Long-term regional evidence of the effects of livestock grazing on soil microbial community structure and functions in surface and deep soil layers

doi:10.1016/j.soilbio.2022.108629

	Long-term regional evidence of the effects of livestock grazing on soil microbial community structure and functions in surface and deep soil layers
	Wu, Ying 1; Chen, Dima 2; Delgado-Baquerizo, Manuel ; Liu, Shengen ; Wang, Bing ; Wu, Jianping 1; Hu, Shuijin 5; Bai, Yongfei2,6
	2022
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
卷号	168
摘要	Grazing by livestock can affect plant biodiversity and topsoil functions. However, experimental evidence on whether these impacts are limited to the topsoil or penetrate into deep layers (via changes in soil environment and resource locations) of soil is lacking, especially for soil microbial biomass and diversity. Here, we used paired grazed and ungrazed (fenced) plots at 10 locations across the Mongolian Plateau to investigate how long-term (>10 years) livestock grazing affects the biomass, diversity, composition, and function of microbial communities in surface (0-20 cm) and deep soil layers (40-60 cm). Livestock grazing increased bacterial diversity by 5-9% in both soil layers but increased fungal diversity by 10% only in the topsoil. Livestock grazing also strongly altered bacterial and fungal community composition in both soil layers. Livestock grazing decreased soil C mineralization rates by 11-25% in both soil layers, and decreased soil N mineralization rates by 16% and bacterial biomass by 20% only in the topsoil. The grazing-induced increase in microbial diversity in both soil layers was mainly explained by the changes in plant C:N ratio and plant biomass rather than by soil abiotic variables, especially for the deep soil layer. The grazing-induced negative effects on ecosystem functions (soil C and N mineralization) were mainly associated with soil abiotic variables together with plant variables or microbial diversity in the surface soil layer and were mainly associated with plant variables and soil microbial diversity in the deep soil layer. Overall, our regional field experiment provides the first evidence that the strong effects of livestock grazing on soil microbial biomass, diversity, composition, and function can penetrate the deep soil in arid and semi-arid grasslands. This knowledge suggests that models should consider the dynamic interactions between land use and both soil microbial diversity and biomass across soil depths in global drylands.
关键词	Depth profile Drylands Ecosystem functions Microbial community structure Microbial diversity Plant -soil (below-ground) interactions Soil mineralization Livestock grazing
学科领域	Soil Science
DOI	10.1016/j.soilbio.2022.108629
收录类别	SCI
语种	英语
WOS关键词	BACTERIAL COMMUNITIES ; ORGANIC-MATTER ; CARBON ; DIVERSITY ; EXCLUSION ; FUNGAL ; PLANT ; ECOSYSTEMS ; RESPONSES ; PATTERNS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000793635400001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
文献子类	Article
出版地	OXFORD
EISSN	1879-3428
资助机构	National Natural Science Foundation of China [31570450, 31630010] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences [2015061] ; Ramon y Cajal grant from the Spanish Ministry of Science and Innovation [RYC2018-025483-I] ; BES grant agreement [LRB17\1019]
作者邮箱	chendima@ctgu.edu.cn ; yfbai@ibcas.ac.cn
作品OA属性	Green Submitted
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/29031
专题	植被与环境变化国家重点实验室
作者单位	1.China Three Gorges Univ, Engn Res Ctr Ecoenvironm Three Gorges Reservoir R, Minist Educ, Yichang, Peoples R China 2.Yunnan Univ, Key Lab Soil Ecol & Hlth Univ Yunnan Prov, Sch Ecol & Environm Sci, Kunming, Yunnan, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 4.CSIC, Lab Biodiversidad & Funcionamiento Ecosistem, Inst Recursos Nat & Agrobiol Sevilla IRNAS, Av Reina Mercedes 10, E-41012 Seville, Spain 5.Univ Pablo de Olavide, Unidad Asociada CSIC UPO BioFun, Seville 41013, Spain 6.North Carolina State Univ, Dept Plant Pathol, Raleigh, NC USA 7.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wu, Ying,Chen, Dima,Delgado-Baquerizo, Manuel,et al. Long-term regional evidence of the effects of livestock grazing on soil microbial community structure and functions in surface and deep soil layers[J]. SOIL BIOLOGY & BIOCHEMISTRY,2022,168.
APA	Wu, Ying.,Chen, Dima.,Delgado-Baquerizo, Manuel.,Liu, Shengen.,Wang, Bing.,...&Bai, Yongfei.(2022).Long-term regional evidence of the effects of livestock grazing on soil microbial community structure and functions in surface and deep soil layers.SOIL BIOLOGY & BIOCHEMISTRY,168.
MLA	Wu, Ying,et al."Long-term regional evidence of the effects of livestock grazing on soil microbial community structure and functions in surface and deep soil layers".SOIL BIOLOGY & BIOCHEMISTRY 168(2022).

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