Table 1. Sample information and microbial alpha diversity.

Yucha samples	Sampling location	pH value	TTA (mL)	Reads number
QZU (n = 6)	QiongZhong	3.96 ± 0.11	11.7 ± 0.3	25579 ± 1028
CJU (n = 6)	ChangJiang	3.74 ± 0.05	11.9 ± 0.5	24807 ± 2022
BTU (n = 6)	BaoTing	3.42 ± 0.47	13.6 ± 1.6	24282 ± 1487
BSU (n = 6)	BaiSha	3.51 ± 0.26	12.3 ± 0.4	25731 ± 3215
Yucha samples	OTU number	Shannon index	Simpson index	Chao 1 index
QZU (n = 6)	99 ± 15	2.34 ± 0.55	0.18 ± 0.02	137 ± 11
CJU (n = 6)	107 ± 33	2.15 ± 0.21	0.22 ± 0.05	130 ± 18
BTU (n = 6)	95 ± 18	2.39 ± 0.18	0.15 ± 0.02	119 ± 26
BSU (n = 6)	91 ± 21	2.27 ± 0.32	0.18 ± 0.04	116 ± 14