Purpose: This study aims to analyze the differences of soil bacterial community structure under different vegetation restoration types, and to determine feasible strategies for revegetation of grain for green area in the Loess Plateau.
Methods: High-throughput sequencing technology was used to analyze the alpha diversity of soil bacteria, community structure characteristics and the correlation between soil environmental factors and bacterial communities in different vegetation restoration types.
Results: The findings reveal that soil microbial C and N in different soil layers shows a decreasing trend with an increase in soil layers. Across all samples, the dominant groups are Proteobacteria, Acidobacteria, Chloroflexi, Gemmatimonadetes, Nitrospirae, Bacteroidetes, GAL15, and Firmicutes. Soil nutrient supply, such as TOC, TN, AN, AP, and AK, had crucial roles in shaping the composition and diversity of the bacterial communities.
Conclusions: Based on the results, our data provides a starting point for establishing soil bacterial databases in the Loess Plateau, as well as for the plants associated with the vegetation restoration.