Fig. 3. Average concentrations of CuO-oxidation products (VSC) and ratios of lignin-derived phenols in size separates of the different land use system at the Wushwush and Munesa sites. VSC, vanillyl+syringyl+cinnamyl; (Ac/Al)V,S, acid to aldehyde ratio of vanillyl and syringyl; S/V, syringyl to vanillyl ratio; letters above the bars indicate significant differences between mean values of the same size separates of the different land use systems at P < 0.05; bars without letters are not significant; N. forest, natural forest; T. plantation, Tea plantation; C. plantation, Cupressus plantation.
