Abstract
Biomass estimation is one of the crucial tasks of forest ecology. Drying tree material is a crucial stage of preparing biomass estimation tools. However, at this step researchers use different drying temperatures, but we do not know how this influences accuracy of models. We aimed to assess differences in dry biomass between two drying temperatures (75 °C and 105 °C) in tree biomass components and to provide coefficients allowing for recalculation between the given temperatures. We used a set of 1440 samples from bark, branches, foliage and wood of eight European tree species: Abies alba Mill., Alnus glutinosa (L.) Gaertn., Betula pendula Roth., Fagus sylvatica L., Larix decidua Mill., Picea abies (L.) H. Karst., Pinus sylvestris L. and Quercus robur L. The differences between drying temperatures were 1.67%, 1.76%, 2.20% and 0.96% of sample dry masses of bark, branches, foliage and stem wood, respectively. Tree species influenced these differences. Our study provided coefficients allowing for recalculation of masses between the two temperatures, to unify results from different studies. However, the difference in dry mass between the two temperatures studied is lower than the range of uncertainty of biomass models, thus its influence on results of large-scale biomass assessments is low.
Highlights
Biomass estimation is one of the crucial tasks of forest ecology
Permanence of carbon storage in forest ecosystems is vulnerable to natural and human disturbances, especially fire, pests and w ind[6]. Another uses of tree biomass in climate change mitigation covers usage of biochar–biomass pyrolytically converted into charcoal, and biomass combustion instead of fossil fuels
The highest D was in P. abies and P. sylvestris and the lowest in B. pendula (Table 3)
Summary
Drying tree material is a crucial stage of preparing biomass estimation tools At this step researchers use different drying temperatures, but we do not know how this influences accuracy of models. The differences between drying temperatures were 1.67%, 1.76%, 2.20% and 0.96% of sample dry masses of bark, branches, foliage and stem wood, respectively Permanence of carbon storage in forest ecosystems is vulnerable to natural and human disturbances, especially fire, pests and w ind[6] Another uses of tree biomass in climate change mitigation covers usage of biochar–biomass pyrolytically converted into charcoal, and biomass combustion instead of fossil fuels. Due to relatively constant carbon content within species and tree c omponents[12,13,14], assessment of carbon pools is based on the variability of biomass in forest ecosystems. Species Abies alba Alnus glutinosa Betula pendula Fagus sylvatica Larix decidua Picea abies Pinus sylvestris Quercus robur
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