tailieunhanh - Báo cáo lâm nghiệp: "Estimation of carbon stocks in a beech forest (Fougères Forest – W. France): extrapolation from the plots to the whole forest"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài:"Estimation of carbon stocks in a beech forest (Fougères Forest – W. France): extrapolation from the plots to the whole forest" | Ann. For. Sci. 63 2006 139-148 INRA EDP Sciences 2006 DOI forest 2005106 139 Original article Estimation of carbon stocks in a beech forest Fougeres Forest -W. France extrapolation from the plots to the whole forest Sandrine LECOINTEa Claude NYSb Christian WALTERc Frangoise FORGEARDa Sandrine HUETa Paula RECENAc Stéphane Follainc a Université de Rennes I CNRS IFR Caren UMR 6553 Ecobio Campus de Beaulieu 35042 Rennes Cedex France b Unité de Biogéochimie des E cosystèmes Forestiers INRA Centre de Nancy 54280 Champenoux France c UMR 1069 INRA ENSA INRA sAs Centre de Rennes 65 route de St Brieuc 35042 Rennes Cedex France Received 30 March 2005 accepted 25 October 2005 Abstract - The Kyoto Conference identified the need to establish an accurate inventory of carbon stocks in forests. Carbon stocks were estimated in a beech forest Fougères forest - France using a combination of in situ field samples with existing soil and vegetation maps. Soil humus and vegetation stocks were measured at 100 sampling points distributed throughout representative classes within the entire forest massif. Carbon levels in the soil and humus were determined in the laboratory models predicting the biomass were used to estimate the stocks in the vegetation. From the statistical analyses and existing maps these point data were extrapolated to the whole forest using two changes of scale. The total carbon stock was estimated to lie in a range between 442 200 and 505 105 tC a difference of 15 . Half of the carbon stock was found in the soil 45 in the vegetation and 5 in the humus. To evaluate the accuracy of this estimate possible sources of error were examined and quantified. The carbon stocks in the vegetation were the most variable. Nevertheless the results are likely to be integrated into future forest management plans and generalised in other contexts to evaluate carbon stocks at a regional scale. carbon stocks forests Fagus sylvatica scale change soil humus vegetation Résumé - .