Fig. 5. Total amino sugar concentrations and ratios of glucosamine to galactosamine (GlcNl + GalN) and glucosamine to muramic acid (GluN + MurA) in size separates of the different land use systems at the Wushwush and Munesa sites. 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; N. forest, natural forest; T. plantation, Tea plantation; C. plantation, Cupressus plantation.