The counteractive effects of nitrogen addition and watering on soil bacterial communities in a steppe ecosystem

doi:10.1016/j.soilbio.2014.01.034

	The counteractive effects of nitrogen addition and watering on soil bacterial communities in a steppe ecosystem
	Zhang, Ximei ; Wei, Haiwei ; Chen, Quansheng 1; Han, Xingguo1
	2014
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
卷号	72 页码:26-34
摘要	In many grassland ecosystems, mowing, nitrogen (N) addition, and watering are carried out to improve plant productivity for the development of livestock husbandry. However, as a result of human activities, N deposition rate is predicted to increase and precipitation is Expected to change. These environmental changes affect biodiversity and ecosystem functioning, and most of the previous studies have primarily focused on their effects on macro-organisms, neglecting the responses of soil microbial communities. In this study, we examined the changes in three community attributes (abundance, richness, and composition) of the entire bacterial kingdom and 16 dominant bacterial phyla/classes in response to mowing, N addition, watering, and their combinations, by conducting a 5-year experiment in a steppe ecosystem in Inner Mongolia, China. Overall, various bacterial groups responded differentially to these experimental treatments, with Acidobacteria, Proteobacteria, Alphaproteobacteria, Deltaproteobacteria, and Gammaproteobacteria being the most sensitive. Furthermore, the treatments produced different effects, with N addition and watering having much greater effects than mowing. Addition of N primarily affected these bacterial groups by reducing soil pH, while watering affected the bacterial groups by elevating both soil water content and soil pH. As N addition and watering had contrasting effects on soil pH, they also produced counteractive effects on many bacterial groups. The counteractive effects of N addition and watering suggest that the combination of these two treatments or the concurrence of N deposition and increased precipitation may be helpful for the maintenance of soil bacterial diversity and their ecosystem functions. (C) 2014 Elsevier Ltd. All rights reserved.
关键词	Fertilization Precipitation Environmental change Microbial diversity Soil acidification Grassland
学科领域	Soil Science
DOI	10.1016/j.soilbio.2014.01.034
收录类别	SCI
语种	英语
WOS关键词	MICROBIAL COMMUNITIES ; DIVERSITY ; RESPONSES ; RESOURCE
WOS研究方向	Agriculture
WOS记录号	WOS:000334973700004
出版者	PERGAMON-ELSEVIER SCIENCE LTD
文献子类	Article
出版地	OXFORD
资助机构	National Natural Science Foundation [31300431, 31170433] ; Major International Joint Research Project of NSFC [41320104002] ; State Key Laboratory of Forest and Soil Ecology of China [LFSE2013-15]
作者邮箱	xghan@ibcas.ac.cn
引用统计	被引频次：79[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/27149
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Ximei,Wei, Haiwei,Chen, Quansheng,et al. The counteractive effects of nitrogen addition and watering on soil bacterial communities in a steppe ecosystem[J]. SOIL BIOLOGY & BIOCHEMISTRY,2014,72:26-34.
APA	Zhang, Ximei,Wei, Haiwei,Chen, Quansheng,&Han, Xingguo.(2014).The counteractive effects of nitrogen addition and watering on soil bacterial communities in a steppe ecosystem.SOIL BIOLOGY & BIOCHEMISTRY,72,26-34.
MLA	Zhang, Ximei,et al."The counteractive effects of nitrogen addition and watering on soil bacterial communities in a steppe ecosystem".SOIL BIOLOGY & BIOCHEMISTRY 72(2014):26-34.

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