干旱区生态环境知识资源中心(Arid): Fencing decreases microbial diversity but increases abundance in grassland soils on the Tibetan Plateau

Arid

DOI	10.1002/ldr.3626
	Fencing decreases microbial diversity but increases abundance in grassland soils on the Tibetan Plateau
	Fan, Dandan 1,2,3; Kong, Weidong 1,2,4; Wang, Fei 1,2; Yue, Linyan 1,2; Li, Xiangzhen 3,5,6
通讯作者	Kong, Weidong
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2020
卷号	31 期号:17 页码:2577-2590
英文摘要	Fencing usually increases soil organic carbon and nutrients and eventually enhances soil microbial diversity; however with different or even conflicting results, the mechanisms underlying the diversity reduction remain unclear. Aiming to reveal the mechanism of diversity reduction, we explored the soil microbial diversity and community structure in fenced areas (5-and 10-years enclosure) and grazing during a growing season in arid and semiarid steppe, using Illumina sequencing of 16S and 18S rRNA genes. The results revealed that fencing and season both substantially increased soil total organic carbon (TOC), while the enhancing TOC substantially reduced soil pH. Fencing significantly increased soil bacterial and eukaryotic abundance due to the enhancing TOC, which was indicated by positive correlation (p < .05). Contrastingly, fencing significantly decreased soil bacterial and eukaryotic diversity. Our results further revealed that fencing- and season-driven change in soil water content and soil pH played key roles in reducing the bacterial and eukaryotic diversity, respectively. Distance-based linear model demonstrated that fencing dominantly drove the soil bacterial and eukaryotic community variations by explaining 15.64 and 24.88%, respectively, and redundancy analysis showed that the fencing effect was dependent on growing months. Bacteria were dominated by Cyanobacteria and Proteobacteria, and eukaryotes were dominated by Streptophyta, Ascomycota and Basidiomycota. Cyanobacteria relative abundance remained stable from May to September in fencing but substantially increased in grazing. Our findings offer a new insight into the mechanism of the soil microbial diversity reduction, and reveal the season-dependency of fencing effect in arid and semiarid grasslands.
英文关键词	arid and semiarid fencing grassland soil microbial diversity Tibetan Plateau
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000536480700001
WOS关键词	TERM GRAZING EXCLUSION ; BACTERIAL COMMUNITY STRUCTURE ; RNA GENE DATABASE ; CARBON SEQUESTRATION ; FUNGAL COMMUNITY ; INNER-MONGOLIA ; CLIMATE-CHANGE ; PLANT DIVERSITY ; DESERT STEPPE ; PH
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
来源机构	中国科学院青藏高原研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319202
作者单位	1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Bldg 3,Courtyard 16,Lincui Rd, Beijing 100101, Peoples R China; 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China; 3.Fujian Agr & Forestry Univ, Fujian Univ Engn Ctr Soil Remediat, Coll Resources & Environm, Fuzhou, Peoples R China; 4.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China; 5.Chinese Acad Sci, Key Lab Environm & Appl Microbiol, Chengdu, Peoples R China; 6.Chinese Acad Sci, Chengdu Inst Biol, Environm Microbiol Key Lab Sichuan Prov, Chengdu, Peoples R China
推荐引用方式 GB/T 7714	Fan, Dandan,Kong, Weidong,Wang, Fei,et al. Fencing decreases microbial diversity but increases abundance in grassland soils on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2020,31(17):2577-2590.
APA	Fan, Dandan,Kong, Weidong,Wang, Fei,Yue, Linyan,&Li, Xiangzhen.(2020).Fencing decreases microbial diversity but increases abundance in grassland soils on the Tibetan Plateau.LAND DEGRADATION & DEVELOPMENT,31(17),2577-2590.
MLA	Fan, Dandan,et al."Fencing decreases microbial diversity but increases abundance in grassland soils on the Tibetan Plateau".LAND DEGRADATION & DEVELOPMENT 31.17(2020):2577-2590.