A globally relevant stock of soil nitrogen in the Yedoma permafrost domain

Strauss, Jens; Biasi, Christina; Sanders, Tina; Abbott, Benjamin W.; von Deimling, Thomas Schneider; Voigt, Carolina; Winkel, Matthias; Marushchak, Maija E.; Kou, Dan; Fuchs, Matthias; Horn, Marcus A.; Jongejans, Loeka L.; Liebner, Susanne; Nitzbon, Jan; Schirrmeister, Lutz; Walter Anthony, Katey; Yang, Yuanhe; Zubrzycki, Sebastian; Laboor, Sebastian; Treat, Claire; Grosse, Guido

doi:10.1038/s41467-022-33794-9

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A globally relevant stock of soil nitrogen in the Yedoma permafrost domain

Authors

Strauss, Jens
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Biasi, Christina
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Sanders, Tina
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Abbott, Benjamin W.
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von Deimling, Thomas Schneider
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Voigt, Carolina
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/persons/resource/mwinkel

Winkel, Matthias
3.5 Interface Geochemistry, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Marushchak, Maija E.
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Kou, Dan
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Fuchs, Matthias
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Horn, Marcus A.
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Jongejans, Loeka L.
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Liebner, Susanne
3.7 Geomicrobiology, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Nitzbon, Jan
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Schirrmeister, Lutz
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Walter Anthony, Katey
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Yang, Yuanhe
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Zubrzycki, Sebastian
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Laboor, Sebastian
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Treat, Claire
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Grosse, Guido
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Citation

Strauss, J., Biasi, C., Sanders, T., Abbott, B. W., von Deimling, T. S., Voigt, C., Winkel, M., Marushchak, M. E., Kou, D., Fuchs, M., Horn, M. A., Jongejans, L. L., Liebner, S., Nitzbon, J., Schirrmeister, L., Walter Anthony, K., Yang, Y., Zubrzycki, S., Laboor, S., Treat, C., Grosse, G. (2022): A globally relevant stock of soil nitrogen in the Yedoma permafrost domain. - Nature Communications, 13, 6074.
https://doi.org/10.1038/s41467-022-33794-9

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5013460

Abstract

Nitrogen regulates multiple aspects of the permafrost climate feedback, including plant growth, organic matter decomposition, and the production of the potent greenhouse gas nitrous oxide. Despite its importance, current estimates of permafrost nitrogen are highly uncertain. Here, we compiled a dataset of >2000 samples to quantify nitrogen stocks in the Yedoma domain, a region with organic-rich permafrost that contains ~25% of all permafrost carbon. We estimate that the Yedoma domain contains 41.2 gigatons of nitrogen down to ~20 metre for the deepest unit, which increases the previous estimate for the entire permafrost zone by ~46%. Approximately 90% of this nitrogen (37 gigatons) is stored in permafrost and therefore currently immobile and frozen. Here, we show that of this amount, ¾ is stored >3 metre depth, but if partially mobilised by thaw, this large nitrogen pool could have continental-scale consequences for soil and aquatic biogeochemistry and global-scale consequences for the permafrost feedback.