均腐土不同亚纲典型土系土壤细菌群落多样性研究
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(1.黑龙江八一农垦大学,黑龙江 大庆 163319;2.中国科学院东北地理与农业生态研究所,黑土农业生态重点实验室,黑龙江 哈尔滨 150081)

作者简介:

焦峰(1980-),男,黑龙江兰西人,副教授,博士,主要从事土壤肥力和作物营养生理研究。E-mail:jiaofeng1980@163.com。

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基金项目:黑龙江省自然科学基金项目(D2018005)。


Diversity of soil bacterial community in typical Isohumisols with different soil series
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(1.Heilongjiang Bayi AgriculturalUniversity,Daqing Heilongjiang163319;2.Key laboratory of Mollosols Agroecology,Northeast Institute of Geographyand Agroecology,China Academy ofSciences,Har bin Hei long jiang 150081)

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    摘要:

    为研究中国土壤系统分类(CST)体系下均腐土不同亚纲土壤细菌群落结构的多样性,以 4个干润均腐土[富牧西系(DFm)、春雷南系(DCl)、保国系(DBg)、明水系(DMs)]和 4个湿润均腐土[大西江系(MDx)、新发北系(MXf)、卫星农场系(MWx)、裴德系(MPd)]的腐殖质层(Ah层)为研究对象,采用高通量测序技术研究细菌群落多样性,分析细菌群落结构与环境因子间的关系,以探讨影响均腐土不同亚纲群落结构的主要环境因子。结果表明:均腐土 8个土系样品共获得 1 674 634条基因序列,Shannon指数和 Chao1指数表现为:干润均腐土 >湿润均腐土。均腐土 8个土系细菌群落主要包括 10个门类,其中变形菌门(Proteobacteria)、放线菌门(Actinobacteria)、酸杆菌门(Acidobacteria)为富牧西系、春雷南系、保国系、大西江系、新发北系、卫星农场系、裴德系优势菌门,明水系以绿湾菌门(Chloroflexi)、变形菌门(Proteobacteria)、放线菌门(Actinobacteria)为优势菌门;属水平上,均腐土各土系的群落差异较大。样品热图分析将 8个土系细菌群落聚为 2类,其中干润均腐土聚为一类,湿润均腐土聚为一类。pH、交换性 Ca、CEC、交换性 Mg、SOC和 TP是影响均腐土细菌群落结构发生变化的主要因子( P<0.05)。此外,RDA分析发现,土壤 pH为影响均腐土细菌群落结构的主导因子,而 pH、交换性 Ca、CEC为驱动干润均腐土细菌群落结构发生变化的主要影响因素,交换性 Mg、SOC、TP为驱动湿润均腐土细菌群落发生变化的主要影响因素。

    Abstract:

    In order to study the diversity of Isohumisols bacterial community structure in different subclass of the Chinese soilsystem classification(CST)system,the humus layer(Ah)of the 4 Dry Isohumisols[Fumuxi Series(DFm),ChunleinanSeries(DCl),Baoguo Series(DBg),Mingshui Series(DMs)]and 4 Moist Isohumisols[Daxijiang Series(MDx),XinfabeiSeries(MXf),WeixingnongchangSeries(MWx),PeideSeries(MPd)]were used as the research objects. The high-throughput sequencing technology was used to study the diversity of bacterialcommunities,and the relationship betweenbacterial community structure and environmental factors was analyzed to explore the main environmental factors affecting the different sub-family community structures of homogeneous mulch. The results showed that the 1 674 634 gene sequences wereobtained from the Isohumisols. The Shannon and Chao1 indexes showedas:Dry Isohumisols>Mosit Isohumisols. In thisstudy,the 8 soil series of Isohumisols was mainly comprised of 10 phylum. The dominant bacterial phylum were theProteobacteria,Actinobacteria and Acidobacteria in FumuxiSeries,ChunleinanSeries,BaoguoSeries,DaxijiangSeries,XinfabeiSeries,WeixingnongchangSeries,Peide Series. TheChloroflexi,Proteobacteria,and Actinobacteria were the dominant populationsin Mingshui Series. At the genus level,the composition of Isohumisols bacterial communities was different from each other.According to the sample heat mapanalysis,the bacterial communities of 8 soil systems were grouped into 2groups,the DryIsohumisols was grouped into 1 group,and the Moist Isohumisols was grouped into 1 group. pH,EX -Ca,CEC,EX -Mg,SOC and TP were the main factors affecting the changes of bacterial community structure in theIsohumisols( P<0.05). Inaddition,the RDA analysis found that soil pH was the leading factor affecting the community structure ofIsohumisoils,whilepH,EX-Ca and CEC were the main factors driving the change of the bacterial community structure of DryIsohumisols,and EX-Mg,SOC and TP were the main factors driving the change of the bacterial community of Moist Isohumisols.

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焦峰,吕淑敏,唐雷,张东萌,王光华.均腐土不同亚纲典型土系土壤细菌群落多样性研究[J].中国土壤与肥料,2020,(6):154-162.

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  • 收稿日期:2019-10-23
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  • 录用日期:2020-03-25
  • 在线发布日期: 2021-01-21