{"id":12350799,"date":"2024-04-07T11:59:01","date_gmt":"2024-04-07T10:59:01","guid":{"rendered":"https:\/\/kapitalis.com\/tunisie\/?p=12350799"},"modified":"2024-04-07T11:59:02","modified_gmt":"2024-04-07T10:59:02","slug":"dr-gafrej-cessons-de-construire-les-barrages-et-preservons-le-cycle-naturel-de-leau","status":"publish","type":"post","link":"https:\/\/kapitalis.com\/tunisie\/2024\/04\/07\/dr-gafrej-cessons-de-construire-les-barrages-et-preservons-le-cycle-naturel-de-leau\/","title":{"rendered":"Dr Gafrej\u00a0: \u00abCessons de construire les barrages et pr\u00e9servons le cycle naturel de l\u2019eau\u00bb"},"content":{"rendered":"\n<p><strong><em>\u00abSi cela ne tenait qu\u2019\u00e0 moi, j\u2019arr\u00eaterais de construire des barrages et je laisserais l\u2019eau reprendre son cycle naturel\u00bb, a d\u00e9clar\u00e9 le Dr Raoudha Gafrej, expert international et consultant en gestion int\u00e9gr\u00e9e des ressources en eau et en adaptation au changement climatique.<\/em><\/strong><\/p>\n\n\n\n<!--more-->\n\n\n\n<p><em>\u00abLe stockage des eaux de surface ne doit pas se faire au d\u00e9triment de la recharge de la nappe phr\u00e9atique, et l\u2019homme ne doit pas priver les autres esp\u00e8ces v\u00e9g\u00e9tales et animales de leur droit \u00e0 l\u2019eau douce\u00bb,<\/em> a-t-elle expliqu\u00e9.<\/p>\n\n\n\n<p>Dans un entretien \u00e0 l\u2019agence Tap, Gafrej a pr\u00f4n\u00e9 le respect du cycle naturel de l\u2019eau\u00a0: ne pas retenir l\u2019eau de pluie ne signifie pas perdre de l\u2019eau; au contraire, cela favorise la recharge des aquif\u00e8res, r\u00e9tablissant ainsi le cycle de l\u2019eau et renouvelant les r\u00e9serves en eaux souterraines, a-t-elle expliqu\u00e9. <em>\u00abCela permet de r\u00e9duire les inondations, de lutter contre l\u2019\u00e9rosion et, bien s\u00fbr, de fournir davantage d\u2019eau pendant les p\u00e9riodes chaudes en rechargeant la <a href=\"https:\/\/kapitalis.com\/tunisie\/2023\/07\/20\/la-secheresse-augmente-lexploitation-des-nappes-profondes-en-tunisie\/\" target=\"_blank\" rel=\"noreferrer noopener\">nappe phr\u00e9atique <\/a>lors des p\u00e9riodes de fortes pr\u00e9cipitations\u00bb<\/em>, a-t-elle ajout\u00e9.<\/p>\n\n\n\n<p>Nous devrions nous pr\u00e9occuper davantage de l\u2019\u00e9tat des eaux souterraines, qui, en raison de la surexploitation, vont avoir du mal \u00e0 se reconstituer, voire ne se reconstitueront plus. Les eaux de surface sont fournies naturellement, en quantit\u00e9s stables sur Terre, gr\u00e2ce \u00e0 un cycle naturel parfait. La Terre a re\u00e7u la m\u00eame quantit\u00e9 d\u2019eau depuis sa cr\u00e9ation. Ce qui a chang\u00e9 avec le changement climatique, c\u2019est la r\u00e9partition de cette eau entre les continents, a poursuivi Gafrej.<\/p>\n\n\n\n<p>Il faut laisser les eaux de ruissellement reprendre leur cours pour reconstituer la nappe phr\u00e9atique, qui constitue le plus grand r\u00e9servoir d\u2019eau douce sur Terre, car une baisse de son niveau pourrait mettre en danger la s\u00e9curit\u00e9 alimentaire, les approvisionnements de base en eau et la r\u00e9silience au changement climatique, a-t-elle soulign\u00e9, condamnant le forage incontr\u00f4l\u00e9 de puits profonds, dont le nombre atteint 30 000 en Tunisie.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-kapitalis wp-block-embed-kapitalis\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"rUa4Vr9lz8\"><a href=\"https:\/\/kapitalis.com\/tunisie\/2023\/07\/20\/la-secheresse-augmente-lexploitation-des-nappes-profondes-en-tunisie\/\">La s\u00e9cheresse augmente l\u2019exploitation des nappes profondes en Tunisie\u00a0<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"\u00ab\u00a0La s\u00e9cheresse augmente l\u2019exploitation des nappes profondes en Tunisie\u00a0\u00a0\u00bb &#8212; Kapitalis\" src=\"https:\/\/kapitalis.com\/tunisie\/2023\/07\/20\/la-secheresse-augmente-lexploitation-des-nappes-profondes-en-tunisie\/embed\/#?secret=m9BLGusZCw#?secret=rUa4Vr9lz8\" data-secret=\"rUa4Vr9lz8\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Ecosyst\u00e8mes marins et s\u00e9curit\u00e9 alimentaire<\/h2>\n\n\n\n<p>Sur la question du changement climatique, Gafrej a soulign\u00e9 l\u2019importance des eaux de ruissellement pour les \u00e9cosyst\u00e8mes marins, la photosynth\u00e8se et la s\u00e9curit\u00e9 alimentaire.<\/p>\n\n\n\n<p>Sur un autre plan, permettre au ruissellement de se frayer un chemin vers les oc\u00e9ans ne peut \u00eatre que b\u00e9n\u00e9fique pour l\u2019homme et la biodiversit\u00e9, a-t-elle expliqu\u00e9.<\/p>\n\n\n\n<p><em>\u00abCette eau est vitale car elle transporte les sels min\u00e9raux n\u00e9cessaires au phytoplancton, l\u2019algue microscopique responsable de la photosynth\u00e8se dans l\u2019oc\u00e9an, produite par la v\u00e9g\u00e9tation terrestre. <\/em><em>Ces organismes marins sont \u00e0 la base de la cha\u00eene alimentaire des poissons, des mammif\u00e8res marins et des coquillages. Ils produisent \u00e9galement une grande quantit\u00e9 d\u2019oxyg\u00e8ne, qui se dissout dans l\u2019eau puis se retrouve dans l\u2019air que nous respirons gr\u00e2ce aux \u00e9changes gazeux entre l\u2019oc\u00e9an et l\u2019atmosph\u00e8re\u00bb<\/em>, affirme encore Gafrej. Et d\u2019expliquer&nbsp;: <em>\u00abPr\u00e8s de 50% de l\u2019oxyg\u00e8ne que nous respirons est produit par le phytoplancton, qui absorbe \u00e9galement environ 25% du CO2 atmosph\u00e9rique et anthropique (d\u00fb \u00e0 l\u2019activit\u00e9 humaine)\u00bb<\/em>, tout en soulignant l\u2019importance de ces organismes pour la vie sur Terre et leur d\u00e9pendance vis-\u00e0-vis de l\u2019activit\u00e9 l\u2019eau qui circule autour de la plan\u00e8te.<\/p>\n\n\n\n<p>Selon les scientifiques, le phytoplancton marin fixe autant de CO2 de l\u2019atmosph\u00e8re que toutes les plantes terrestres et est donc essentiel pour r\u00e9duire l\u2019effet de serre et la hausse des temp\u00e9ratures provoqu\u00e9s par l&rsquo;activit\u00e9 humaine.<\/p>\n\n\n\n<p><strong><em>D\u2019apr\u00e8s Tap<\/em><\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-kapitalis wp-block-embed-kapitalis\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"hx4bcJIG0w\"><a href=\"https:\/\/kapitalis.com\/tunisie\/2023\/05\/05\/la-crise-de-leau-en-tunisie-selon-raoudha-gafrej\/\">La crise de l\u2019eau en Tunisie, selon Raoudha Gafrej<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"\u00ab\u00a0La crise de l\u2019eau en Tunisie, selon Raoudha Gafrej\u00a0\u00bb &#8212; Kapitalis\" src=\"https:\/\/kapitalis.com\/tunisie\/2023\/05\/05\/la-crise-de-leau-en-tunisie-selon-raoudha-gafrej\/embed\/#?secret=128FcUh5Wd#?secret=hx4bcJIG0w\" data-secret=\"hx4bcJIG0w\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Dr Raoudha Gafrej appelle a\u00e0 arr\u00eater de construire des barrages et \u00e0 laisser l&rsquo;eau reprendre son cycle naturel. <\/p>\n","protected":false},"author":8,"featured_media":12351173,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[995,2433],"tags":[16020,24073,114848,114847,114849,84711,108003,114850,20261,62643],"class_list":["post-12350799","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-economie","category-tunisie","tag-barrages","tag-changement-climatique","tag-cycle-naturel","tag-dr-raoudha-gafrej","tag-eau-de-surface","tag-erosion","tag-nappe-phreatique","tag-photosynthese","tag-securite-alimentaire","tag-tunisie"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - 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