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

Författare:
Publiceringsår: 2012
Språk: Engelska
Sidor: 207-217
Publikation/Tidskrift/Serie: Ambio
Volym: 41
Dokumenttyp: Artikel
Förlag: Springer

Sammanfattning

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.

Disputation

Nyckelord

  • Earth and Environmental Sciences
  • Carbon cycling
  • Subarctic mire
  • Permafrost
  • Land-atmosphere exchange
  • Climate change

Övriga

Published
  • BECC
  • MERGE
Yes
  • ISSN: 0044-7447

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