Convergence of microbial assimilations of soil carbon, nitrogen, phosphorus, and sulfur in terrestrial ecosystems

doi:10.1038/srep17445

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Convergence of microbial assimilations of soil carbon, nitrogen, phosphorus, and sulfur in terrestrial ecosystems
	Xu, Xiaofeng 4; Hui, Dafeng 5; King, Anthony W.; Song, Xia ; Thornton, Peter E.; Zhang, Lihua 1
刊名	SCIENTIFIC REPORTS
	2015
卷号	5
ISSN号	2045-2322
DOI	10.1038/srep17445
文献子类	Article
英文摘要	How soil microbes assimilate carbon-C, nitrogen-N, phosphorus-P, and sulfur-S is fundamental for understanding nutrient cycling in terrestrial ecosystems. We compiled a global database of C, N, P, and S concentrations in soils and microbes and developed relationships between them by using a power function model. The C:N:P:S was estimated to be 287:17:1:0.8 for soils, and 42:6:1:0.4 for microbes. We found a convergence of the relationships between elements in soils and in soil microbial biomass across C, N, P, and S. The element concentrations in soil microbial biomass follow a homeostatic regulation curve with soil element concentrations across C, N, P and S, implying a unifying mechanism of microbial assimilating soil elements. This correlation explains the wellconstrained C: N: P: S stoichiometry with a slightly larger variation in soils than in microbial biomass. Meanwhile, it is estimated that the minimum requirements of soil elements for soil microbes are 0.8 mmol C Kg(-1) dry soil, 0.1 mmol N Kg(-1) dry soil, 0.1 mmol P Kg(-1) dry soil, and 0.1 mmol S Kg(-1) dry soil, respectively. These findings provide a mathematical explanation of element imbalance in soils and soil microbial biomass, and offer insights for incorporating microbial contribution to nutrient cycling into Earth system models.
学科主题	Multidisciplinary Sciences
出版地	LONDON
WOS关键词	N-P STOICHIOMETRY ; ORGANIC-CARBON ; BIOMASS CARBON ; HOMEOSTASIS ; SUBSTRATE ; RATIOS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000365477200001
资助机构	US Department of Energy, Office of Science, Biological and Environmental Research (BER) program ; US Department of Energy [DE-AC05-00OR2725] ; University of Texas at El Paso ; National Natural Science Foundation of China [41371111, 40801037] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA05050406-06]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/25959]
专题	植被与环境变化国家重点实验室
作者单位	1.Tennessee State Univ, Dept Biol Sci, Nashville, TN 37209 USA 2.Univ Texas El Paso, Dept Biol Sci, El Paso, TX 79902 USA 3.Xu, Xiaofeng; King, Anthony W.; Song, Xia; Thornton, Peter E.] Oak Ridge Natl Lab, Climate Change Sci Inst, Oak Ridge, TN 37831 USA 4.Xu, Xiaofeng; King, Anthony W.; Song, Xia; Thornton, Peter E.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA 5.San Diego State Univ, Dept Biol, San Diego, CA 92182 USA 6.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	Xu, Xiaofeng,Hui, Dafeng,King, Anthony W.,et al. Convergence of microbial assimilations of soil carbon, nitrogen, phosphorus, and sulfur in terrestrial ecosystems[J]. SCIENTIFIC REPORTS,2015,5.
APA	Xu, Xiaofeng,Hui, Dafeng,King, Anthony W.,Song, Xia,Thornton, Peter E.,&Zhang, Lihua.(2015).Convergence of microbial assimilations of soil carbon, nitrogen, phosphorus, and sulfur in terrestrial ecosystems.SCIENTIFIC REPORTS,5.
MLA	Xu, Xiaofeng,et al."Convergence of microbial assimilations of soil carbon, nitrogen, phosphorus, and sulfur in terrestrial ecosystems".SCIENTIFIC REPORTS 5(2015).