热门
Responses of the functional structure of soil microbial community to livestock grazing in the Tibetan alpine grassland
文献类型：期刊论文
| 作者 | Yang, Yunfeng1; Wu, Linwei1; Lin, Qiaoyan2,3; Yuan, Mengting1; Xu, Depeng1; Yu, Hao4,5,6,7; Hu, Yigang3,8; Duan, Jichuang3; Li, Xiangzhen9; He, Zhili4,5 |
| 刊名 | global change biology
 |
| 出版日期 | 2013-02-01 |
| 卷号 | 19期号:2页码:637-648 |
| 关键词 | climate change gene diversity microbial community summer grazing Tibetan alpine grassland |
| ISSN号 | 1354-1013 |
| 通讯作者 | yang, yf (reprint author), tsinghua univ, sch environm, state key joint lab environm simulat & pollut con, beijing 100084, peoples r china. |
| 中文摘要 | 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. |
| 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. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 类目[WOS] | biodiversity conservation ; ecology ; environmental sciences |
| 研究领域[WOS] | biodiversity & conservation ; environmental sciences & ecology |
| 关键词[WOS] | 16s ribosomal-rna ; sea oil plume ; nitrous-oxide ; land-use ; vegetation dynamics ; ecosystem function ; inner-mongolia ; diversity ; biodiversity ; plateau |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000314219200026 |
| 公开日期 | 2014-05-09 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/3965]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 作者单位 | 1.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China 3.Chinese Acad Sci, NW Inst Plateau Biol, Key Lab Adapt & Evolut Plateau Biota, Xining 810008, Peoples R China 4.Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA 5.Univ Oklahoma, Dept Bot & Microbiol, Norman, OK 73019 USA 6.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China 7.Liaoning Tech Univ, Coll Resource & Environm Engn, Buxin 123000, Liaoning, Peoples R China 8.Chinese Acad Sci Lanzhou, Shapotou Desert Expt & Res Stn, Cold & Arid Reg & Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 9.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China 10.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA |
| 推荐引用方式 GB/T 7714 | Yang, Yunfeng,Wu, Linwei,Lin, Qiaoyan,et al. Responses of the functional structure of soil microbial community to livestock grazing in the Tibetan alpine grassland[J]. global change biology,2013,19(2):637-648. |
| APA | Yang, Yunfeng.,Wu, Linwei.,Lin, Qiaoyan.,Yuan, Mengting.,Xu, Depeng.,...&Zhou, Jizhong.(2013).Responses of the functional structure of soil microbial community to livestock grazing in the Tibetan alpine grassland.global change biology,19(2),637-648. |
| MLA | Yang, Yunfeng,et al."Responses of the functional structure of soil microbial community to livestock grazing in the Tibetan alpine grassland".global change biology 19.2(2013):637-648. |
入库方式： OAI收割
来源：西北高原生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。