Results of two-way ANOVA testing the effect of the clipping treatment (C) and the harvesting seasons (H) (spring, summer, autumn, spring+1 yr) on total biomass and root/shoot ratio as well as on the percentage of the various tree components.

Significant effects (P<0.05) are given in bold.具有统计学显著性的效应（P<0.05）以粗体标注。