Biogeosciences
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Articles | Volume 13, issue 9
Articles | Volume 13, issue 9
https://doi.org/10.5194/bg-13-2689-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-2689-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 13, issue 9
Research article
 | 
10 May 2016
Research article |  | 10 May 2016

Processes regulating progressive nitrogen limitation under elevated carbon dioxide: a meta-analysis

Junyi Liang, Xuan Qi, Lara Souza, and Yiqi Luo

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Short summary
It is unclear how the nitrogen (N) cycle regulates climate change through influencing carbon sequestration. By using meta-analysis, we tested a popular hypothesis, progressive N limitation (PNL), which postulates that greater N sequestration in organisms leads to declining N availability for further plant growth under elevated CO2. Our analyses suggest that extra nitrogen supply by increased biological N fixation and decreased leaching may potentially alleviate PNL.
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