3.2 Soil bacterial community diversity indexes
The indices, Sobs, Chao and ACE, which reflect the richness of the soil bacterial community, have the same rule: the value in SF is significantly higher than that in PB, and the value in CSF is significantly lower than that in SF but is significantly higher than that in PB (Fig. 2A, B, C). The indices reflecting bacterial community diversity included Shannon, Simpson and pd indices. The Shannon index in SF was significantly higher than that in PB, while the Shannon index in CSF was not significantly different from that in SF but was significantly higher than that in PB (Fig. 2D). There was no significant difference in the Simpson index between SF, PB and CSF (Fig. 2E). Pd in SF was significantly higher than that in PB, and Pd in CSF was significantly lower than that in SF but significantly higher than that in PB (Fig. 2F). The indices reflecting community evenness included Shannoneven and Simpsoneven indices, and Shannoneven in CSF was significantly higher than that in PB (Fig. 2H, I). The index reflecting the community coverage was Coverage, and there was no significant difference in the value of SF, PB and CSF, and the values were all close to 1 (Fig. 2G).