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Tundra landscape he...
Tundra landscape heterogeneity, not interannual variability, controls the decadal regional carbon balance in the Western Russian Arctic
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- Treat, Claire C. (author)
- University of Eastern Finland
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- Marushchak, Maija E. (author)
- University of Eastern Finland
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- Voigt, Carolina (author)
- University of Eastern Finland
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- Zhang, Yu (author)
- Natural Resources Canada
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- Tan, Zeli (author)
- Pacific Northwest National Laboratory,Purdue University
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- Zhuang, Qianlai (author)
- Purdue University
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- Virtanen, Tarmo A. (author)
- University of Helsinki
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- Räsänen, Aleksi (author)
- Norwegian University of Science and Technology,University of Helsinki
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- Biasi, Christina (author)
- University of Eastern Finland
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- Hugelius, Gustaf (author)
- Stockholm University,Stockholms universitet,Institutionen för naturgeografi
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- Kaverin, Dmitry (author)
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences
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- Miller, Paul A. (author)
- Lund University,Lunds universitet,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,MERGE: ModElling the Regional and Global Earth system,Institutionen för naturgeografi och ekosystemvetenskap,Centre for Environmental and Climate Science (CEC),Faculty of Science,Dept of Physical Geography and Ecosystem Science
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- Stendel, Martin (author)
- Danish Meteorological Institute
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- Romanovsky, Vladimir (author)
- University of Alaska Fairbanks
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- Rivkin, Felix (author)
- Lomonosov Moscow State University
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- Martikainen, Pertti J. (author)
- University of Eastern Finland
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- Shurpali, Narasinha J. (author)
- University of Eastern Finland
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(creator_code:org_t)
- 2018-09-09
- 2018
- English.
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In: Global Change Biology. - : Wiley. - 1354-1013 .- 1365-2486. ; 24:11, s. 5188-5204
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http://dx.doi.org/10...
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Abstract
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- Across the Arctic, the net ecosystem carbon (C) balance of tundra ecosystems is highly uncertain due to substantial temporal variability of C fluxes and to landscape heterogeneity. We modeled both carbon dioxide (CO2) and methane (CH4) fluxes for the dominant land cover types in a similar to 100-km(2) sub-Arctic tundra region in northeast European Russia for the period of 2006-2015 using process-based biogeochemical models. Modeled net annual CO2 fluxes ranged from --300 g C m(-2) year(-1) [net uptake] in a willow fen to 3 g Cm-2 year(-1) [net source] in dry lichen tundra. Modeled annual CH4 emissions ranged from -0.2 to 22.3 g Cm-2 year(-1) at a peat plateau site and a willow fen site, respectively. Interannual variability over the decade was relatively small (20%-25%) in comparison with variability among the land cover types (150%). Using high-resolution land cover classification, the region was a net sink of atmospheric CO2 across most land cover types but a net source of CH4 to the atmosphere due to high emissions from permafrost-free fens. Using a lower resolution for land cover classification resulted in a 20%-65% underestimation of regional CH4 flux relative to high-resolution classification and smaller (10%) overestimation of regional CO2 uptake due to the underestimation of wetland area by 60%. The relative fraction of uplands versus wetlands was key to determining the net regional C balance at this and other Arctic tundra sites because wetlands were hot spots for C cycling in Arctic tundra ecosystems.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Naturgeografi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Physical Geography (hsv//eng)
Keyword
- ecosystem modeling
- methane
- net ecosystem CO2 exchange
- peatland
- permafrost
- regional carbon balance
- Russia
- Tundra
- ecosystem modeling
- methane
- net ecosystem CO exchange
- peatland
- permafrost
- regional carbon balance
- Russia
- Tundra
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Treat, Claire C.
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Marushchak, Maij ...
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Voigt, Carolina
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Zhang, Yu
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Tan, Zeli
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Zhuang, Qianlai
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show more...
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Virtanen, Tarmo ...
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Räsänen, Aleksi
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Biasi, Christina
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Hugelius, Gustaf
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Kaverin, Dmitry
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Miller, Paul A.
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Stendel, Martin
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Romanovsky, Vlad ...
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Rivkin, Felix
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Martikainen, Per ...
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Shurpali, Narasi ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Physical Geograp ...
- Articles in the publication
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Global Change Bi ...
- By the university
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Stockholm University
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Lund University