Root ingrowth reduces litter N remaining in SOM
Root ingrowth did not significantly alter litter C remaining in total
SOM (Fig. 2a , p>0.10) but reduced the litter N
remaining in total SOM by 20% relative to both root exclusion
treatments (Fig. 2b , p<0.001). Within the SOM
fractions, root ingrowth reduced both litter C (Fig. 2a , light
green, p=0.001) and litter N (Fig. 2b , light green,
p<0.001) remaining in the unprotected light POM fraction.