Articles | Volume 17, issue 18
https://doi.org/10.5194/bg-17-4591-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-4591-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Sep 2020
Research article |
| 21 Sep 2020
| 21 Sep 2020
Microbial dormancy and its impacts on northern temperate and boreal terrestrial ecosystem carbon budget
Junrong Zha
Department of Earth, Atmospheric, and Planetary Sciences and Department of
Agronomy, Purdue University, West Lafayette, IN 47907 USA
Department of Earth, Atmospheric, and Planetary Sciences and Department of
Agronomy, Purdue University, West Lafayette, IN 47907 USA
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We use a biogeochemistry model to calculate the regional N2O emissions considering the effects of N2O uptake, thawing permafrost, and N deposition. Our simulations show there is an increasing trend in regional net N2O emissions from 1969 to 2019. Annual N2O emissions exhibited big spatial variabilities. Nitrogen deposition leads to a significant increase in emission. Our results suggest that in the future, the pan-Arctic terrestrial ecosystem might act as an even larger N2O.
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Short summary
This study incorporated microbial dormancy into a detailed microbe-based biogeochemistry model to examine the fate of Arctic carbon budgets under changing climate conditions. Compared with the model without microbial dormancy, the new model estimated a much higher carbon accumulation in the region during the last and current century. This study highlights the importance of the representation of microbial dormancy in earth system models to adequately quantify the carbon dynamics in the Arctic.
This study incorporated microbial dormancy into a detailed microbe-based biogeochemistry model...
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