Biogeosciences
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Articles | Volume 17, issue 13
Articles | Volume 17, issue 13
https://doi.org/10.5194/bg-17-3643-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-3643-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 13
Research article
 | 
13 Jul 2020
Research article |  | 13 Jul 2020

Modeling biological nitrogen fixation in global natural terrestrial ecosystems

Tong Yu and Qianlai Zhuang

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Short summary
Biological nitrogen fixation (BNF) plays an important role in the global nitrogen cycle. However, the fixation rate has usually been measured or estimated at a particular observational site. This study develops a BNF model considering the symbiotic relationship between legume plants and bacteria. The model is extensively calibrated with site-level observational data and then extrapolated to the global terrestrial ecosystems to quantify the fixation rate in the 1990s.
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