Fig. 1

Species composition and diversity analysis. (A) In the Wayne chart, the numbers represent the number of OTUs. (B) In the sparse curve, the abscissa is the leveling depth, and the ordinate is the median value of the alpha diversity index calculated 10 times. (C) The taxonomy of species is shown; the abscissa is the sample, and the ordinate is the number of OTUs at different taxonomic levels. (D) The taxonomy composition is shown; the abscissa is the grouping, and the ordinate is the relative abundance of microbes at the phylum level. (E) The classification hierarchy tree is shown; the largest circle represents the phylum level, and the circles of gradually decreasing sizes represent the classes, orders, families, and genera. The larger the sector area is, the greater the abundance of the classification unit in the corresponding group. (F) For the alpha diversity index, the abscissa is the grouping, and the ordinate is the value of the alpha diversity index. The number under the diversity index label is the P value obtained from the Kruskal‒Wallis test, and * indicates significance, as determined by the post hoc Dunn’s test. (G) For NMDS analysis, the dots represent samples, and the colors represent the grouping. (H) For intergroup difference analysis, the box plot shows the distribution of the distances between samples within a group and a box plot shows the distances between the samples in the groups