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

Effect of shrubs on soil microbial abundance and fungi-to-bacteria ratio depends on grazing conditions in semiarid grasslands

文献类型： 外文期刊

作者： Li, Le 1 ; Liu, Jiahui 1 ; Wang, Jinsong 2 ; Jin, Yunxiang 1 ; Sun, Yu 3 ; Zhang, Jingmin 1 ; Zhu, Na 1 ; Wang, Xu 1 ; Xu, Dawei 1 ; Luo, Yuhong 1 ; Bao, Yufan 1 ; Xu, Nuo 1 ; Zhu, Biao 4 ; Yan, Yuchun 1 ;

作者机构： 1.Chinese Acad Agr Sci, State Key Lab Efficient Utilizat Arable Land China, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China

3.Chinese Acad Sci, Northeast Inst Geog & Agroecol, State Key Lab Black Soils Conservat & Utilizat, Changchun 130102, Peoples R China

4.Peking Univ, Inst Ecol, Coll Urban & Environm Sci, Beijing 100871, Peoples R China

5.Peking Univ, Minist Educ, Coll Urban & Environm Sci, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China

关键词： Shrub; Grazing; Soil microbial abundance; Fungi-to-bacteria ratio; Shrub-encroached grasslands

期刊名称：PLANT AND SOIL （ 影响因子：4.1； 五年影响因子：4.7 ）

ISSN： 0032-079X

年卷期： 2025 年

页码：

收录情况： SCI

摘要： Background and aimsShrub expansion is widespread in global grasslands, with shrubs positively influencing soil microbial abundance compared to surrounding interspaces. However, how this effect varies under grazed and ungrazed treatments remains unclear.MethodsIn this study, we examined variations in plant and soil properties, as well as soil microbial abundance, between shrub patches (Caragana microphylla) and adjacent interspaces in paired grazed and ungrazed plots at three sites in semiarid grasslands on the Mongolian Plateau.ResultsOur results showed that shrubs significantly enhanced plant and soil functions, as reflected by increase in canopy height, plant cover, aboveground biomass and soil nutrient concentrations. However, the positive effect of shrubs on soil microbial abundance was observed only under grazed conditions, primarily mediated through aboveground biomass and soil nutrients. Although grazing reduced plant and soil functions, as well as soil microbial abundance, it amplified the relative advantages of shrubs. Notably, fungal abundance responded more strongly to shrubs than bacterial abundance under grazing, leading to a significantly higher fungi-to-bacteria ratio.ConclusionThese findings highlight the crucial role of shrubs in buffering grazing-induced environmental stress and provide new insights into shrubs' effects on plant and soil responses to human disturbances in semiarid grasslands.

  • 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