2-2-2- Step 2: Calculating biomass volume in an individual tree unit using allometric equations
To calculate the above-ground and below-ground biomass of a tree, we used the well-known method developed by Ponce-Hernandez and colleagues in 2014. The method contained several parameters of DBH, height, and wood density (Ponce-Hernandez et al., 2004). To calculate the above-ground biomass (trunk and crown) and below-ground biomass (root) following sub-steps were taken: