Articles | Volume 19, issue 10
https://doi.org/10.5194/bg-19-2683-2022
© Author(s) 2022. 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-19-2683-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
31 May 2022
Research article |
| 31 May 2022
| 31 May 2022
Sources of nitrous oxide and the fate of mineral nitrogen in subarctic permafrost peat soils
Department of Environmental and Biological Sciences, University of
Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland
Natural Science Building, 288 Farm Lane, East Lansing, MI 48824, USA
Maija E. Marushchak
Department of Environmental and Biological Sciences, University of
Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland
Department of Biological and Environmental Science, University of
Jyväskylä, P.O. Box 35, 40014 Jyväskylä,
Finland
Tobias Rütting
Department of Earth Sciences, University of Gothenburg, P.O. Box 460, 40530 Gothenburg, Sweden
Elizabeth M. Baggs
Global Academy of Agriculture and Food Security, The Royal (Dick)
School of Veterinary Studies, University of Edinburgh, Easter Bush Campus,
Midlothian EH25 9RG, UK
Tibisay Pérez
Centro de Ciencias Atmosféricas y Biogeoquímica (IVIC), Aptdo
20634, Caracas 1020A, Venezuela
Alexander Novakovskiy
Institute of Biology, Komi SC UB RAS, 167982 Syktyvkar, Russia
Tatiana Trubnikova
Department of Environmental and Biological Sciences, University of
Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland
Dmitry Kaverin
Institute of Biology, Komi SC UB RAS, 167982 Syktyvkar, Russia
Pertti J. Martikainen
Department of Environmental and Biological Sciences, University of
Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland
Christina Biasi
Department of Environmental and Biological Sciences, University of
Eastern Finland, P.O. Box 1627, 70211 Kuopio, Finland
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This preprint is open for discussion and under review for Biogeosciences (BG).
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EGUsphere, https://doi.org/10.5194/egusphere-2025-2179, https://doi.org/10.5194/egusphere-2025-2179, 2025
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Arctic greenhouse gas (GHG) fluxes of CO2, CH4, and N2O are important for climate feedbacks. We combined extensive in situ measurements and remote sensing data to develop machine-learning models to predict GHG fluxes at a 2 m resolution across a tundra landscape. The analysis revealed that the system was a net GHG sink and showed widespread CH4 uptake in upland vegetation types, almost surpassing the high wetland CH4 emissions at the landscape scale.
Anna-Maria Virkkala, Susan M. Natali, Brendan M. Rogers, Jennifer D. Watts, Kathleen Savage, Sara June Connon, Marguerite Mauritz, Edward A. G. Schuur, Darcy Peter, Christina Minions, Julia Nojeim, Roisin Commane, Craig A. Emmerton, Mathias Goeckede, Manuel Helbig, David Holl, Hiroki Iwata, Hideki Kobayashi, Pasi Kolari, Efrén López-Blanco, Maija E. Marushchak, Mikhail Mastepanov, Lutz Merbold, Frans-Jan W. Parmentier, Matthias Peichl, Torsten Sachs, Oliver Sonnentag, Masahito Ueyama, Carolina Voigt, Mika Aurela, Julia Boike, Gerardo Celis, Namyi Chae, Torben R. Christensen, M. Syndonia Bret-Harte, Sigrid Dengel, Han Dolman, Colin W. Edgar, Bo Elberling, Eugenie Euskirchen, Achim Grelle, Juha Hatakka, Elyn Humphreys, Järvi Järveoja, Ayumi Kotani, Lars Kutzbach, Tuomas Laurila, Annalea Lohila, Ivan Mammarella, Yojiro Matsuura, Gesa Meyer, Mats B. Nilsson, Steven F. Oberbauer, Sang-Jong Park, Roman Petrov, Anatoly S. Prokushkin, Christopher Schulze, Vincent L. St. Louis, Eeva-Stiina Tuittila, Juha-Pekka Tuovinen, William Quinton, Andrej Varlagin, Donatella Zona, and Viacheslav I. Zyryanov
Earth Syst. Sci. Data, 14, 179–208, https://doi.org/10.5194/essd-14-179-2022, https://doi.org/10.5194/essd-14-179-2022, 2022
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The effects of climate warming on carbon cycling across the Arctic–boreal zone (ABZ) remain poorly understood due to the relatively limited distribution of ABZ flux sites. Fortunately, this flux network is constantly increasing, but new measurements are published in various platforms, making it challenging to understand the ABZ carbon cycle as a whole. Here, we compiled a new database of Arctic–boreal CO2 fluxes to help facilitate large-scale assessments of the ABZ carbon cycle.
Kirsty C. Paterson, Joanna M. Cloy, Robert M. Rees, Elizabeth M. Baggs, Hugh Martineau, Dario Fornara, Andrew J. Macdonald, and Sarah Buckingham
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Soil organic carbon sequestration across agroecosystems worldwide can contribute to mitigating the effects of climate change by reducing levels of atmospheric carbon dioxide. The maximum carbon sequestration potential is frequently estimated using the linear regression equation developed by Hassink (1997). This work examines the suitability of this equation for use in grasslands across the United Kingdom. The results highlight the need to ensure the fit of equations to the soils being studied.
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Short summary
N2O emissions from permafrost soils represent up to 11.6 % of total N2O emissions from natural soils, and their contribution to the global N2O budget will likely increase due to climate change. A better understanding of N2O production from permafrost soil is needed to evaluate the role of arctic ecosystems in the global N2O budget. By studying microbial N2O production processes in N2O hotspots in permafrost peatlands, we identified denitrification as the dominant source of N2O in these surfaces.
N2O emissions from permafrost soils represent up to 11.6 % of total N2O emissions from natural...
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