Effects of stand age and soil properties on soil bacterial and fungal community composition in Chinese pine plantations on the Loess Plateau

The effects of Chinese pine (Pinus tabuliformis) on soil variables after afforestation have been established, but microbial community changes still need to be explored. Using high-throughput sequencing technology, we analyzed bacterial and fungal community composition and diversity in soils from thr...

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Bibliographic Details
Published in:	PloS one 2017-10, Vol.12 (10), p.e0186501-e0186501
Main Authors:	Dang, Peng, Yu, Xuan, Le, Hien, Liu, Jinliang, Shen, Zhen, Zhao, Zhong
Format:	Article
Language:	eng
Subjects:	Abundance Afforestation Age Agricultural land Analysis Bacteria Bacteria - classification Bacteria - isolation & purification Biochemistry Biology Biology and Life Sciences Carbon Carbon content China Community composition Community development Community structure Drought Earth Sciences Ecology and Environmental Sciences Ecosystem biology Ecosystems Environmental aspects Environmental restoration Forestry Forests Fungi Fungi - classification Fungi - isolation & purification Hydrocarbons Laboratories Loess Microbiology Microorganisms Next-generation sequencing Nutrients Nutrients in soil Old fields Pine Pine trees Pinus - microbiology Plant communities Plant diversity Plantations Rain Soil Soil carbon Soil erosion Soil Microbiology Soil microorganisms Soil nutrients Soil properties Soil sciences Soil structure Soils Taxa Technology assessment
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Summary:	The effects of Chinese pine (Pinus tabuliformis) on soil variables after afforestation have been established, but microbial community changes still need to be explored. Using high-throughput sequencing technology, we analyzed bacterial and fungal community composition and diversity in soils from three stands of different-aged, designated 12-year-old (PF1), 29-year-old (PF2), and 53-year-old (PF3), on a Chinese pine plantation and from a natural secondary forest (NSF) stand that was almost 80 years old. Abandoned farmland (BL) was also analyzed. Shannon index values of both bacterial and fungal community in PF1 were greater than those in PF2, PF3 and NSF. Proteobacteria had the lowest abundance in BL, and the abundance increased with stand age. The abundance of Actinobacteria was greater in BL and PF1 soils than those in other sites. Among fungal communities, the dominant taxa were Ascomycota in BL and PF1 and Basidiomycota in PF2, PF3 and NSF, which reflected the successional patterns of fungal communities during the development of Chinese pine plantations. Therefore, the diversity and dominant taxa of soil microbial community in stands 12 and 29 years of age appear to have undergone significant changes; afterward, the soil microbial community achieved a relatively stable state. Furthermore, the abundances of the most dominant bacterial and fungal communities correlated significantly with organic C, total N, C:N, available N, and available P, indicating the dependence of these microbes on soil nutrients. Overall, our findings suggest that the large changes in the soil microbial community structure of Chinese pine plantation forests may be attributed to the phyla present (e.g., Proteobacteria, Actinobacteria, Ascomycota and Basidiomycota) which were affected by soil carbon and nutrients in the Loess Plateau.
ISSN:	1932-6203 1932-6203