert de sable du monde, couvre 9 millions de km2 (l\u2019\u00e9quivalent des \u00c9tats-Unis) r\u00e9partis sur onze pays. Sur sa bordure occidentale, la Mauritanie, aux trois quarts d\u00e9sertique, est particuli\u00e8rement touch\u00e9e par la d\u00e9sertification d\u2019origine anthropique...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.yannarthusbertrandphoto.com\/fr\/produit\/caravane\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Caravane - Yann Arthus-Bertrand Photographie\" \/>\n<meta property=\"og:description\" content=\"Le Sahara, le plus grand d\u00e9sert de sable du monde, couvre 9 millions de km2 (l\u2019\u00e9quivalent des \u00c9tats-Unis) r\u00e9partis sur onze pays. 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