Bacterial biomass (×108 cells∙g−1) | NH+ 4 oxidation activity (point) | NO− 2 oxidation activity (point) | N circulation activity (point) | P circulation activity (point) | ||
Black soil | n.d ± 0z | 7.0 ± 0.82 | 27.0 ± 1.63 | 1.0 ± 0 | 0 ± 0.0 |