气候变化领域集成服务门户(CCPortal): Diversity and Variation of Asymbiotic Nitrogen-Fixing Microorganisms in Alpine Grasslands on the Tibetan Plateau

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DOI	10.3389/fevo.2021.702848
	Diversity and Variation of Asymbiotic Nitrogen-Fixing Microorganisms in Alpine Grasslands on the Tibetan Plateau
	Li, Wenyan; Li, Fei; Zeng, Haijun; Ma, Lin; Qi, Lingyan; Wang, Xiaochun; Wang, Wenyin; Peng, Zhen; Degen, A. Allan; Bai, Yanfu; Zhang, Tao; Huang, Mei; Han, Jin; Shang, Zhanhuan
通讯作者	Shang, ZH (通讯作者)，Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou, Peoples R China. ; Shang, ZH (通讯作者)，Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Restorat Ecol Cold Areas, Xining, Peoples R China. ; Shang, ZH (通讯作者)，Qinghai Univ, Qinghai Acad Anim & Vet Sci, Qinghai Prov Key Lab Adapt Management Alpine Gras, Xining, Peoples R China.
发表日期	2021
ISSN	2296-701X
卷号	9
英文摘要	Asymbiotic nitrogen-fixing (ANF) bacteria contribute a substantial amount of nitrogen in ecosystems, especially in those with low symbiotic nitrogen fixation (SNF) capability. Degradation of alpine grassland is widespread on the Tibetan Plateau and sown grassland has become one of the main strategies for grassland restoration. However, the diversity and community structure of ANF bacteria in different grassland types remain unknown. The aim of this study was to fill this gap. Soil samples were obtained from 39 grassland plots selected from three counties in the eastern Tibetan Plateau. The plots were classified as natural grassland (NG), sown grassland (SG), lightly degraded grassland (LDG), and severely degraded grassland (SDG). ANF microbial communities of the four grassland types were compared at the level of community and species diversity by 16S rRNA high-throughput sequencing technology. The phylum Proteobacteria accounted for >72% of the ANF bacteria. The community structures of soil ANF bacteria differed significantly (p < 0.01) among grassland types. We concluded that: (1) planting gramineous forage could possibly mitigate the decrease in diversity of soil ANF bacteria caused by grassland degradation; and (2) the diversity of soil ANF bacteria in alpine grassland of the Tibetan Plateau is closely related to grassland degradation and restoration.
关键词	MICROBIAL COMMUNITY N-2 FIXATION BACTERIA SOILS DIAZOTROPHICUS CLOSTRIDIA SYSTEM PH
英文关键词	asymbiotic nitrogen-fixing bacteria; alpine grassland; Tibetan Plateau; diversity; community structure
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000692749500001
来源期刊	FRONTIERS IN ECOLOGY AND EVOLUTION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254257
作者单位	[Li, Wenyan; Li, Fei; Zeng, Haijun; Ma, Lin; Qi, Lingyan; Wang, Xiaochun; Wang, Wenyin; Peng, Zhen; Bai, Yanfu; Zhang, Tao; Huang, Mei; Han, Jin; Shang, Zhanhuan] Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou, Peoples R China; [Degen, A. Allan] Ben Gurion Univ Negev, Blaustein Inst Desert Res, Wyler Dept Dryland Agr, Desert Anim Adaptat & Husb, Beer Sheva, Israel; [Shang, Zhanhuan] Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Restorat Ecol Cold Areas, Xining, Peoples R China; [Shang, Zhanhuan] Qinghai Univ, Qinghai Acad Anim & Vet Sci, Qinghai Prov Key Lab Adapt Management Alpine Gras, Xining, Peoples R China
推荐引用方式 GB/T 7714	Li, Wenyan,Li, Fei,Zeng, Haijun,et al. Diversity and Variation of Asymbiotic Nitrogen-Fixing Microorganisms in Alpine Grasslands on the Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,9.
APA	Li, Wenyan.,Li, Fei.,Zeng, Haijun.,Ma, Lin.,Qi, Lingyan.,...&Shang, Zhanhuan.(2021).Diversity and Variation of Asymbiotic Nitrogen-Fixing Microorganisms in Alpine Grasslands on the Tibetan Plateau.FRONTIERS IN ECOLOGY AND EVOLUTION,9.
MLA	Li, Wenyan,et al."Diversity and Variation of Asymbiotic Nitrogen-Fixing Microorganisms in Alpine Grasslands on the Tibetan Plateau".FRONTIERS IN ECOLOGY AND EVOLUTION 9(2021).