您好，欢迎访问中国农业科学院 机构知识库！

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Taxonomic turnover dominates changes in soil microbial communities and functions in response to wildfire in subtropical forest

文献类型： 外文期刊

作者： Shi, Ziyue 1 ; Chen, Yaru 1 ; Li, Aogui 1 ; Wang, Chao 1 ; Hu, Mengjun 3 ; Liu, Weixing 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arid & Semiarid A, Hulunber Grassland Ecosyst Natl Observat & Res Stn, Beijing 100081, Peoples R China

2.Hebei Univ, Coll Life Sci, Baoding 071002, Peoples R China

3.Hubei Univ Sci & Technol, Coll Resources & Environm Sci & Engn, Xianning 437000, Peoples R China

关键词： Bacteria; Burning; Community dissimilarity; Ecological processes; Functional shift; Fungi

期刊名称：APPLIED SOIL ECOLOGY （ 影响因子：4.8； 五年影响因子：4.9 ）

ISSN： 0929-1393

年卷期： 2024 年 202 卷

页码：

收录情况： SCI

摘要： Wildfire is a key disturbance factor driving biodiversity and structure of forest ecosystems. Despite wildfire shaping soil microbial communities, the underlying mechanisms remain poorly understood. Here, we assessed soil microbial community dissimilarity in response to wildfire and quantified the contribution of taxonomic turnover and nestedness to reorganization of soil microbial communities in a subtropical forest in China. We further subdivided taxonomic turnover into homogeneous (R sim-homo ) and heterogeneous (R sim-hete ) based on turnover within/between functional groups. Results showed that reduced microbial richness and changed community structure after wildfire were predominantly driven by taxonomic turnover with equal contributions of R sim-homo and R sim-hete . Carbon cycle-related bacteria dominated R sim-homo , and the shift between carbon cycle- related and pathogenic bacteria dominated R sim-hete . Additionally, R sim-homo mainly occurred within saprotrophic fungi, while R sim-hete mainly occurred between symbiotrophic and saprotrophic fungi, manifesting a reduction in symbiotroph but stimulation of saprotroph. Generalized dissimilarity modeling (GDM) revealed that bacterial turnover was predicted by soil temperature and inorganic nitrogen while fungal turnover was predicted by soil temperature and carbon to nitrogen ratio. Our findings highlight the importance of taxonomic turnover in reorganizing post-fire soil microbial communities and functions, advancing our understanding of ecological processes and mechanisms of microbial responses to disturbance.

  • 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：中国农业科学院

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