Effects of Revegetation on the composition and diversity of bacterial
and fungal communities of sandification land soil, in Southern China.
Abstract
This study aimed to research the effects of forest (Pinus elliottii,
slash pine) and shrub (Vitex trifolia) plantation on the soil microbial
community in sandification land by using the Illumina Miseq sequencing
of 16S rRNA and ITS rRNA genes and combined with the soil properties
analysis to explore the driving factors. Finally, the results showed
that the dominant bacterial phylum was Chloroflexi, Actinobacteria,
Proteobacteria, and Acidobacteria, the shrub and forest plantation
significantly increasing the proportion of Acidobacteria, while
decreasing the proportion of Proteobacteria. For the fungal community,
forest plantation was significantly changing the community structure at
the phylum level that shifted from Ascomycota to Basidiomycota, and the
ectomycorrhizal fungi take the most abundant with genus Rhizopogon
predominant. The soil bacterial Chao1 and Shannon indices were
significantly increased after revegetation, while the soil fungal
Shannon diversity in the forest land that significantly correlated with
soil total organic carbon and C/N was lower than that in the sandy and
shrub land (p<0.05). Besides, the bacterial and fungal
communities were significantly affected by soil water content among all
analyzed soil properties. Our results suggest that the revegetation
significantly increasing the soil bacterial diversity that correlated
with soil water content, total organic carbon, and available phosphorus,
but there was no significant change in community structure. In contrast,
slash pine plantation changes the fungal community structure and
diversity dramatically, and such changes should be attention because the
shift of fungi community structure and diversity may lead to the decline
of Pinaceae plantation.