3.3 Density effects on the allometric relationships between
shoot and root biomass
The density effects on the allometric relationships were inconsistent
across the six species (Table 1; Figure 5). Among them, the scaling
exponents of S. viridis , C. squarrosa and L.
chinensis did not differ significantly among the five planting
densities (Figure 5b-d). Density had a significant effect on the scaling
exponents of C. glaucum and S. grandis , but the scaling
exponents fluctuated with increasing density (Figure 5a, f). In M.
sativa , the scaling exponents gradually decreased with increasing
density (Figure 5e).