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Soil Bacterial Communities Under Different Long-Term Fertilization Regimes in Three Locations Across the Black Soil Region of Northeast China

文献类型： 外文期刊

作者： Hu Xiaojing 1 ; Liu Junjie 1 ; Wei Dan 3 ; Zhu Ping 4 ; Cui Xi'an 5 ; Zhou Baoku 3 ; Chen Xueli 3 ; Jin Jian 1 ; Liu Xiaobin 1 ;

作者机构： 1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Mollisols Agroecol, Harbin 150081, Heilongjiang, Peoples R China

2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

3.Heilongjiang Acad Agr Sci, Inst Soil Fertilizer & Environm Resources, Harbin 150086, Heilongjiang, Peoples R China

4.Jilin Acad Agr Sci, Inst Agr Resource & Environm, Changchun 130033, Jilin, Peoples R China

5.Heilongjiang Acad Agr Sci, Heihe Branch, Heihe 164300, Peoples R China

关键词： chemical fertilizer; geographical separation; Illumina MiSeq sequencing; Mollisols; organic fertilizer; soil properties; 16S rRNA gene

期刊名称：PEDOSPHERE （ 影响因子：3.911； 五年影响因子：4.814 ）

ISSN： 1002-0160

年卷期： 2018 年 28 卷 5 期

页码：

收录情况： SCI

摘要： Although soil bacteria play critical roles in agro-ecosystems, the knowledge of their response to long-term fertilization across the black soil region of Northeast China is limited. In this study, we sequenced 16S rRNA genes to assess the effects of four long-term fertilization regimes-non-fertilization (NoF), chemical fertilizer (CF), manure (M), and chemical fertilizer plus manure (CFM)-on soil properties and bacterial communities in three locations, the northern, middle, and southern parts, across the black soil region. Results showed that the influence of fertilization regimes on soil properties varied significantly among the three locations. Manure fertilization significantly increased microbial biomass carbon and relative abundance of copiotrophic bacteria. Principal component analysis (PCA) showed that the total bacterial communities were separated into three groups according to the sampling location despite long-term fertilization, and that soil pH was the most important factor in shifting bacterial communities. In addition, similar fertilization regimes resulted in different influences on bacterial community composition, and the most influential soil properties varied among the three locations. Our results highlighted that geographical separation was a more dominant factor affecting bacterial communities than fertilization, and that long-term similar fertilization regimes did not induce consistent changes in bacterial community composition in the black soil region.

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