Figure 3 Community barplot at phylum level (A) and genus level (B). The abscissa represents the percent of community abundance on the surface of the materials. The ordinate represents the sample names. Different colors correspond to the different types of phylum and genus on the right side, it can be seen that the bacterial species and abundance on the surface of 4 materials are different. Unclassifed_La refers to unclassified Lactobacillalles.