Responses of soil microbial communities to nutrient limitation in the desert-grassland ecological transition zone

doi:10.1016/j.scitotenv.2018.06.033

IEECAS OpenIR > 生态环境研究室

	Responses of soil microbial communities to nutrient limitation in the desert-grassland ecological transition zone
	Cui, Yongxing 1,2; Fang, Linchuan 1; Guo, Xiaobin 3; Wang, Xia 1,2; Wang, Yunqiang 4; Li, Pengfei 1,2; Zhang, Yanjiang 1; Zhang, Xingchang 2
通讯作者	Fang, Linchuan(flinc629@hotmail.com)
	2018-11-15
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	642 页码:45-55
摘要	Soil microorganisms are crucial to indicate ecosystem functions of terrestrial ecosystems. However, the responses of microbial communities to soil nutrient limitation in desert-grassland are still poorly understood. Hence, we investigated soil microbial community structures and metabolic characteristics in a desert-grassland ecological transition zone from the northern Loess Plateau, China, and explored the association of microbial communities with nutrient limitation via high-throughput sequencing.Threshold elemental ratios (TER) indicated that the microbial communities were strongly limited by nitrogen (N) under A. ordosica and P. tabuliformis communities. The phosphorus (P) limitation of microbial communities was observed in the aeolian sandy soil. The results imply that soil microbial communities had strong nutrient competition for N and P with aboveground vegetation in arid and oligotrophic ecosystems. The LEfSe and linear regression analysis revealed that the microbial taxa of Micrococcales, Micrococcaceae and Herpotrichiellaceae were significantly correlated with microbial N limitation. The Thermoleophilia taxa were significantly correlated with microbial P limitation. These biomarkers related to microbial nutrient limitation could be considered as the key microbial taxa to shape microbial communities and functions. Furthermore. N form had different effects on microbial communities, which NH4+-N strongly affected bacterial communities, whereas NO3--N had a significant influence on fungal communities. The different responses indicate that soil microorganisms had corresponding nutrient preferences for bacterial and fungal communities, which might alleviate the nutrient limitations and environmental stress. This study provided important insights on microbial community structures linking to community functions and on the mechanisms governing microbial N and P limitation in arid land ecosystems. (C) 2018 Elsevier B.V. All rights reserved.
关键词	Ecological transition zone Community function Enzyme 16S rRNA ITS rRNA Nutrient limitation
DOI	10.1016/j.scitotenv.2018.06.033
关键词[WOS]	LEAF-LITTER DECOMPOSITION ; ECOENZYMATIC STOICHIOMETRY ; ORGANIC-MATTER ; LOESS PLATEAU ; LAND-USE ; EXTRACTION METHOD ; NITROGEN ; DIVERSITY ; BIOMASS ; PHOSPHORUS
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[41571314] ; National Natural Science Foundation of China[41201226] ; CAS Light of West China Program[XAB2016A03]
WOS研究方向	Environmental Sciences & Ecology
项目资助者	National Natural Science Foundation of China ; CAS Light of West China Program
WOS类目	Environmental Sciences
WOS记录号	WOS:000439405600005
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：89[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/13244
专题	生态环境研究室
通讯作者	Fang, Linchuan
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Govt Newfoundland & Labrador, Dept Fisheries & Land Resources, Agr Prod & Res Div, Corner Brook, NF A2H 6J8, Canada 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Cui, Yongxing,Fang, Linchuan,Guo, Xiaobin,et al. Responses of soil microbial communities to nutrient limitation in the desert-grassland ecological transition zone[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,642:45-55.
APA	Cui, Yongxing.,Fang, Linchuan.,Guo, Xiaobin.,Wang, Xia.,Wang, Yunqiang.,...&Zhang, Xingchang.(2018).Responses of soil microbial communities to nutrient limitation in the desert-grassland ecological transition zone.SCIENCE OF THE TOTAL ENVIRONMENT,642,45-55.
MLA	Cui, Yongxing,et al."Responses of soil microbial communities to nutrient limitation in the desert-grassland ecological transition zone".SCIENCE OF THE TOTAL ENVIRONMENT 642(2018):45-55.