Changes of the organic carbon content and stability of soil aggregates affected by soil bacterial community after afforestation
Changes of the organic carbon content and stability of soil aggregates affected by soil bacterial community after afforestation
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造林后土壤细菌群落对土壤团聚体有机碳含量及稳定性的影响
DOI：
10.1016/j.catena.2018.08.006
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发表时间：
2018-12
期刊：
影响因子：
6.2
通讯作者：
Doughty R.
中科院分区：
文献类型：
--
作者：
Zhao F. Z.;Fan X. D.;Ren C. J.;Zhang L.;Han X. H.;Yang G. H.;Wang J.;Doughty R.
土壤团聚体是影响土壤有机碳稳定的重要因素之一，团聚体的稳定性在一定程度上取决于土壤微生物的多样性和组成。造林后土壤细菌群落与团聚体有机碳含量之间的相互作用尚不清楚。在这项研究中，我们利用高通量16S rRNA测序技术研究了土壤细菌多样性的差异，以及土壤团聚体中有机碳含量的差异，这些团聚体代表了42、27和17 年的假芽孢杆菌（frobinia pseudoacaciaL）。演替（RP42， RP27和RP17），以及在农田土壤（FL）中进行比较的谷子（Setaria italica）和大豆（Glycinemax）轮作。在RP17、RP27和RP42样地，大团聚体（>1 mm）、小团聚体（0.25 - 1 mm）和微团聚体（<0.25 mm）中，土壤有机碳含量分别显著高于FL，平均高出85.57%、142.37%和76.69%。FL样地Simpson指数显著高于RP17、RP27和RP42样地，而Shannon指数则相反。在绿化和FL位点检测到的优势菌门分别为变形菌门、酸性菌门和放线菌门。这些数据揭示了土壤团聚体特征（如有机碳含量、平均重量直径（MWD）和几何平均直径（GMD））与变形菌门、放线菌门、酸杆菌门、绿杆菌门、双胞菌门、硝化菌门、Verrucomicrobia和plantomycetes的相对丰度之间的显著相关性。这些关系表明，造林对土壤团聚体有机碳稳定的影响受土壤团聚体大小和土壤细菌多样性的调节。研究表明，土壤团聚体大小与土壤微生物之间的相互作用可能是土壤保持、土壤修复、农业生态系统可持续性和土壤侵蚀预防的关键因素。
Soil aggregation is one of the most important factors affecting soil organic carbon (SOC) stabilization, and the stability of aggregates depends in part on soil microbial diversity and composition. Interactions between the soil bacterial community and SOC content in soil aggregates after afforestation are poorly understood. In this study, we investigated difference in the diversity of soil bacterial with high-throughput 16S rRNA sequencing, as well as the SOC content in soil aggregates representing a chronosequence of 42, 27, and 17 years ofRobinia pseudoacaciaL. succession (RP42, RP27, and RP17), and in farmland (FL) soil for comparison (millet (Setaria italica) and soybean (Glycinemax) rotation).The SOC content in RP17, RP27, and RP42 plots were significantly higher than that of FL by an average of 85.57%, 142.37%, and 76.69% in large macro-aggregates (>1 mm), small macro-aggregates (0.25–1 mm), and micro-aggregates (<0.25 mm), respectively. The Simpson index for the FL plot was significantly higher than that of the RP17, RP27, and RP42 plots, whereas the Shannon index followed the opposite trend. The dominant bacterial phyla detected wereProteobacteria,Acidobacteria, andActinobacteriain each afforested and FL sites. These data revealed significant correlations between soil aggregate characteristics, such as SOC content, mean weight diameter (MWD), and geometric mean diameter (GMD), with the relative abundance ofProteobacteria,Actinobacteria,Acidobacteria,Chloroflexi,Gemmatimonadetes,Nitrospirae,Verrucomicrobia, andPlanctomycetes. These relationships suggested that the effects of afforestation on SOC stabilization in soil aggregates are modulated by both soil aggregate size and also soil bacterial diversity. We demonstrate that the interaction between soil aggregate size and soil microbes might be a key factor in effective soil conservation, restoration, sustainability of agroecosystems, and erosion prevention.
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影响因子：
2.8
作者：
S. E. Obalum;M. Obi
通讯作者：
S. E. Obalum;M. Obi
影响因子：
5.2
作者：
Krüger C;Kohout P;Janoušková M;Püschel D;Frouz J;Rydlová J
通讯作者：
Rydlová J
影响因子：
6.1
作者：
Jun-yu Xie;Miao-miao Hou;Yingtian Zhou;Renjie Wang;Shulan Zhang;Xueyun Yang;B. Sun
通讯作者：
Jun-yu Xie;Miao-miao Hou;Yingtian Zhou;Renjie Wang;Shulan Zhang;Xueyun Yang;B. Sun
DOI：
10.1038/ismej.2012.8
发表时间：
2012-08
期刊：
The ISME journal
影响因子：
--
作者：
通讯作者：
--
影响因子：
4.8
作者：
Blaud, A.;Lerch, T. Z.;Brauman, A.
通讯作者：
Brauman, A.