干旱区生态环境知识资源中心(Arid): Impact of long-term grazing exclusion on soil microbial community composition and nutrient availability

Arid

DOI	10.1007/s00374-018-01336-5
	Impact of long-term grazing exclusion on soil microbial community composition and nutrient availability
	Wang, Zhe 1,2; Zhang, Qian 3; Staley, Christopher 3; Gao, Hailong 1; Ishii, Satoshi 3,4; Wei, Xiaorong 1; Liu, Jian 1; Cheng, Jimin 1; Hao, Mingde 1; Sadowsky, Michael J.3,4
通讯作者	Wei, Xiaorong
来源期刊	BIOLOGY AND FERTILITY OF SOILS
ISSN	0178-2762
EISSN	1432-0789
出版年	2019
卷号	55 期号:2 页码:121-134
英文摘要	While grazing exclusion is thought to drive soil nutrient transport and cycling, and reduce soil compaction, its direct impact on microbial community composition remains unclear. In this study, we examined the impact of grazing exclusion on abundance and composition of soil microbial (bacterial, archaeal, and fungal) communities, especially those associated with nutrient cycling. We surveyed soil physicochemical properties and litter mass, at sites undergoing varying durations of grazing exclusion (0-34years) in a semiarid grassland. Using next-generation amplicon sequencing, we further characterized variations in the composition and diversity of soil microbial communities associated with grazing exclusion and soil depths, as well as subsequent changes in physicochemical properties. Most soil physicochemical parameter values significantly increased as the result of long-term grazing exclusion, and these properties were associated with variation in composition and diversity of microbial communities. Notably, the relative abundances of microbial families associated with C cycling (e.g., Chitinophagaceae) increased with an increase in nutrient availability following grazing exclusion. The abundance of the archaeal ammonia-oxidizing Nitrososphaerae increased with decreasing concentration of ammonium among samples. Likewise, fungal communities were also associated with the shifts in nutrient concentrations, although the majority of fungi could not be classified to the species level. Nitrate concentration also played a critical role in shaping bacterial, archaeal, or fungal communities. Moreover, bacterial and archaeal communities had a greater mean Shannon index in 0-10-cm than those in 10-20-cm soil layer. Results of this study provide novel insights regarding how the length of grazing exclusion and soil depth influence nutrient gradients and microbial community composition associated with nutrient cycling.
英文关键词	Bacteria Fungi Next-generation amplicon sequencing Soil nutrients Exclusion-grazing
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000456151400003
WOS关键词	AMMONIA-OXIDIZING BACTERIA ; FUNGAL COMMUNITIES ; SEMIARID STEPPES ; DESERT STEPPE ; GEN. NOV. ; PLANT ; VEGETATION ; DIVERSITY ; GRASSLANDS ; RESPONSES
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214646
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Univ Minnesota, BioTechnol Inst, St Paul, MN 55108 USA; 4.Univ Minnesota, Dept Soil Water & Climate, St Paul, MN 55108 USA
推荐引用方式 GB/T 7714	Wang, Zhe,Zhang, Qian,Staley, Christopher,et al. Impact of long-term grazing exclusion on soil microbial community composition and nutrient availability[J]. 西北农林科技大学,2019,55(2):121-134.
APA	Wang, Zhe.,Zhang, Qian.,Staley, Christopher.,Gao, Hailong.,Ishii, Satoshi.,...&Sadowsky, Michael J..(2019).Impact of long-term grazing exclusion on soil microbial community composition and nutrient availability.BIOLOGY AND FERTILITY OF SOILS,55(2),121-134.
MLA	Wang, Zhe,et al."Impact of long-term grazing exclusion on soil microbial community composition and nutrient availability".BIOLOGY AND FERTILITY OF SOILS 55.2(2019):121-134.