In vegetated terrestrial ecosystems, carbon in below- and aboveground biomass (BGB, AGB) often constitutes a significant component of total-ecosystem carbon stock. Because carbon in the BGB is difficult to measure, it is often estimated using BGB to AGB ratios. However, this ratio can change markedly along resource gradients, such as water availability… (More)
Figure 2. Eucalyptus populnea allometry along a rainfall gradient. Allometric relationships shown are between ln(D30cm) and A measured ln(AGB), B same as A but with the addition of estimated biomass for hollow stem for trees at the low rainfall site, C ln(CRB), D same as C but with estimates for hollow root crown biomass included for the trees at the low-rainfall site. D30cm, stem diameter at 30 cm height; AGB, aboveground biomass; CRB, coarse-root biomass.