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首页> 外文期刊>Journal of soils & sediments >Edaphic variables influence soil bacterial structure under successive fertilization of Paulownia plantation substituting native vegetation
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Edaphic variables influence soil bacterial structure under successive fertilization of Paulownia plantation substituting native vegetation

机译：代映变量影响泡桐种植园替代本地植物的龙舌兰施肥下的土壤细菌结构

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摘要

Purpose Paulownia is the fastest-growing timber species all over the world which depended on exogenous nutrient input and scattered in the subtropical region of China. Practical experience proved that balanced fertilization can provide a rational nutrition supply for Paulownia cultivation by affecting soil microorganisms. However, there have been no rigorous studies on the effects of fertilization and edaphic variables on soil community structure and functions of Paulownia plantation in the subtropical region. Materials and methods We conducted a field plot experiment with four fertilization length levels of Paulownia plantation (abbreviated as 1-, 3-, 10-, and 13-yr) and a nearby native evergreen broadleaf forest (abbreviated as reference forest) to study the effects of the different fertilization lengths between them on soil bacterial community and the relationship with edaphic variables based on high-throughput sequencing and redundancy analysis. Results The results showed soil organic carbon, macronutrients, and boron in plantation were significantly higher than that in the reference forest, while fertilization treatments significantly increased Shannon and Heip indexes by up to 14.37 and 75%, respectively. Chloroflexi and Nitrospiare relative abundance in the Paulownia plantation was significantly lower than in the reference forest, which implied that fertilization treatment significantly promote nitrogen transformation processes, whereas Firmicutes showed the opposite trend. Soil organic carbon, nitrate-nitrogen, total potassium, and available boron are the key factors affecting bacterial communities as confirmed by Spearman's correlation analysis and redundancy analysis. Conclusions Our study stressed that fertilization duration is the main driving force for the improvement of bacterial community diversity and nitrogen cycling function, and major achieved by affecting edaphic variables.
机译：目的是泡桐是全球增长最快的木材物种，依赖于中国亚热带地区的外源性营养投入和分散。实践经验证明，通过影响土壤微生物，均衡施肥可以为泡桐培养提供合理的营养供应。然而，没有严格研究施肥和助剂变量对亚热带地区泡桐种植园土壤群落结构和功能的影响。我们的材料和方法我们进行了泡桐种植园的四个施肥长度水平的场绘图实验（缩写为1-，3-，10-和13 yr）和附近的常绿阔叶林（缩写为参考森林）来研究它们在土壤细菌群落中不同施肥长度的影响及基于高通量测序和冗余分析的关系与辅助变量的关系。结果结果表明，种植园中的土壤有机碳，常量和硼显着高于参考森林，而受精处理分别显着增加了Shannon和Heip指标分别高达14.37％和75％。氯昔洛列和氮素种植园中的相对丰度显着低于参考森林，这暗示施肥治疗显着促进氮转化过程，而对趋势表现出相反的趋势。土壤有机碳，硝酸盐 - 氮，总钾和可获得的硼是影响细菌社区的关键因素，由Spearman的相关性分析和冗余分析确认。结论我们的研究强调，施肥持续时间是改善细菌群落多样性和氮循环功能的主要动力，以及通过影响助剂变量实现的主要趋势。

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  • 来源
    《Journal of soils & sediments》 |2021年第8期|2922-2937|共16页
  • 作者

    Liu Sen; Li Peng; Van Zwieten Lukas; Tu Jia; Gan Weixiang; Lu Sheng; Wang Hailong; Wu Lichao;

  • 作者单位

    Cent South Univ Forestry & Technol Coll Forestry Key Lab Soil & Water Conservat & Desertificat Com Changsha 410004 Hunan Peoples R China;

    Guangxi Zhuang Autonomous Reg Forestry Res Inst Yongwu Rd 23 Nanning 530002 Guangxi Peoples R China;

    New South Wales Dept Primary Ind 1243 Bruxner Highway 10 Wollongbar NSW 2477 Australia;

    Hunan Acad Forestry Changsha 410004 Hunan Peoples R China;

    Cent South Univ Forestry & Technol Coll Forestry Key Lab Soil & Water Conservat & Desertificat Com Changsha 410004 Hunan Peoples R China;

    Cent South Univ Forestry & Technol Coll Forestry Key Lab Soil & Water Conservat & Desertificat Com Changsha 410004 Hunan Peoples R China;

    Foshan Univ Sch Environm & Chem Engn Foshan 528000 Guangdong Peoples R China;

    Cent South Univ Forestry & Technol Coll Forestry Key Lab Soil & Water Conservat & Desertificat Com Changsha 410004 Hunan Peoples R China|Guangxi Zhuang Autonomous Reg Forestry Res Inst Yongwu Rd 23 Nanning 530002 Guangxi Peoples R China|Cent South Univ Forestry & Technol Key Lab Cultivat & Protect Nonwood Forest Trees Minist Educ Changsha 410004 Hunan Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Soil fertility; Chloroflexi; High-throughput sequencing; Redundancy analysis; Nitrospiare; Shannon index;

    机译：土壤肥力;氯结构;高通量测序;冗余分析;氮素;香农指数;

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