您好，欢迎访问江苏省农业科学院 机构知识库！
江苏省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Biochar reduced soil nitrous oxide emissions through suppressing fungal denitrification and affecting fungal community assembly in a subtropical tea plantation

文献类型： 外文期刊

作者： Ji, Cheng 1 ; Han, Zhaoqiang 2 ; Zheng, Fengwei 2 ; Wu, Shuang 2 ; Wang, Jinyang 2 ; Wang, Jidong 1 ; Zhang, Hui 1 ; Zhang, Yongchun 1 ; Liu, Shuwei 2 ; Li, Shuqing 2 ; Zou, Jianwen 2 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Resources & Environm, Nanjing 210014, Peoples R China

2.Nanjing Agr Univ, Coll Resources & Environm Sci, Jiangsu Key Lab Low Carbon Agr & GHGs Mitigat, Nanjing 210095, Peoples R China

3.Nanjing Agr Univ, Engn Ctr Solid Organ Waste Utilizat, Jiangsu Collaborat Innovat Ctr Solid Organ Waste R, Jiangsu Key Lab, Nanjing 210095, Peoples R China

关键词： Biochar; Acidic soil; Nitrous oxide; Fungal denitrification; Fungal community

期刊名称：AGRICULTURE ECOSYSTEMS & ENVIRONMENT （ 影响因子：6.576； 五年影响因子：7.088 ）

ISSN： 0167-8809

年卷期： 2022 年 326 卷

页码：

收录情况： SCI

摘要： Biochar amendment has been shown to reduce nitrous oxide (N2O) emissions from acidic soils in tea plantations. Given that both soil bacterial and fungal denitrifications can produce N2O, their relative contributions to the decrease in N2O emissions following biochar amendment remain unclear. Here, we examined soils sampled from a subtropical tea plantation that had received 2 years of biochar amendment. Measurements of the relative contributions of fungi and bacteria to N2O production were taken by the substrate-induced respiration method implemented with the addition of selective inhibitors. The abundances of total fungi, bacteria, and key N2O-related bacterial genes were quantified by q-PCR, and the composition of the fungal community was analyzed by 18S rRNA amplicon sequencing. The results showed that the contribution of fungi toN(2)O production (52%) was greater than that of bacteria (18%) for the N-applied acidic soils. Biochar amendment significantly decreased the fungal abundances and the fungal contribution to N2O production (by 28%). In contrast, biochar amendment significantly increased the abundances of N2O-related bacteria (e.g., ammonia-oxidizing bacteria (AOB), nirS, nosZ). Structural equation models (SEMs) revealed that biochar decreased the fungal contribution to N2O production through enhancing the soil pH and shifting the fungal community composition. Our results highlight that the decreased N2O & nbsp;emissions could be ascribed to the stimulated N2O consumption process (driven by N2O-consuming bacteria encoded by the nosZ gene) and suppressed fungal dominance in acidic soils from tea plantations. This study presents relatively comprehensive insights into the regulatory roles of biochar on soil microbe mediated N2O production processes.& nbsp;& nbsp;

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：江苏省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台