{"id":476,"date":"2018-05-16T09:00:00","date_gmt":"2018-05-16T07:00:00","guid":{"rendered":"http:\/\/vandiepenbeeck.org\/?p=476"},"modified":"2019-11-21T15:36:18","modified_gmt":"2019-11-21T14:36:18","slug":"les-facteurs-qui-influencent-le-climat-partie-38","status":"publish","type":"post","link":"http:\/\/vandiepenbeeck.org\/?p=476","title":{"rendered":"Les facteurs qui influencent le climat &#8211; partie 38"},"content":{"rendered":"<p><span style=\"font-size: 14pt; font-family: 'Calibri', sans-serif;\">Le r\u00e9gime des pr\u00e9cipitations (3)<\/span><\/p>\n<p><!--more--><\/p>\n<p>Dans certaines r\u00e9gions les pluies sont tr\u00e8s faibles et peu fr\u00e9quentes. Comme cons\u00e9quence \u00e0 la circulation g\u00e9n\u00e9rale, il y a des zones de hautes pressions quasi permanentes notamment dans les zones limites des tropiques. La figure 55 montre le r\u00e9gime moyen de la r\u00e9gion d\u2019Eilat (29\u00b0 33\u2019 N, 34\u00b0 55\u2019 E).<\/p>\n<p style=\"text-align: left;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-551\" src=\"https:\/\/vandiepenbeeck.org\/wp-content\/uploads\/2018\/05\/eilat-300x199.png\" alt=\"\" width=\"300\" height=\"199\" srcset=\"http:\/\/vandiepenbeeck.org\/wp-content\/uploads\/2018\/05\/eilat-300x199.png 300w, http:\/\/vandiepenbeeck.org\/wp-content\/uploads\/2018\/05\/eilat-768x510.png 768w, http:\/\/vandiepenbeeck.org\/wp-content\/uploads\/2018\/05\/eilat.png 960w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Figure 55 : r\u00e9gime moyen des pr\u00e9cipitations \u00e0 Eilat (Isra\u00ebl)<\/p>\n<p>Pourtant dans ces r\u00e9gimes arides, une certaine v\u00e9g\u00e9tation s\u2019est acclimat\u00e9e aux pluies faibles et peu fr\u00e9quentes. Elles vont d\u00e9velopper diff\u00e9rents moyens pour capter l\u2019eau. Elles peuvent d\u00e9velopper des racines qui s\u2019enfoncent profond\u00e9ment dans le sol pour atteindre les nappes phr\u00e9atiques ; elles vont d\u00e9velopper un r\u00e9seau de racines de surface pour capter le maximum d\u2019eau lors des pluies ; elles vont r\u00e9duire l\u2019\u00e9vapotranspiration (perte d\u2019eau par transpiration) par des feuilles \u00e0 faible surface ou protection des stomates (orifices sur les feuilles permettant les \u00e9changes gazeux) ; elles vont accumuler l\u2019eau dans des vacuoles sorte de r\u00e9servoir dans le corps de la plante ; d\u00e9veloppement d\u2019une photosynth\u00e8se particuli\u00e8re permettant aux stomates de s\u2019ouvrir pendant le nuits fraiches. Certaines plantes peuvent utiliser plusieurs de ces m\u00e9thodes de captation de l\u2019eau.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le r\u00e9gime des pr\u00e9cipitations (3)<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-476","post","type-post","status-publish","format-standard","hentry","category-article-traitant-du-climat"],"_links":{"self":[{"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=\/wp\/v2\/posts\/476"}],"collection":[{"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=476"}],"version-history":[{"count":1,"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=\/wp\/v2\/posts\/476\/revisions"}],"predecessor-version":[{"id":552,"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=\/wp\/v2\/posts\/476\/revisions\/552"}],"wp:attachment":[{"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=476"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/vandiepenbeeck.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}