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Solid Earth An interactive open-access journal of the European Geosciences Union
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Volume 8, issue 5
Solid Earth, 8, 1119–1129, 2017
https://doi.org/10.5194/se-8-1119-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Solid Earth, 8, 1119–1129, 2017
https://doi.org/10.5194/se-8-1119-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 26 Oct 2017

Research article | 26 Oct 2017

Land-use changes influence soil bacterial communities in a meadow grassland in Northeast China

Chengyou Cao, Ying Zhang, Wei Qian, Caiping Liang, Congmin Wang, and Shuang Tao Chengyou Cao et al.
  • College of Life and Health Sciences, Northeastern University, Shenyang 110169, People's Republic China

Abstract. The conversion of natural grassland into agricultural fields is an intensive anthropogenic perturbation commonly occurring in semiarid regions, and this perturbation strongly affects soil microbiota. In this study, the influences of land-use conversion on the soil properties and bacterial communities in the Horqin Grasslands in Northeast China were assessed. This study aimed to investigate (1) how the abundances of soil bacteria changed across land-use types, (2) how the structure of the soil bacterial community was altered in each land-use type, and (3) how these variations were correlated with soil physical and chemical properties. Variations in the diversities and compositions of bacterial communities and the relative abundances of dominant taxa were detected in four distinct land-use systems, namely, natural meadow grassland, paddy field, upland field, and poplar plantation, through the high-throughput Illumina MiSeq sequencing technique. The results indicated that land-use changes primarily affected the soil physical and chemical properties and bacterial community structure. Soil properties, namely, organic matter, pH, total N, total P, available N and P, and microbial biomass C, N, and P, influenced the bacterial community structure. The dominant phyla and genera were almost the same among the land-use types, but their relative abundances were significantly different. The effects of land-use changes on the structure of soil bacterial communities were more quantitative than qualitative.

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The influences of land-use conversion on soil properties and bacterial communities were assessed. Diversity was detected in four distinct land-use systems through high-throughput sequencing. Land-use changes affected soil properties and bacterial community structures. The microbial dominant taxa were unchanged, but their relative abundances were significantly different, indicating that the effects of land-use conversion on bacterial communities were more quantitative than qualitative.
The influences of land-use conversion on soil properties and bacterial communities were...
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