Figure
4. Linear regression between (a) molar C:P ratio of maximal total
release amount (TRAC :P) and the
C:P ratio of leaf litter biomass, (b) molar C:N ratio of maximal total
amount release (TRAC :N) and the
C:N ratio of leaf litter biomass and (c) molar N:P ratio of maximal
total amount release (TRAN :P) and
the N:P ratio of leaf litter biomass. Red circles denote broadleaf leaf
litter and aqua blue circles denote coniferous leaf litters. Numbers
signify tree species in the order outlined in Figure 2. Significant
linear regression and the 95% confidence interval of the linear fitting
are presented as solid lines and shaded areas.