5 | CONCLUSIONS
In this study, there were significant differences among the soil
rhizosphere microorganisms in samples from Masson pine families with
different carbon sequestration abilities. With the increase in the
carbon sequestration ability of the families, the dominant phylum of the
soil rhizospheric bacteria changed from Proteobacteria to Acidobacteria,
and the dominant phylum of fungi changed from Ascomycota to
Basidiomycota. Compared with bacteria, fungi were more sensitive to
carbon sequestration by Masson pine. On the other hand, by comparing the
rhizosphere bacterial and fungal genera among samples from different
families, we discovered a rich core bacterial and a fungal community,
indicating the homogeneity of rhizosphere microbial diversity as the
carbon sequestration activity of Masson pine varied. A significant
proportion of the core microbiome was involved in carbon metabolism;
these microorganisms might be better adapted to the acidic conditions of
the native soil and respond more efficiently to root signals than other
microorganisms. The composition and abundance of rhizosphere bacterial
and fungal communities were greatly affected by the soil carbon content,
soil moisture and altitude but were less affected by soil pH (exceptSaitozyma ). This experiment provides early guidance for future
in-depth research on the specific mechanisms and patterns of the soil
microbial response to carbon sequestration by Masson pine.