Table 1.

Categories of bacterial taxa.

Categories	RZ	RH	CZ	CH	CN	RN
Rare taxa, RT/%	32.03 (1095)	37.84 (1347)	33.48 (701)	56.22 (3799)	77.82 (6452)	72.74 (6414)
Abundant taxa, AT/%	0.00 (0)	0.00 (0)	0.05 (1)	0.00 (0)	0.06 (5)	0.03 (3)
Moderate taxa, MT/%	0.82 (28)	0.51 (18)	0.72 (15)	0.84 (57)	8.77 (727)	7.73 (682)
Conditionally rare taxa, CRT/%	65.69 (2246)	60.34 (2148)	63.90 (1338)	42.15 (2848)	13.29 (1102)	19.46 (1713)
Conditionally abundant taxa, CAT/%	0.47 (16)	0.53 (19)	0.72 (15)	0.31 (21)	0.06 (5)	0.07 (6)
Conditionally rare or abundant taxa, CRAT/%	0.99 (34)	0.84 (30)	1.15 (24)	0.47 (32)	0.00 (0)	0.00 (0)

The number of OTUs were showed in the bracket.