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Monitoring the Multi-Year Carbon Balance of a Subarctic Palsa Mire with Micrometeorological Techniques

Author:
  • Torben Christensen
  • Marcin Jackowicz-Korczynski
  • Mika Aurela
  • Patrick Crill
  • Michal Heliasz
  • Mikhail Mastepanov
  • Thomas Friborg
Publishing year: 2012
Language: English
Pages: 207-217
Publication/Series: Ambio: a Journal of Human Environment
Volume: 41
Document type: Journal article
Publisher: Springer

Abstract english

This article reports a dataset on 8 years of monitoring carbon fluxes in a subarctic palsa mire based on micrometeorological eddy covariance measurements. The mire is a complex with wet minerotrophic areas and elevated dry palsa as well as intermediate sub-ecosystems. The measurements document primarily the emission originating from the wet parts of the mire dominated by a rather homogenous cover of Eriophorum angustifolium. The CO2/CH4 flux measurements performed during the years 2001-2008 showed that the areas represented in the measurements were a relatively stable sink of carbon with an average annual rate of uptake amounting to on average -46 g C m(-2) y(-1) including an equally stable loss through CH4 emissions (18-22 g CH4-C m(-2) y(-1)). This consistent carbon sink combined with substantial CH4 emissions is most likely what is to be expected as the permafrost under palsa mires degrades in response to climate warming.

Keywords

  • Physical Geography
  • Carbon cycling
  • Subarctic mire
  • Permafrost
  • Land-atmosphere exchange
  • Climate change

Other

Published
  • ISSN: 0044-7447
E-mail: michal [dot] heliasz [at] cec [dot] lu [dot] se

Research engineer

Centre for Environmental and Climate Research (CEC)

+46 70 742 13 67

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Research engineer

Dept of Physical Geography and Ecosystem Science

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Research engineer

ICOS Sweden

+46 70 742 13 67

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Department of Physical Geography and Ecosystem Science
Lund University
Sölvegatan 12
S-223 62 Lund
Sweden

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