Articles | Volume 16, issue 7
https://doi.org/10.5194/bg-16-1543-2019
https://doi.org/10.5194/bg-16-1543-2019
Research article
 | 
11 Apr 2019
Research article |  | 11 Apr 2019

Partitioning net ecosystem exchange of CO2 on the pedon scale in the Lena River Delta, Siberia

Tim Eckhardt, Christian Knoblauch, Lars Kutzbach, David Holl, Gillian Simpson, Evgeny Abakumov, and Eva-Maria Pfeiffer

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Cited articles

Aalto, J., le Roux, P. C., and Luoto, M.: Vegetation mediates soil temperature and moisture in arctic-alpine environments, Arct. Antarct. Alp. Res., 45, 429–439, https://doi.org/10.1657/1938-4246-45.4.429, 2013. 
AMAP: Snow, Water, Ice and Permafrost in the Arctic (SWIPA) 2017, Arctic Monitoring and Assessment Programme (AMAP), Oslo, Norway, xiv, 269 pp., 2017. 
Beermann, F., Teltewskoi, A., Fiencke, C., Pfeiffer, E. M., and Kutzbach, L.: Stoichiometric analysis of nutrient availability (N, P, K) within soils of polygonal tundra, Biogeochemistry, 122, 211–227, https://doi.org/10.1007/s10533-014-0037-4, 2015. 
Beermann, F., Langer, M., Wetterich, S., Strauss, J., Boike, J., Fiencke, C., Schirrmeister, L., Pfeiffer, E.-M., and Kutzbach, L.: Permafrost Thaw and Liberation of Inorganic Nitrogen in Eastern Siberia, Permafrost Periglac., 28, 605–618, https://doi.org/10.1002/ppp.1958, 2017. 
Biasi, C., Jokinen, S., Marushchak, M. E., Hämäläinen, K., Trubnikova, T., Oinonen, M., and Martikainen, P. J.: Microbial Respiration in Arctic Upland and Peat Soils as a Source of Atmospheric Carbon Dioxide, Ecosystems, 17, 112–126, https://doi.org/10.1007/s10021-013-9710-z, 2014. 
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Short summary
We quantified the contribution of individual components governing the net ecosystem exchange of CO2 and how these fluxes respond to environmental changes in a drained and water-saturated site in the polygonal tundra of northeast Siberia. This work finds both sites as a sink for atmospheric CO2 during the growing season, but sink strengths varied between the sites. Furthermore, it was shown that soil hydrological conditions were one of the key drivers for differing CO2 fluxes between the sites.
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