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	VARIATIONS IN THE CULTIVABLE SOIL NITROGEN-CYCLING BACTERIAL COMMUNITY ALONG THE ALTITUDE GRADIENT AT THE UPPER REACHES OF THE HEIHE RIVER, NORTHWESTERN CHINA
	Tai, Xisheng; Mao, Wenliang; Yang, Ruiqi; Sun, Likun; Long, Haozhi; Sun, Haili; Li, Changming
通讯作者	Tai, XS (通讯作者)，Lanzhou City Univ, Coll Geog & Environm Engn, Dept Environm Engn, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2021
ISSN	1018-4619
EISSN	1610-2304
起始页码	1608
结束页码	1619
卷号	30 期号:2A
英文摘要	The upper reaches of the Heihe River, located in the Qilian Mountains on the eastern edge of the Qinghai-Tibet Plateau. Although there are many reports on the hydrology and vegetation of the region, there is little information about the distribution of soil microbe communities. In this study, soil samples were collected from the upper reaches of the Heihe River along an altitude gradient of 2814-4130 m above sea level. We investigated bacteria targeting three key processes of the nitrogen cycle, including nitrite oxidation, aerobic denitrification and N-2 fixation. Population fluctuations of these nitrogen-cycling bacteria were significant along the altitude gradient (P < 0.05). N-2-fixing bacteria (NFB) were present in higher numbers than nitrite-oxidizing bacteria (NOB) and aerobic denitrifying bacteria (ADB). The isolates we obtained from the soil represented 48 species as assessed by sequencing PCR-amplified 16S rDNA. These species were affiliated with 13 genera belonging to alpha-Proteobacteria, beta-Proteobacteria, gamma-Proteobacteria, Actinobacteria, Bacteroides and Firmicutes. The dominant genera were Arthrobacter and Pseudomonas, while NFB was the predominant functional group in the soil samples. Statistical analysis showed that altitude and plant diversity were the principal environmental factors at the upper reaches of the Heihe River. Cultivable numbers of NOB, ADB and NFB were negatively correlated with altitude, and the diversity of NOB and ADB was primarily affected by altitude and plant diversity. However, the diversity of NFB was correlated with plant biomass and soil physicochemical properties (i.e., soil water content, organic material and total organic carbon).
关键词	NITRITE-OXIDIZING BACTERIA DINITROGEN-FIXING BACTERIA PSEUDOMONAS-STUTZERI DIVERSITY NITRATE DENITRIFICATION MICROORGANISMS NITRIFICATION PRODUCTIVITY RESPIRATION
英文关键词	Aerobic denitrifying bacteria; diversity; N-2-fixing bacteria; nitrite-oxidizing bacteria; vegetation
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000626629800004
来源期刊	FRESENIUS ENVIRONMENTAL BULLETIN
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/254330
作者单位	[Tai, Xisheng; Yang, Ruiqi; Sun, Haili; Li, Changming] Lanzhou City Univ, Coll Geog & Environm Engn, Dept Environm Engn, Lanzhou 730000, Gansu, Peoples R China; [Tai, Xisheng; Yang, Ruiqi; Sun, Likun; Long, Haozhi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Extreme Environm Microbial Resources & En, Lanzhou 730000, Gansu, Peoples R China; [Mao, Wenliang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China; [Sun, Likun] Gansu Agr Univ, Coll Anim Sci & Technol, Lanzhou 730000, Gansu, Peoples R China; [Long, Haozhi] Jiangxi Agr Univ, Coll Biosci & Bioengn, Nanchang 330045, Jiangxi, Peoples R China
推荐引用方式 GB/T 7714	Tai, Xisheng,Mao, Wenliang,Yang, Ruiqi,et al. VARIATIONS IN THE CULTIVABLE SOIL NITROGEN-CYCLING BACTERIAL COMMUNITY ALONG THE ALTITUDE GRADIENT AT THE UPPER REACHES OF THE HEIHE RIVER, NORTHWESTERN CHINA[J]. 中国科学院西北生态环境资源研究院,2021,30(2A).
APA	Tai, Xisheng.,Mao, Wenliang.,Yang, Ruiqi.,Sun, Likun.,Long, Haozhi.,...&Li, Changming.(2021).VARIATIONS IN THE CULTIVABLE SOIL NITROGEN-CYCLING BACTERIAL COMMUNITY ALONG THE ALTITUDE GRADIENT AT THE UPPER REACHES OF THE HEIHE RIVER, NORTHWESTERN CHINA.FRESENIUS ENVIRONMENTAL BULLETIN,30(2A).
MLA	Tai, Xisheng,et al."VARIATIONS IN THE CULTIVABLE SOIL NITROGEN-CYCLING BACTERIAL COMMUNITY ALONG THE ALTITUDE GRADIENT AT THE UPPER REACHES OF THE HEIHE RIVER, NORTHWESTERN CHINA".FRESENIUS ENVIRONMENTAL BULLETIN 30.2A(2021).