YANG Yun-li, XU Ming, ZOU Xiao, CHEN Jin, ZHANG Jiao, ZHANG Jian. Effects of Different Vegetation Types on the Characteristics of Soil Bacterial Communities in the Hilly Area of Central Guizhou[J]. Journal of Ecology and Rural Environment, 2021, 37(4): 518-525. DOI: 10.19741/j.issn.1673-4831.2020.0793
    Citation: YANG Yun-li, XU Ming, ZOU Xiao, CHEN Jin, ZHANG Jiao, ZHANG Jian. Effects of Different Vegetation Types on the Characteristics of Soil Bacterial Communities in the Hilly Area of Central Guizhou[J]. Journal of Ecology and Rural Environment, 2021, 37(4): 518-525. DOI: 10.19741/j.issn.1673-4831.2020.0793

    Effects of Different Vegetation Types on the Characteristics of Soil Bacterial Communities in the Hilly Area of Central Guizhou

    • In order to study the effects of different vegetation types on soil properties and bacterial community structure in the hilly areas of the central Guizhou, three vegetation types, including shrub, coniferous forest and broad-leaved forest were selected for analyzing the physical and chemical properties of the soils. The 16S rRNA gene of soil bacteria was analyzed by high-Throughput sequence. The results show that soil pH in coniferous forest was significantly lower than in shrubland and broad-leaved forest (P < 0.05). The total nitrogen content in broad-leaved forest was significantly higher than shrubland and coniferous forest (P < 0.05). A total of 5 501 bacterial operational taxonomic units (OTUs) in the soils were detected, and the OTUs are belonging to 42 phyla, 125 classes, 297 orders, 509 families and 1 021 genera. Proteobacteria, Acidobacteria and Actinobacteria were dominant phyla. The abundance of Proteobacteria showed an increasing trend as vegetation succession stages, while the abundance of Actinobacteria showed a opposite trend. Sphingobacillus, unclassified Streptomycetaceae, unclassified Acidobacteriales, Bradyrhizobium and Bryobacter were dominant genus. The abundance of Sphingobacillus showed a gradually increasing trend during vegetation succession stages. The diversity of soil bacterial community was significantly different among different vegetation types (P < 0.05), shrubland showed the highest diversity of soil bacterial community. PCoA analysis show that there were differences in the composition and structure of soil bacterial community among different vegetation types. The redundancy analysis show that total phosphorus, available phosphorus and bulk density were the main influencing factors which could affect soil bacterial community structure among different vegetation types (P < 0.05).
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