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Elevation-based upscaling of organic carbon stocks in High-Arctic permafrost terrain: a storage and distribution assessment for Spitsbergen, Svalbard
Stockholm University, Faculty of Science, Department of Physical Geography.
Stockholm University, Faculty of Science, Department of Physical Geography.
Stockholm University, Faculty of Science, Department of Physical Geography. German Research Centre for Geoscience, Germany.
Number of Authors: 42017 (English)In: Polar Research, ISSN 0800-0395, E-ISSN 1751-8369, Vol. 36, article id 1400363Article in journal (Refereed) Published
Abstract [en]

Accurate quantity and distribution estimates of permafrost soil organic carbon (SOC) stocks are needed to project potential feedbacks to climate, following warming. Still, upscaling from local field observations to regional estimates to circumarctic assessments remains a challenge. Here we explore elevation-based upscaling techniques for High-Arctic permafrost SOC stocks. We combine two detailed, high-resolution SOC inventories on Spitsbergen (Svalbard) with regional validation data. We find a clear relationship between elevation and SOC content, and use this observed exponential correlation, as well as discrete elevation classes, as upscaling models for Spitsbergen. We estimate the total amount of permafrost SOC currently present in soils on Spitsbergen to be 105.36 Tg (0.11 Pg), with a mean SOC content of 2.84 +/- 0.74 kg C m(-2) (mean +/- 95% confidence interval). Excluding glaciers and permanent snowfields, exposed land is currently estimated to contain 6.26 +/- 1.47 kg C m(-2).

Place, publisher, year, edition, pages
2017. Vol. 36, article id 1400363
Keywords [en]
Soil organic carbon, SOC inventory, upscaling model, climate warming, greenhouse gas release
National Category
Biological Sciences Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-152505DOI: 10.1080/17518369.2017.1400363ISI: 000418995900001OAI: oai:DiVA.org:su-152505DiVA, id: diva2:1180972
Available from: 2018-02-07 Created: 2018-02-07 Last updated: 2018-02-07Bibliographically approved

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