Fig. 1. Nonmetric multidimensional scaling plots (NMDS) of microbial gene composition for P-transformation in soils with and without P or N input.
ANOSIM showed significant differences (p < 0.05) in gene composition between the –N and +N treatments, and nonsignificant differences (p > 0.05) between the –P and +P treatments. DistLM indicates that soil pH had the closer correlations with gene composition compared with soil N:P ratio.