气候变化领域集成服务门户(CCPortal): Contrasting soil microbial community functional structures in two major landscapes of the Tibetan alpine meadow

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DOI	10.1002/mbo3.190
	Contrasting soil microbial community functional structures in two major landscapes of the Tibetan alpine meadow
	Chu, Houjuan; Wang, Shiping; Yue, Haowei; Lin, Qiaoyan; Hu, Yigang; Li, Xiangzhen; Zhou, Jizhong; Yang, Yunfeng
通讯作者	Yang, YF (通讯作者)
发表日期	2014
ISSN	2045-8827
起始页码	585
结束页码	594
卷号	3 期号:5
英文摘要	The grassland and shrubland are two major landscapes of the Tibetan alpine meadow, a region very sensitive to the impact of global warming and anthropogenic perturbation. Herein, we report a study showing that a majority of differences in soil microbial community functional structures, measured by a functional gene array named GeoChip 4.0, in two adjacent shrubland and grassland areas, were explainable by environmental properties, suggesting that the harsh environments in the alpine grassland rendered niche adaptation important. Furthermore, genes involved in labile carbon degradation were more abundant in the shrubland than those of the grassland but genes involved in recalcitrant carbon degradation were less abundant, which was conducive to long-term carbon storage and sequestration in the shrubland despite low soil organic carbon content. In addition, genes of anerobic nitrogen cycling processes such as denitrification and dissimilatory nitrogen reduction were more abundant, shifting soil nitrogen cycling toward ammonium biosynthesis and consequently leading to higher soil ammonium contents. We also noted higher abundances of stress genes responsive to nitrogen limitation and oxygen limitation, which might be attributed to low total nitrogen and higher water contents in the shrubland. Together, these results provide mechanistic knowledge about microbial linkages to soil carbon and nitrogen storage and potential consequences of vegetation shifts in the Tibetan alpine meadow.
关键词	AGRICULTURAL MANAGEMENT ENVIRONMENTAL-SAMPLES ORGANIC-CARBON PLATEAU GRASSLAND NITROGEN VEGETATION ECOSYSTEM CLIMATE DENITRIFICATION
英文关键词	Alpine grassland; GeoChip; soil microbial community; Tibetan plateau
语种	英语
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:000343761600001
来源期刊	MICROBIOLOGYOPEN
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258400
推荐引用方式 GB/T 7714	Chu, Houjuan,Wang, Shiping,Yue, Haowei,et al. Contrasting soil microbial community functional structures in two major landscapes of the Tibetan alpine meadow[J]. 中国科学院青藏高原研究所,2014,3(5).
APA	Chu, Houjuan.,Wang, Shiping.,Yue, Haowei.,Lin, Qiaoyan.,Hu, Yigang.,...&Yang, Yunfeng.(2014).Contrasting soil microbial community functional structures in two major landscapes of the Tibetan alpine meadow.MICROBIOLOGYOPEN,3(5).
MLA	Chu, Houjuan,et al."Contrasting soil microbial community functional structures in two major landscapes of the Tibetan alpine meadow".MICROBIOLOGYOPEN 3.5(2014).