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.