Figure 4.

Relative abundance and biological function of the main bacterial communities in the S2N and S2L groups. Top 5 of the differential main functions of the species with an abundance value greater than 1% between S2N and S2L groups were carbohydrate metabolism, global and overview maps, amino acid metabolism, energy metabolism, and metabolism of cofactors and vitamins. The longitudinal coordinate represents the bacterial community relative abundance, with the same color labeling the associated biological function.