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. 2017 Jun 15;7:3608. doi: 10.1038/s41598-017-03778-7

Table 1.

Microbial alpha-diversity characteristics for the fallow and switchgrass soils in four layers.

Soil samples		No. of high quality reads		Diversity Index
		No. of high quality reads		Observed OTU₉₇		Chao1		Shannon		Coverage
		Average	SD*	Average	SD	Average	SD	Average	SD	Average	SD
Fallow	Layer 1	48925	7455	3786	770	5038.84	1423.12	10.11	0.44	0.95	0.02
	Layer 2	46956	10201	3480	857	4696.74	1529.37	9.64	0.99	0.96	0.02
	Layer 3	43865	12645	3802	369	4924.32	1293.83	10.26	0.05	0.96	0.02
	Layer 4	35819	5319	3005	413	3459.12	460.01	9.31	0.71	0.97	0.00
Switchgrass	Layer 1	51365	8028	4307	192	5866.10	653.67	10.41	0.15	0.95	0.01
	Layer 2	45093	13879	4018	871	5686.97	1263.94	10.09	0.72	0.95	0.01
	Layer 3	47804	4410	4101	275	5538.59	451.94	10.35	0.14	0.95	0.01
	Layer 4	52428	3250	3590	565	5050.41	678.51	8.69	1.35	0.95	0.01

*Standard deviation.