Typical artificial Hippophae rhamnoides forest soil microbial response
to the soil environment of abandoned cropland in the Loess Plateau
Abstract
This study aimed to analyze the characteristics of soil microbial
communities of Hippophae rhamnoides forest during the revegetation of
abandoned cropland in the Loess Plateau in China. We used
high-throughput sequencing technology to analyze the carbon (C) and
nitrogen (N) characteristics of soil microorganisms and the relationship
between the soil environment and the soil microbial community structure
in pure and mixed Hippophae rhamnoides forests in Wuqi County, Shaanxi
province. The findings revealed that soil microbial C and N in different
soil layers showed a decreasing trend with an increase in soil layers
and the structural difference of the soil microbial community among
different forest stands in the study area was smaller than that among
different soil layers. Gracilibacteria, Gemmatimonadetes, Nitrospirae,
Parcubacteria, and Actinonobacteria in bacteria were significantly
correlated with soil environmental factors. Ichthyosporea and Ciliophora
in fungi were strongly affected by environmental factors. The effect of
environmental factors on bacteria is greater than that on fungi. Our
findings can provide some data to support and feasible suggestions for
studies on revegetation in the Loess Plateau.