3.4 Soil bacterial community β diversity
The results of NMDS analysis based on Bray‒Curtis showed that the soil
bacterial communities at the
genus, family, class and phylum levels showed clear aggregation types in
SF, PB and CSF (Fig. 3A, D, H, K). At the class and phylum levels, the
distance between SF and PB was not significantly different from that
between SF and CSF, both of which were significantly higher than that
between PB and CSF (Fig. 3C, F). At the genus and family levels, the
Bray‒Curtis distance between the soil bacterial communities of SF and PB
was the largest, which was significantly greater than the distance
between SF and CSF, and the distance between PB and CSF and the distance
between CSF and SF were significantly higher than the distance between
CSF and PB (Fig. 3J, M).