TAILIEUCHUNG - Báo cáo lâm nghiệp: "Above- and belowground distribution of dry matter and carbon biomass of Atlantic beech (Fagus sylvatica L.) in a time sequence"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài: Above- and belowground distribution of dry matter and carbon biomass of Atlantic beech (Fagus sylvatica L.) in a time sequence. | Ann. For. Sci. 61 2004 683-694 INRA EDP Sciences 2004 DOI forest 2004063 683 Original article Above- and belowground distribution of dry matter and carbon biomass of Atlantic beech Fagus sylvatica L. in a time sequence Sandrine HUETa 1 FORGEARDa Claude NYSb a Équipe Dynamique des Communautés UMR CNRS ECOBIO 6553 Université de Rennes 1 Complexe Scientifique de Beaulieu 35042 Rennes Cedex France b Unité Biogéochimie des Écosystèmes Forestiers Inra - Centre de Nancy 54280 Champenoux France Received 2 May 2003 accepted 4 July 2003 Abstract - Forests could play an important role in limiting atmospheric CO2 levels. The aims of this work were to 1 produce data about the quantities of carbon stored in beech and in its different aerial and underground components in five stands in a time sequence 2 to clarify quantitatively and qualitatively the fate of carbon stocks during forest exploitation. The methods used to determine the different biomass components and the variability of carbon levels related to the components and tree-age are discussed. Total aerial and underground woody dry matter and carbon biomass increased from 24 t ha to 492 t ha and from 11 t ha to 232 t ha respectively from the 8-year-old stage to the 145-year-old stage. The carbon is mainly stored in the trunk. The underground biomass contribution is considerable 11 at the 145-year-old stage. The amount of carbon exported during the time sequence further thinnings and the clear felling was estimated to be 355 t ha that of the wood left on the ground 52 t ha and in the roots 65 t ha. carbon biomass beech time sequence distribution exportation Résumé - Compartimentation des biomasses aériennes et racinaires en matière sèche et carbone dans une chrono-séquence de hêtraie Fagus sylvatica L. atlantique. Les forets joueraient un rôle important dans la limitation de l élévation de la teneur en CO2 atmosphérique. Les objectifs de notre étude sont 1 d apporter des données sur les quantités de .

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