globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12065
论文题名:
Responses of the functional structure of soil microbial community to livestock grazing in the Tibetan alpine grassland
作者: Yang Y.; Wu L.; Lin Q.; Yuan M.; Xu D.; Yu H.; Hu Y.; Duan J.; Li X.; He Z.; Xue K.; van Nostrand J.; Wang S.; Zhou J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期:2
起始页码: 637
结束页码: 648
语种: 英语
英文关键词: Climate change ; Gene diversity ; Microbial community ; Summer grazing ; Tibetan alpine grassland
Scopus关键词: biogeochemical cycle ; carbon cycle ; climate change ; community structure ; global warming ; grassland ; livestock farming ; microbial community ; mineralization ; nitrification ; nitrogen cycle ; soil carbon ; soil microorganism ; soil nitrogen ; animal ; article ; China ; livestock ; microbiology ; physiology ; Poaceae ; Animals ; Livestock ; Poaceae ; Soil Microbiology ; Tibet ; China ; Qinghai-Xizang Plateau
英文摘要: Microbes play key roles in various biogeochemical processes, including carbon (C) and nitrogen (N) cycling. However, changes of microbial community at the functional gene level by livestock grazing, which is a global land-use activity, remain unclear. Here we use a functional gene array, GeoChip 4.0, to examine the effects of free livestock grazing on the microbial community at an experimental site of Tibet, a region known to be very sensitive to anthropogenic perturbation and global warming. Our results showed that grazing changed microbial community functional structure, in addition to aboveground vegetation and soil geochemical properties. Further statistical tests showed that microbial community functional structures were closely correlated with environmental variables, and variations in microbial community functional structures were mainly controlled by aboveground vegetation, soil C/N ratio, and NH4 +-N. In-depth examination of N cycling genes showed that abundances of N mineralization and nitrification genes were increased at grazed sites, but denitrification and N-reduction genes were decreased, suggesting that functional potentials of relevant bioprocesses were changed. Meanwhile, abundances of genes involved in methane cycling, C fixation, and degradation were decreased, which might be caused by vegetation removal and hence decrease in litter accumulation at grazed sites. In contrast, abundances of virulence, stress, and antibiotics resistance genes were increased because of the presence of livestock. In conclusion, these results indicated that soil microbial community functional structure was very sensitive to the impact of livestock grazing and revealed microbial functional potentials in regulating soil N and C cycling, supporting the necessity to include microbial components in evaluating the consequence of land-use and/or climate changes. © 2012 Blackwell Publishing Ltd.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62546
Appears in Collections:影响、适应和脆弱性

Files in This Item:

There are no files associated with this item.


作者单位: State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; Laboratory of Alpine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; Key Laboratory of Adaption and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810008, China; Institute for Environmental Genomics, Department of Botany and Microbiology, University of Oklahoma, Norman, OK, 73019, United States; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China; College of Resource and Environment Engineering, Liaoning Technical University, Buxin, Liaoning, 123000, China; Shapotou Desert Experiment and Research Station, Cold and Arid Regions and Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, 730000, China; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China; Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, United States

Recommended Citation:
Yang Y.,Wu L.,Lin Q.,et al. Responses of the functional structure of soil microbial community to livestock grazing in the Tibetan alpine grassland[J]. Global Change Biology,2013-01-01,19(2)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Yang Y.]'s Articles
[Wu L.]'s Articles
[Lin Q.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Yang Y.]'s Articles
[Wu L.]'s Articles
[Lin Q.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Yang Y.]‘s Articles
[Wu L.]‘s Articles
[Lin Q.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.