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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Cited articles

Adams, M. A., Turnbull, T. L., Sprent, J. I., and Buchmann, N.: Legumes are different: Leaf nitrogen, photosynthesis, and water use efficiency, P. Natl. Acad. Sci. USA, 113, 4098–4103, https://doi.org/10.1073/pnas.1523936113, 2016. 
Anderson-Teixeira, K. J., Wang, M. M. H., McGarvey, J. C., Herrmann, V., Tepley, A. J., Bond-Lamberty, B., and LeBauer, D. S.: ForC: a global database of forest carbon stocks and fluxes, Ecology, 99, 1507, https://doi.org/10.1002/ecy.2229, 2018. 
Asner, G. P., Scurlock, J. M. O., and Hicke, J. A.: Global synthesis of leaf area index observations: implications for ecological and remote sensing studies, Global Ecol. Biogeogr., 12, 191–205, 2003. 
Averill, C., Bhatnagar, J. M., Dietze, M. C., Pearse, W. D., and Kivlin, S. N.: Global imprint of mycorrhizal fungi on whole-plant nutrient economics, P. Natl. Acad. Sci. USA, 116, 23163–23168, https://doi.org/10.1073/pnas.1906655116, 2019. 
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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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