Articles | Volume 14, issue 7
https://doi.org/10.5194/bg-14-2003-2017
https://doi.org/10.5194/bg-14-2003-2017
Research article
 | 
12 Apr 2017
Research article |  | 12 Apr 2017

Modelling the demand for new nitrogen fixation by terrestrial ecosystems

Xu-Ri and I. Colin Prentice

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (Editor review) (14 Feb 2017) by Mathew Williams
AR by Xu-Ri Xu-Ri on behalf of the Authors (25 Feb 2017)  Author's response    Manuscript
ED: Publish as is (27 Feb 2017) by Mathew Williams
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Short summary
We estimated the global demand for new N fixation (NNF) by terrestrial ecosystem using a DyN-LPJ model. Modelled NPP and C : N ratios of litter and soil organic matter were consistent with independent estimates. Modelled NNF was sensitive to the fraction of litter carbon respired to CO2 during decomposition and plant-type-specific C : N ratios of litter and soil. The modelled annual NNF increased 15% due to increasing CO2, while the future capacity of N sources to support this is unknown.
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