In Canada, boreal open woodlands (OWs) show interesting afforestation potential, but no detailed study is available regarding the carbon fraction (CF) of dry matter in biomass and litter reservoirs (tonne C/tonne dry mass). This study aimed at providing the very first specific CF values of C reservoirs and compartments in OWs, with the main hypothesis that given the particular stand characteristics of OWs, more precise CF values than IPCC’s default values would significantly change the calculation of C stocks in OWs. Results indicate that even though the CF values measured in this study were significantly different among the different C reservoirs and compartments in OWs, they matched the IPCC default CF values for the biomass (0.50) and humus (0.37) reservoirs. Therefore, the main hypothesis of this study – that more precise CF values than IPCC’s default values would significantly change the calculation of C stocks in OWs – was not supported by the results. Consequently, the IPCC default values of the CF in the biomass and litter (humus) reservoirs can be used to estimate C stocks in boreal OWs, for example when using OWs as the baseline scenario in afforestation projects.

在加拿大，北方空旷的林地（OWs）表现出有趣的造林潜力，但尚无关于生物质和垃圾库中干物质的碳含量（CF）（吨C /吨干质量）的详细研究。这项研究旨在提供OW中C储层和隔室的第一个特定CF值，主要假设是，鉴于OW的特定林分特征，比IPCC的默认值更精确的CF值将显着改变OW中C储量的计算。 。结果表明，尽管本研究中测量的CF值在OW中不同的C储层和隔室之间存在显着差异，但它们与IPCC的生物量（0.50）和腐殖质（0.37）储层的默认CF值相匹配。因此，该研究的主要假设是-比IPCC的默认值更精确的CF值将显着改变OW中C储量的计算-结果未得到支持。因此，生物量和枯枝落叶（腐殖质）储层中CF的IPCC默认值可用于估算北方OW中的C储量，例如，当将OW作为造林项目的基准情景时。