{"id":45723,"date":"2025-09-08T15:26:14","date_gmt":"2025-09-08T13:26:14","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&#038;p=45723"},"modified":"2025-09-08T15:26:14","modified_gmt":"2025-09-08T13:26:14","slug":"sols-forestiers-derniers-resultats-de-recherche-du-projet-gold","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/sols-forestiers-derniers-resultats-de-recherche-du-projet-gold\/","title":{"rendered":"Sols forestiers : derniers r\u00e9sultats de recherche du projet Gold"},"content":{"rendered":"<p>Le 4\u1d49 bulletin de veille du projet GOLD, dont l\u2019objectif est l\u2019am\u00e9lioration des pratiques foresti\u00e8res pour pr\u00e9server les propri\u00e9t\u00e9s physiques et chimiques des sols, a \u00e9t\u00e9 publi\u00e9 en juillet, pr\u00e9sentant plusieurs r\u00e9sultats de la recherche dans ce domaine :<\/p>\n<ul>\n<li>Une exp\u00e9rience dans les for\u00eats viennoises a compar\u00e9 des orni\u00e8res cr\u00e9\u00e9es il y a 1 an et 18 ans pour \u00e9valuer la r\u00e9cup\u00e9ration des sols. Les vers de terre ont montr\u00e9 une recolonisation progressive, bien que certaines esp\u00e8ces n\u2019aient pas retrouv\u00e9 leurs niveaux initiaux. L\u2019imagerie aux rayons X a r\u00e9v\u00e9l\u00e9 une r\u00e9cup\u00e9ration quasi compl\u00e8te de la porosit\u00e9 \u00e0 5 cm de profondeur, mais seulement partielle \u00e0 15 cm. Ainsi, malgr\u00e9 un retour de la faune et une am\u00e9lioration de la structure superficielle, les effets de la compaction persistent en profondeur apr\u00e8s 18 ans.<\/li>\n<li>Dans les for\u00eats de conif\u00e8res su\u00e9doises exploit\u00e9es cycliquement par coupes rases, l\u2019abondance des ectomycorhizes revient \u00e0 son niveau d\u2019avant coupe en moins de 20 ans. Cependant, ce n\u2019est pas le cas pour certaines esp\u00e8ces typiques des sols forestiers pr\u00e9sents dans les vieux peuplements.<\/li>\n<li>Dans les h\u00eatraies \u00e0 proximit\u00e9 de Vienne, l\u2019abattage manuel suivi d\u2019un d\u00e9bardage par c\u00e2ble n\u2019a un effet de compaction que sur les 5 premiers centim\u00e8tres de sol. Cette m\u00e9thode n\u2019augmente pas l\u2019\u00e9coulement de surface par rapport aux sites t\u00e9moins non exploit\u00e9s.<\/li>\n<li>D\u2019apr\u00e8s des m\u00e9ta-analyses r\u00e9alis\u00e9es \u00e0 l\u2019\u00e9chelle mondiale, il a \u00e9t\u00e9 montr\u00e9 que par rapport \u00e0 des plantations monosp\u00e9cifiques, les plantations en m\u00e9lange am\u00e9liorent non seulement les propri\u00e9t\u00e9s physico-chimiques des sols, mais \u00e9galement leur texture. Les principaux r\u00e9sultats montrent des am\u00e9liorations au niveau de la teneur en nutriments (augmentation de 9,6 % \u00e0 17,8 %), de la biomasse microbienne (de 17,2 % \u00e0 28,8 %), de la s\u00e9questration de carbone (de 7,2 % \u00e0 19,9 %) ou de la proportion de macroagr\u00e9gats (am\u00e9lioration de 5 %).<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>D\u2019autres r\u00e9sultats abordant les th\u00e9matiques de la compaction des sols ou de la r\u00e9colte de biomasse sont \u00e0 d\u00e9couvrir dans ce bulletin, disponible sur le site du GIP-ECOFOR.<\/p>","protected":false},"excerpt":{"rendered":"<p>Le 4\u1d49 bulletin de veille du projet GOLD, dont l\u2019objectif est l\u2019am\u00e9lioration des pratiques foresti\u00e8res pour pr\u00e9server les propri\u00e9t\u00e9s physiques et chimiques des sols, a \u00e9t\u00e9 publi\u00e9 en juillet, pr\u00e9sentant plusieurs r\u00e9sultats de la recherche dans ce domaine : Une exp\u00e9rience dans les for\u00eats viennoises a compar\u00e9 des orni\u00e8res cr\u00e9\u00e9es il y a 1 an [&hellip;]<\/p>","protected":false},"featured_media":45706,"template":"","categories":[50],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - 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