Experiments	Soil adoption day	Bacterial biomass (×10⁸ cells g⁻¹)	${NH}_{4}^{+}$ oxidation activity (point)	${NO}_{2}^{-}$ oxidation activity (point)	N circulation activity (point)	P circulation activity (point)
Experiments	Soil adoption day	Bacterial biomass (×10⁸ cells g⁻¹)	${NH}_{4}^{+}$ oxidation activity (point)	${NO}_{2}^{-}$ oxidation activity (point)	N circulation activity (point)	P circulation activity (point)
Organic	February	35 ± 0.82^z	65 ± 2.45	52 ± 1.63	50.0 ± 2.45	8 ± 0.82
	May	20 ± 0.82	46 ± 2.45	60 ± 3.27	44.0 ± 1.63	4 ± 0.00
	August	14 ± 1.63	36 ± 3.27	51 ± 2.45	35.0 ± 0.82	2 ± 0.00
	October	18 ± 2.45	32 ± 0.82	47 ± 0.82	31.0 ± 1.63	4 ± 0.41
	Average	22 ± 0.67	45 ± 0.89	53 ± 0.91	40.0 ± 0.58	5 ± 0.34
Chemical	February	12 ± 0.00	38 ± 4.08	50 ± 0.82	36.0 ± 0.41	6 ± 0.00
	May	11 ± 0.82	33 ± 1.63	55 ± 2.45	35.0 ± 3.27	3 ± 0.82
	August	10 ± 0.82	21 ± 0.82	36 ± 1.63	21.0 ± 0.82	0 ± 0.00
	October	11 ± 1.63	29 ± 1.63	21 ± 0.82	18.0 ± 0.82	3 ± 0.00
	Average	11 ± 0.58	30 ± 1.22	41 ± 0.68	27.5 ± 1.13	3 ± 0.36
	t-test^y	n.s.	n.s.	n.s.	n.s.	n.s.