Fig. 3From: Effects of tree species and topography on soil and microbial biomass stoichiometry in Funiu Mountain, ChinaEffect of three tree species on the soil organic C, N and P contents. The vertical line indicates the standard error. Capital letters and lowercase letters represent a significant difference between different tree species at depths of 0–10 cm and 10–20 cm, respectively. According to the Duncan test, different letters indicate a significant difference between tree species (p < 0.05), while “ns” indicates no significant differenceBack to article page