3.4. Beta diversity analysis
Structural similarity was explored with the PCoA of the beta diversity analysis, which contained the first 2 principal coordinate axes. There was no appreciable change in the 2 groups before and after intervention (Fig. The plots indicate the PCoA analysis of 2 groups before and after the intervention. X-axis and Y-axis represent the first 2-component scores. PCoA = principal coordinates analysis.The plots present the PCA analysis of 2 groups before and after the intervention. X-axis and Y-axis represent the first 2-component scores. PCA = principal component analysis.The plots indicate the NMDS analysis of 2 groups before and after the intervention. NMDS = non-metric multi-dimensional scaling.