{"id":6690,"date":"2020-07-07T10:36:21","date_gmt":"2020-07-07T10:36:21","guid":{"rendered":"http:\/\/4returns.commonland.com\/?post_type=toolbox&#038;p=6690"},"modified":"2021-06-03T15:45:04","modified_gmt":"2021-06-03T15:45:04","slug":"impacts-of-land-use-change-and-climatic-effects-on-streamflow-in-the-chinese-loess-plateau-a-meta-analysis","status":"publish","type":"toolbox","link":"https:\/\/4returns.commonland.com\/fr\/toolbox\/impacts-of-land-use-change-and-climatic-effects-on-streamflow-in-the-chinese-loess-plateau-a-meta-analysis\/","title":{"rendered":"Impacts des changements d'utilisation des sols et des effets climatiques sur le d\u00e9bit des cours d'eau du plateau de Loess en Chine : Une m\u00e9ta-analyse"},"content":{"rendered":"<div id=\"ab015\" class=\"abstract author\" lang=\"en\">\n<div id=\"as015\">\n<p id=\"sp0015\">L'utilisation des sols et le changement climatique sont reconnus comme deux facteurs majeurs influen\u00e7ant le d\u00e9bit des cours d'eau de surface. C'est \u00e9galement le cas pour le plateau chinois du Loess, o\u00f9 plusieurs projets de restauration des terres ont modifi\u00e9 la couverture terrestre au cours des derni\u00e8res d\u00e9cennies. C'est pourquoi cette \u00e9tude s'est int\u00e9ress\u00e9e \u00e0 l'\u00e9volution du d\u00e9bit des cours d'eau sur le plateau de Loess et \u00e0 la mani\u00e8re dont l'utilisation des terres et le changement climatique ont contribu\u00e9 \u00e0 ce changement. Pour ce faire, une m\u00e9ta-analyse a \u00e9t\u00e9 r\u00e9alis\u00e9e sur les donn\u00e9es hydrologiques et m\u00e9t\u00e9orologiques de 22 publications couvrant 25 bassins versants diff\u00e9rents du plateau de Loess.<\/p>\n<p>Les r\u00e9sultats indiquent une diminution du d\u00e9bit dans 41 des 52 \u00e9tudes de cas. Sur l'ensemble des \u00e9tudes, la r\u00e9duction du d\u00e9bit a \u00e9t\u00e9 estim\u00e9e \u00e0 -0,46 mm\/an. Les pr\u00e9cipitations n'ont pas chang\u00e9 dans la plupart des \u00e9tudes. On estime que le changement d'utilisation des sols a un impact de 63,521 TTP3 sur la r\u00e9duction du d\u00e9bit, et que le changement climatique semble \u00eatre \u00e0 l'origine de 36,481 TTP3 de l'impact. Ils ont \u00e9galement constat\u00e9 que plus la zone de conservation des sols et de l'eau est \u00e9tendue, plus la r\u00e9duction du d\u00e9bit est importante.<\/p>\n<p>La conclusion est donc que sur le plateau chinois de Loess, le d\u00e9bit des cours d'eau a tendance \u00e0 diminuer et que la restauration des terres est la principale cause de cette r\u00e9duction.<\/p>\n<\/div>\n<\/div>\n<div id=\"ab005\" class=\"abstract graphical\" lang=\"en\"><em>Photo : Plateau de Loess avant (1995, \u00e0 gauche) et apr\u00e8s une restauration majeure du paysage (2009, \u00e0 droite)<\/em><\/div>\n<div lang=\"en\"><\/div>\n<div lang=\"en\"><\/div>","protected":false},"author":31,"featured_media":6691,"comment_status":"open","ping_status":"closed","template":"","tags":[413],"topics":[284],"toolbox_type":[381],"class_list":["post-6690","toolbox","type-toolbox","status-publish","has-post-thumbnail","hentry","tag-expert","topics-restoring-nature","toolbox_type-academic-article"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Impacts of land use change and climatic effects on streamflow in the Chinese Loess Plateau: A meta-analysis | The 4 Returns Community Platform<\/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:\/\/4returns.commonland.com\/fr\/toolbox\/impacts-of-land-use-change-and-climatic-effects-on-streamflow-in-the-chinese-loess-plateau-a-meta-analysis\/\" \/>\n<meta property=\"og:locale\" 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