Variation in the Basic Density of the Tree Components of Gray Alder and Common Alder

Species-specific basic density (BD) data are necessary to improve the indirect methods of biomass determination. The tree components (e.g., bark, branches, roots) is studied much less than that stem wood. Nevertheless, ignoring specific BD values these in calculations can lead errors. study aims investigate variation aboveground and belowground by studying a total 162 gray alder (Alnus incana (L.) Moench) common glutinosa Gaertn.) trees. From them, 55 stumps were excavated determine components. Our findings reveal volume-weighted (wood bark) branch higher compared alder. Both species have similar bark density, while for wood both increases upward from stump top. Compared alders, stems alders more distinct radial within-stem variation. According our results, application default Alnus spp. recommended IPCC guidelines calculation carbon stock likely causing overestimation. obtained on alders’ will allow accurate appraisals forests.