Fig. 4
From: Divergent accumulation of microbial necromass and plant lignin components in grassland soils
Variations of lignin acid-to-aldehyde (Ad/Al) ratios in the Mongolian grassland soils. Pearson correlations of the Ad/Al ratios for vanillyl (V) and syringyl (S) phenols with soil organic carbon (SOC; a, c) and lignin phenol concentrations (b, d). Error bars represent s.e.m. for three site replicates. Black lines indicate linear regressions (p < 0.05; n = 13)
