Fig. 4

The contents of soil active organic carbon components in Chinese fir plantations at different elevations. EOC easily oxidizable organic carbon, POC particulate organic carbon, DOC dissolved organic carbon, MBC microbial biomass carbon. Different letters on the bars (Means ± S.E., n = 9) indicate significant differences between elevations in the same soil layers (A and B), and between the different soil layers in the same elevations (a and b). (LSD test, p < 0.05).