Shrub encroachment is associated with changes in soil bacterial community composition in a temperate grassland ecosystem

doi:10.1007/s11104-018-3605-x

	Shrub encroachment is associated with changes in soil bacterial community composition in a temperate grassland ecosystem
	Xiang, Xingjia 1,2; Gibbons, Sean M.; Li, He 5; Shen, Haihua 5; Fang, Jingyun5,6,7 ; Chu, Haiyan
	2018
发表期刊	PLANT AND SOIL
ISSN	0032-079X
卷号	425 期号:1-2 页码:539-551
摘要	Aims The effects of shrub encroachment on plant and soil properties have been well studied. However, little is known about how shrub encroachment influences soil bacterial communities. We investigated the effects of shrub encroachment on grassland soil bacterial communities along a soil depth gradient in the Inner Mongolian region of China. Methods The belowground bacterial communities were examined using high-throughput sequencing of the 16S rRNA gene (V4-V5 region, Illumina MiSeq). Results Bacterial alpha-diversity was higher in shrub-encroached soils than in control grassland soils. Bacterial OTU richness was highest at 0-20 cm soil depths, while phylogenetic diversity was greatest at 10-20 cm soil depths. At each soil depth layer, shrub encroachment was associated with a significant shift in bacterial community composition. Change in soil pH was the factor most strongly related to change in bacterial community composition associated with shrub encroachment at all four depth horizons in the soils. Shrub encroachment appears to alter the distribution of bacterial life history strategies in the surface soil (i.e., showing an enrichment in copiotrophs and a depletion in oligotrophs) and shrubs are associated with an increase in nitrification potential in deeper soil horizons. Conclusions Our results indicate that the influence of shrub encroachment on bacterial community composition extends deep into the soil. The intensity of shrub encroachment at this study site suggests that this ecosystem is undergoing dramatic succession towards shrub-dominance, which will likely trigger shifts in ecosystem function.
关键词	Shrub encroachment Bacterial community Soil pH Soil depth Grassland ecosystem
学科领域	Agronomy ; Plant Sciences ; Soil Science
DOI	10.1007/s11104-018-3605-x
收录类别	SCI
语种	英语
WOS关键词	WOODY PLANT ENCROACHMENT ; ORGANIC-CARBON ; MICROBIAL COMMUNITIES ; JUNIPERUS-VIRGINIANA ; RETAMA-SPHAEROCARPA ; MESIC GRASSLAND ; NEW-MEXICO ; LAND-USE ; DYNAMICS ; EXPANSION
WOS记录号	WOS:000430992300038
出版者	SPRINGER
文献子类	Article
出版地	DORDRECHT
EISSN	1573-5036
资助机构	National Program on Key Basic Research Project (973 Program)National Basic Research Program of China [2014CB954002] ; Strategic Priority Research Program of Chinese Academy of SciencesChinese Academy of Sciences [XDB15010101] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41071121, 31330012]
作者邮箱	hychu@issas.ac.cn
作品OA属性	Green Submitted
引用统计	被引频次：27[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/2S10CLM1/20500
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 Soil Sci, State Key Lab Soil & Sustainable Agr, East Beijing Rd 71, Nanjing 210008, Jiangsu, Peoples R China 2.Anhui Univ, Sch Resources & Environm Engn, Hefei 230601, Anhui, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Gibbons, Sean M.] MIT, Dept Biol Engn, Cambridge, MA 02139 USA 5.Gibbons, Sean M.] Broad Inst MIT & Harvard, Cambridge, MA 02139 USA 6.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 7.Peking Univ, Dept Ecol, Coll Urban & Environm, Beijing 100871, Peoples R China 8.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Xiang, Xingjia,Gibbons, Sean M.,Li, He,et al. Shrub encroachment is associated with changes in soil bacterial community composition in a temperate grassland ecosystem[J]. PLANT AND SOIL,2018,425(1-2):539-551.
APA	Xiang, Xingjia,Gibbons, Sean M.,Li, He,Shen, Haihua,Fang, Jingyun,&Chu, Haiyan.(2018).Shrub encroachment is associated with changes in soil bacterial community composition in a temperate grassland ecosystem.PLANT AND SOIL,425(1-2),539-551.
MLA	Xiang, Xingjia,et al."Shrub encroachment is associated with changes in soil bacterial community composition in a temperate grassland ecosystem".PLANT AND SOIL 425.1-2(2018):539-551.

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