Fig. 2: Allocation of soil-derived and litter-derived C to OM fractions.
From: Particulate organic matter as a functional soil component for persistent soil organic carbon

Content of free particulate organic matter (fPOM), occluded POM (oPOM, oPOMsmall), and mineral-associated OM (MAOM) in mg C g−1 Cbulk of (a) soil and (b) litter origin in three depths of coarse-textured and fine-textured soil (means, n = 3 independent replicates). Asterisks represent significant differences between the textures (*P = 0.007). Statistical significance was analyzed using an unpaired two-sided t-test.