Fig. 1

Principal coordinate analysis (PCoA) of 9 samples based on the composition of bacterial community. Group1 (red): SY(A), SY(O), Group2 (blue): SX-I(A), SX-I(O), Group3 (orange): SX-II(OD), SX-III(OD), Group4 (green): QG (Ana), QG(Ano) and QG(O)