Root ingrowth alters the balance of C in SOM pools
Of the litter C that remained in SOM, root ingrowth altered the balance of C between SOM pols. Root ingrowth decreased the proportion of litter C remaining in light POM (Fig. 3a , p<0.001) and increased the proportion of litter C incorporation into protected heavy POM (Fig. 3b , p=0.001). Roots did not significantly alter the incorporation of litter C into MAOM (Fig. 3c ).