{"id":82377,"date":"2019-01-30T12:13:03","date_gmt":"2019-01-30T17:13:03","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/impact-nutrient-removal-through-harvesting-sustainability-boreal-forest\/"},"modified":"2019-01-30T12:13:03","modified_gmt":"2019-01-30T17:13:03","slug":"impact-nutrient-removal-through-harvesting-sustainability-boreal-forest","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/impact-nutrient-removal-through-harvesting-sustainability-boreal-forest\/","title":{"rendered":"Impact of nutrient removal through harvesting on the sustainability of the boreal forest"},"content":{"rendered":"\n<p>Published in <strong>Ecological Applications 18(7): 1642-1651<\/strong><\/p>\n<p>The cycling of base cations (K, Ca, Mg, and Na) was investigated in a boreal balsam fir forest (the Lake Laflamme Watershed) between 1999 and 2005. Base cation budgets were calculated for the soil rooting zone that included atmospheric deposition and soil leaching losses, two scenarios of tree uptake (whole-tree and stem-only harvesting), and three scenarios of mineral weathering, leading to six different scenarios. In every scenario there was a net accumulation of Mg within the soil exchangeable reservoir, while Ca accumulated in four scenarios. Potassium was lost in five of the six scenarios. Contrary to Ca and Mg, immobilization of K within tree biomass (69 mol<sup>.<\/sup>ha<sup>-1.<\/sup>yr<sup>.-1<\/sup>) was the main pathway of K losses from the soil exchangeable reservoir, being five times higher than losses via soil leaching (14 mol<sup>.<\/sup>ha<sup>-1.<\/sup>yr<sup>.-1<\/sup>). The amounts of K contained within the aboveground biomass and the exchangeable soil reservoir were 3.3 kmol\/ha and 4.2 kmol\/ha, respectively. Whole-tree harvesting may thus remove 44% of the K that is readily available for cycling in the short term, making this forest sensitive to commercial forestry operations. Similar values of annual K uptake as well as a similar distribution of K between tree biomass and soil exchangeable reservoirs at 14 other coniferous sites, distributed throughout the boreal forest of Qu\u00e9bec, suggest that the Lake Laflamme Watershed results can be extrapolated to a much larger area. Stem-only harvesting, which would reduce K exports due to biomass removal by 60%, should be used for these types of forest.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Published in Ecological Applications 18(7): 1642-1651 The cycling of base cations (K, Ca, Mg, and Na) was investigated in a boreal balsam fir forest (the Lake Laflamme Watershed) between 1999 and 2005. Base cation budgets were calculated for the soil rooting zone that included atmospheric deposition and soil leaching losses, two scenarios of tree uptake [&hellip;]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1183,1185,1180,1181],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[],"class_list":["post-82377","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-ecosystems-and-environment","cptt_theme-forest-ecology","cptt_theme-forestry-research","cptt_theme-forests","cptt_categ_publi-scientific-article"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Impact of nutrient removal through harvesting on the sustainability of the boreal forest - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"Stem-only harvesting, which would reduce K exports due to biomass removal by 60%, should be used for these types of forest.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/impact-nutrient-removal-through-harvesting-sustainability-boreal-forest\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Impact of nutrient removal through harvesting on the sustainability of the boreal forest - 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