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

文献类型：期刊论文

作者Xu, Xiaofeng4; Hui, Dafeng5; King, Anthony W.; Song, Xia; Thornton, Peter E.; Zhang, Lihua1
刊名SCIENTIFIC REPORTS
出版日期2015
卷号5
ISSN号2045-2322
DOI10.1038/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
WOS记录号WOS:000365477200001
出版者NATURE PUBLISHING GROUP
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]
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).

入库方式： OAI收割

来源：植物研究所

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