{"id":45958,"date":"2025-10-06T17:06:36","date_gmt":"2025-10-06T15:06:36","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&p=45958"},"modified":"2025-10-06T17:06:36","modified_gmt":"2025-10-06T15:06:36","slug":"mesure-du-bois-mort-au-sol-une-methode-innovante-en-flandre","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/mesure-du-bois-mort-au-sol-une-methode-innovante-en-flandre\/","title":{"rendered":"Mesure du bois mort au sol : une m\u00e9thode innovante en Flandre"},"content":{"rendered":"

Dans les r\u00e9serves foresti\u00e8res non g\u00e9r\u00e9es de Flandre, la quantit\u00e9 de bois mort au sol a rapidement augment\u00e9 au point que les m\u00e9thodes qui demandent la mesure de tous les fragments sont vite devenues tr\u00e8s compliqu\u00e9es \u00e0 mettre en \u0153uvre et chronophages. Dans la m\u00e9thode par \u00e9chantillonnage complet traditionnellement pratiqu\u00e9e (FAS), tout le bois mort couch\u00e9 dans la placette est mesur\u00e9 \u00e0 partir de 10 cm de diam\u00e8tre et sa position est localis\u00e9e avec pr\u00e9cision, pour pouvoir suivre son \u00e9volution dans le temps. Le nombre d\u2019objets mesur\u00e9s par placette a plus que doubl\u00e9 entre le premier et le second inventaire et ce nombre semble encore augmenter, rendant la m\u00e9thode trop contraignante. Une m\u00e9thode alternative, appel\u00e9e LIS, consiste \u00e0 ne compter que les bois morts qui croisent des transects lin\u00e9aires mais cette m\u00e9thode n\u2019est pas assez pr\u00e9cise pour certains suivis. Les chercheurs ont donc imagin\u00e9 une m\u00e9thode interm\u00e9diaire mixant les deux premi\u00e8res. La m\u00e9thode pr\u00e9voit de mesurer les \u00e9l\u00e9ments fins, qui repr\u00e9sentent 88 % du nombre mais seulement 33 % du volume, en appliquant la m\u00e9thode LIS sur trois segments lin\u00e9aires dispos\u00e9s en \u00e9toile dans les placettes. Les \u00e9l\u00e9ments plus gros (plus de 30 cm de diam\u00e8tre) de la placette sont par contre tous mesur\u00e9s et positionn\u00e9s selon la m\u00e9thode FAS. Cette m\u00e9thode mixte r\u00e9duit de 3 \u00e0 6 fois la charge de travail ant\u00e9rieure.<\/p>","protected":false},"excerpt":{"rendered":"

Dans les r\u00e9serves foresti\u00e8res non g\u00e9r\u00e9es de Flandre, la quantit\u00e9 de bois mort au sol a rapidement augment\u00e9 au point que les m\u00e9thodes qui demandent la mesure de tous les fragments sont vite devenues tr\u00e8s compliqu\u00e9es \u00e0 mettre en \u0153uvre et chronophages. Dans la m\u00e9thode par \u00e9chantillonnage complet traditionnellement pratiqu\u00e9e (FAS), tout le bois mort […]<\/p>","protected":false},"featured_media":45942,"template":"","categories":[50],"acf":[],"yoast_head":"\nMesure du bois mort au sol : une m\u00e9thode innovante en Flandre - For\u00eat.Nature<\/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:\/\/foretnature.be\/en\/resume-foret-mail\/mesure-du-bois-mort-au-sol-une-methode-innovante-en-flandre\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mesure du bois mort au sol : une m\u00e9thode innovante en Flandre - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Dans les r\u00e9serves foresti\u00e8res non g\u00e9r\u00e9es de Flandre, la quantit\u00e9 de bois mort au sol a rapidement augment\u00e9 au point que les m\u00e9thodes qui demandent la mesure de tous les fragments sont vite devenues tr\u00e8s compliqu\u00e9es \u00e0 mettre en \u0153uvre et chronophages. 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