Table 1. Summary of physicochemical and microbiological properties of soils used in this study.

			Average	Standard deviation	Median	Maximum	Minimum	IQR a	RSD b
Physicochemical variables c	Temperature (Temp)		22.7	7.2	22.0	37.0	6.0	7.5	3.2 × 10−1
	pH		6.1	6.4 × 10−1	6.4	7.0	4.7	6.3 × 10−1	1.1 × 10−1
	Water content (WC)		22.1	12.7	18.6	56.1	8.5	11.4	5.8 × 10−1
	Total carbon (TC)		9.8	12.6	5.6	49.3	8.7 × 10−1	6.0	1.3
	Total nitrogen (TN)		2.5	4.8	6.8 × 10−1	20.1	1.5 × 10−1	1.0	2.0
		Ammonium-nitrogen (NH4 +-N)	0.2	0.4	7.2 × 10−2	1.7	2.1 × 10−2	8.1 × 10−2	1.9
		Nitrate-nitrogen (NO3 −-N)	1.5 × 10−1	1.4 × 10−1	9.6 × 10−2	5.2 × 10−1	4.0 × 10−2	4.2 × 10−2	9.5 × 10−1
	Total phosphorus (TP)		8.9 × 10−1	5.9 × 10−1	6.9 × 10−1	2.0	5.8 × 10−2	9.6 × 10−1	6.6 × 10−1
	Total sulfur (TS)		5.3 × 10−1	7.6 × 10−1	2.9 × 10−1	3.3	6.7 × 10−2	2.6 × 10−1	1.4
16S rRNA gene copy number d	Thaumarchaeota (NTHAUM)		5.9 × 106	5.8 × 106	3.3 × 106	1.8 × 107	3.5 × 104	8.1 × 106	9.8 × 10−1
	Archaea (NARCH)		1.1 × 107	9.9 × 106	8.6 × 106	4.1 × 107	7.0 × 104	1.4 × 107	8.7 × 10−1
	Bacteria (NBACT)		5.6 × 108	5.9 × 108	4.3 × 108	2.8 × 109	2.6 × 106	6.9 × 108	1.1
Relative abundance estimate e	Thaumarchaeota (RTHAUM)		1.4	1.0	1.1	4.8	9.3 × 10−2	1.1	7.7 × 10−1
	Archaea (RARCH)		2.7	1.5	2.4	6.3	7.3 × 10−1	1.7	5.5 × 10−1
	Bacteria (RBACT)		97.3	1.5	97.6	99.3	93.7	1.7	1.5 × 10−2

^a IQR, inter quartile range

^b RSD, relative standard deviation. RSD = SD/average, where SD = sample standard deviation.

^c Units of measurement: Temp, °C; WC, %; TC, TN, NH₄ ⁺-N, NO₃ ⁻-N, TP, and TS, mg/g dry soil.

^d Unit of measurement: 16S rRNA gene copy number/g dry soil.

^e R_THAUM = N_THAUM/N_PROK, R_ARCH = N_ARCH/N_PROK, and R_BACT = N_BACT/N_PROK, where N_PROK = N_ARCH + N_BACT.