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RESEARCH PRODUCT
A globally relevant stock of soil nitrogen in the Yedoma permafrost domain
Jens StraussChristina BiasiTina SandersBenjamin W. AbbottThomas Schneider Von DeimlingCarolina VoigtMatthias WinkelMaija E. MarushchakDan KouMatthias FuchsMarcus A. HornLoeka L. JongejansSusanne LiebnerJan NitzbonLutz SchirrmeisterKatey Walter AnthonyYuanhe YangSebastian ZubrzyckiSebastian LaboorClaire C. TreatGuido Grossesubject
biogeokemiamaaperäarktinen alueMultidisciplinaryNitrogenNitrous OxideGeneral Physics and AstronomyPermafrostikiroutaGeneral ChemistryilmastonmuutoksetGeneral Biochemistry Genetics and Molecular BiologyCarbonGreenhouse GasesSoiltypen kiertoorgaaninen ainesddc:500Dewey Decimal Classification::500 | Naturwissenschaftendescription
AbstractNitrogen 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-01-01 |