Articles | Volume 18, issue 13
Biogeosciences, 18, 4143–4183, 2021
https://doi.org/10.5194/bg-18-4143-2021
Biogeosciences, 18, 4143–4183, 2021
https://doi.org/10.5194/bg-18-4143-2021

Research article 13 Jul 2021

Research article | 13 Jul 2021

A novel representation of biological nitrogen fixation and competitive dynamics between nitrogen-fixing and non-fixing plants in a land model (GFDL LM4.1-BNF)

Sian Kou-Giesbrecht et al.

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Short summary
Representing biological nitrogen fixation (BNF) is an important challenge for land models. We present a novel representation of BNF and updated nitrogen cycling in a land model. It includes a representation of asymbiotic BNF by soil microbes and the competitive dynamics between nitrogen-fixing and non-fixing plants. It improves estimations of major carbon and nitrogen pools and fluxes and their temporal dynamics in comparison to previous representations of BNF in land models.
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