{"id":744,"date":"2019-11-20T09:03:18","date_gmt":"2019-11-20T09:03:18","guid":{"rendered":"https:\/\/bodenreise.ch\/?p=744"},"modified":"2019-11-20T11:32:07","modified_gmt":"2019-11-20T11:32:07","slug":"bodenfunktionen-gesunder-boden-weniger-hochwasser","status":"publish","type":"post","link":"https:\/\/bodenreise.ch\/fr\/bodenfunktionen-gesunder-boden-weniger-hochwasser\/","title":{"rendered":"Les fonctions du sol: un sol sain, c\u2019est moins d\u2019inondations"},"content":{"rendered":"<p><strong>Notre sol absorbe une grande partie des pr\u00e9cipitations par infiltration, emp\u00eachant ainsi l\u2019\u00e9l\u00e9vation du niveau de nos lacs et rivi\u00e8res et, au final, la survenue d\u2019inondations.<\/strong><\/p>\n<p><!--more--><\/p>\n<p><strong>Comment se produisent les inondations?<br \/>\n<\/strong>Lors des pr\u00e9cipitations, une partie de l\u2019eau s\u2019infiltre dans le sol, y est stock\u00e9e et y forme la nappe phr\u00e9atique. Si le sol est satur\u00e9, il ne peut plus absorber l\u2019eau \u2013 les pr\u00e9cipitations sont donc absorb\u00e9es par les cours d\u2019eau et les lacs, qui voient ainsi leur niveau monter.<\/p>\n<p><strong>Infiltration de l\u2019eau<br \/>\n<\/strong>La quantit\u00e9 d\u2019eau que le sol peut absorber d\u00e9pend de sa structure (porosit\u00e9).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-759 size-large\" src=\"\/wp-content\/uploads\/2019\/11\/Bodenreise_Grafik_FR-1024x426.jpg\" alt=\"\" width=\"640\" height=\"266\" srcset=\"https:\/\/bodenreise.ch\/wp-content\/uploads\/2019\/11\/Bodenreise_Grafik_FR-1024x426.jpg 1024w, https:\/\/bodenreise.ch\/wp-content\/uploads\/2019\/11\/Bodenreise_Grafik_FR-500x208.jpg 500w, https:\/\/bodenreise.ch\/wp-content\/uploads\/2019\/11\/Bodenreise_Grafik_FR-768x320.jpg 768w, https:\/\/bodenreise.ch\/wp-content\/uploads\/2019\/11\/Bodenreise_Grafik_FR.jpg 1520w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<p>Les interstices du sol, les pores, se remplissent lors de l\u2019infiltration.<br \/>\nLes \u00e9l\u00e9ments d\u00e9terminants sont les pores moyens (diam\u00e8tres de plus d\u2019un dixi\u00e8me de millim\u00e8tre), qui absorbent l\u2019eau. Si les pr\u00e9cipitations se poursuivent, les interstices plus grands, comme les tunnels de vers de terre, se remplissent \u00e9galement.<\/p>\n<p><strong>\u00c9viter les inondations<br \/>\n<\/strong>Un sol intact, qui peut absorber suffisamment d\u2019eau, constitue un facteur important pour la pr\u00e9vention des inondations.<br \/>\nCela englobe une gestion judicieuse du terrain \u00e0 b\u00e2tir et de l\u2019<strong>imperm\u00e9abilisation<\/strong> durable des sols (am\u00e9nagement du territoire) ainsi que de la <strong>compaction<\/strong> des sols (construction et agriculture).<\/p>\n<figure id=\"attachment_746\" aria-describedby=\"caption-attachment-746\" style=\"width: 500px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-746\" src=\"\/wp-content\/uploads\/2019\/11\/Bern_2005_das_Hochwasser_Altenberg_Quartier-500x375.jpg\" alt=\"\" width=\"500\" height=\"375\" srcset=\"https:\/\/bodenreise.ch\/wp-content\/uploads\/2019\/11\/Bern_2005_das_Hochwasser_Altenberg_Quartier-500x375.jpg 500w, https:\/\/bodenreise.ch\/wp-content\/uploads\/2019\/11\/Bern_2005_das_Hochwasser_Altenberg_Quartier-768x576.jpg 768w, https:\/\/bodenreise.ch\/wp-content\/uploads\/2019\/11\/Bern_2005_das_Hochwasser_Altenberg_Quartier-1024x768.jpg 1024w, https:\/\/bodenreise.ch\/wp-content\/uploads\/2019\/11\/Bern_2005_das_Hochwasser_Altenberg_Quartier.jpg 1600w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><figcaption id=\"caption-attachment-746\" class=\"wp-caption-text\">Berne 2005, l\u2019inondation (le quartier de l\u2019Altenberg photographi\u00e9 depuis le pont du Kornhaus) Source: commons.wikimedia.org<\/figcaption><\/figure>\n<p>Sources:<br \/>\n<a href=\"https:\/\/www.bafu.admin.ch\/bafu\/fr\/home\/themes\/sol\/publications-etudes\/publications\/richesses-du-sol.html\" target=\"_blank\" rel=\"noopener\">Richesses du sol (OFEV) 2015<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>D\u00e9sol\u00e9, cet article est seulement disponible en Deutsch.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-744","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/bodenreise.ch\/fr\/wp-json\/wp\/v2\/posts\/744","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bodenreise.ch\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bodenreise.ch\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bodenreise.ch\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bodenreise.ch\/fr\/wp-json\/wp\/v2\/comments?post=744"}],"version-history":[{"count":3,"href":"https:\/\/bodenreise.ch\/fr\/wp-json\/wp\/v2\/posts\/744\/revisions"}],"predecessor-version":[{"id":762,"href":"https:\/\/bodenreise.ch\/fr\/wp-json\/wp\/v2\/posts\/744\/revisions\/762"}],"wp:attachment":[{"href":"https:\/\/bodenreise.ch\/fr\/wp-json\/wp\/v2\/media?parent=744"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bodenreise.ch\/fr\/wp-json\/wp\/v2\/categories?post=744"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bodenreise.ch\/fr\/wp-json\/wp\/v2\/tags?post=744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}