The growing season greenhouse gas balance of a continental tundra site in the Indigirka lowlands, NE Siberia
(2007) In Biogeosciences 4(6). p.985-1003- Abstract
- Carbon dioxide and methane fluxes were measured at a tundra site near Chokurdakh, in the lowlands of the Indigirka river in north-east Siberia. This site is one of the few stations on Russian tundra and it is different from most other tundra flux stations in its continentality. A suite of methods was applied to determine the fluxes of NEE, GPP, R-eco and methane, including eddy covariance, chambers and leaf cuvettes. Net carbon dioxide fluxes were high compared with other tundra sites, with NEE=-92 g C m(-2) yr(-1), which is composed of an R-eco=+141 g C m(-2) yr(-1) and GPP=-232 g C m(-2) yr(-1). This large carbon dioxide sink may be explained by the continental climate, that is reflected in low winter soil temperatures (-14 degrees C),... (More)
- Carbon dioxide and methane fluxes were measured at a tundra site near Chokurdakh, in the lowlands of the Indigirka river in north-east Siberia. This site is one of the few stations on Russian tundra and it is different from most other tundra flux stations in its continentality. A suite of methods was applied to determine the fluxes of NEE, GPP, R-eco and methane, including eddy covariance, chambers and leaf cuvettes. Net carbon dioxide fluxes were high compared with other tundra sites, with NEE=-92 g C m(-2) yr(-1), which is composed of an R-eco=+141 g C m(-2) yr(-1) and GPP=-232 g C m(-2) yr(-1). This large carbon dioxide sink may be explained by the continental climate, that is reflected in low winter soil temperatures (-14 degrees C), reducing the respiration rates, and short, relatively warm summers, stimulating high photosynthesis rates. Interannual variability in GPP was dominated by the frequency of light limitation (R-g<200 W m(-2)), whereas R-eco depends most directly on soil temperature and time in the growing season, which serves as a proxy of the combined effects of active layer depth, leaf area index, soil moisture and substrate availability. The methane flux, in units of global warming potential, was +28 g C-CO(2)e m(-2) yr(-1), so that the greenhouse gas balance was -64 g C-CO(2)e m(-2) yr(-1). Methane fluxes depended only slightly on soil temperature and were highly sensitive to hydrological conditions and vegetation composition. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4221296
- author
- van der Molen, M.K. ; van Huissteden, J. ; Parmentier, Frans-Jan LU ; Petrescu, A.M.R. ; Dolman, A.J. ; Maximov, T.C. ; Kononov, A.V. ; Karsanaev, S.V. and Suzdalov, D.A.
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Biogeosciences
- volume
- 4
- issue
- 6
- pages
- 985 - 1003
- publisher
- Copernicus GmbH
- external identifiers
-
- scopus:36248974227
- ISSN
- 1726-4189
- DOI
- 10.5194/bg-4-985-2007
- language
- English
- LU publication?
- no
- id
- 1b5b0872-03d7-455a-8008-be2e7480c5df (old id 4221296)
- alternative location
- http://www.biogeosciences.net/4/985/2007/bg-4-985-2007.html
- date added to LUP
- 2016-04-01 11:48:07
- date last changed
- 2022-03-28 03:20:55
@article{1b5b0872-03d7-455a-8008-be2e7480c5df, abstract = {{Carbon dioxide and methane fluxes were measured at a tundra site near Chokurdakh, in the lowlands of the Indigirka river in north-east Siberia. This site is one of the few stations on Russian tundra and it is different from most other tundra flux stations in its continentality. A suite of methods was applied to determine the fluxes of NEE, GPP, R-eco and methane, including eddy covariance, chambers and leaf cuvettes. Net carbon dioxide fluxes were high compared with other tundra sites, with NEE=-92 g C m(-2) yr(-1), which is composed of an R-eco=+141 g C m(-2) yr(-1) and GPP=-232 g C m(-2) yr(-1). This large carbon dioxide sink may be explained by the continental climate, that is reflected in low winter soil temperatures (-14 degrees C), reducing the respiration rates, and short, relatively warm summers, stimulating high photosynthesis rates. Interannual variability in GPP was dominated by the frequency of light limitation (R-g<200 W m(-2)), whereas R-eco depends most directly on soil temperature and time in the growing season, which serves as a proxy of the combined effects of active layer depth, leaf area index, soil moisture and substrate availability. The methane flux, in units of global warming potential, was +28 g C-CO(2)e m(-2) yr(-1), so that the greenhouse gas balance was -64 g C-CO(2)e m(-2) yr(-1). Methane fluxes depended only slightly on soil temperature and were highly sensitive to hydrological conditions and vegetation composition.}}, author = {{van der Molen, M.K. and van Huissteden, J. and Parmentier, Frans-Jan and Petrescu, A.M.R. and Dolman, A.J. and Maximov, T.C. and Kononov, A.V. and Karsanaev, S.V. and Suzdalov, D.A.}}, issn = {{1726-4189}}, language = {{eng}}, number = {{6}}, pages = {{985--1003}}, publisher = {{Copernicus GmbH}}, series = {{Biogeosciences}}, title = {{The growing season greenhouse gas balance of a continental tundra site in the Indigirka lowlands, NE Siberia}}, url = {{http://dx.doi.org/10.5194/bg-4-985-2007}}, doi = {{10.5194/bg-4-985-2007}}, volume = {{4}}, year = {{2007}}, }