Fig. 4: Effects of target species and plantation condition on
the nutrition-addition effect. Significant differences between the
average value of S. grandis and S. krylovii are indicated
by asterisks (**P <0.01; ***P <0.001).
Non-significant differences among plantation conditions for the same
target species are indicated by the same English letters. All average
values are significantly higher than zero except the one with
‘ns’.