*, P < 0.05; **, P < 0.01; ***,P < 0.001.
† OTU richness of mycorrhizal fungi: AM fungal OTU richness for AM
trees, and ECM fungal OTU richness for ECM trees.
Alnus data were not analyzed because its sample size was very
small.
Dry weight of Clethra and Betula seedlings were too light
to measure.
PC1, nutrient_PC1.
Table 7 Multiple comparisons of the estimates for tree seedling
performance concerning the substrates where the relationships with
substrates were selected as a factor in the models in Table 6.