Table 2.

α-diversity of bacteria from the soil samples distance < 0.03.

Samples	Unique tags	Number of OTUs	α-diversity
			Chao1	Shannon	Simpson
R. pseudoacacia	118,357	2,447	2,622	8.67	0.9907
P. massoniana	90,533	2,233	2,495	8.66	0.991
C. dactylon	109,808	2,506	2,722	9.02	0.9944