Net ecosystem exchange and energy fluxes measured with the eddy covariance technique in a western Siberian bog

Pavel Alekseychik, Ivan Mammarella, Dmitry Karpov, Sigrid Dengel, Irina Terentieva, Alexander Sabrekov, Mikhail Glagolev, Elena Lapshina

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Very few studies of ecosystem-atmosphere exchange involving eddy covariance data have been conducted in Siberia, with none in the western Siberian middle taiga. This work provides the first estimates of carbon dioxide (CO2) and energy budgets in a typical bog of the western Siberian middle taiga based on May-August measurements in 2015. The footprint of measured fluxes consisted of a homogeneous mixture of tree-covered ridges and hollows with the vegetation represented by typical sedges and shrubs. Generally, the surface exchange rates resembled those of pine-covered bogs elsewhere. The surface energy balance closure approached 100ĝ€%. Net CO2 uptake was comparatively high, summing up to 202ĝ€gCĝ€mĝ'2 for the four measurement months, while the Bowen ratio was seasonally stable at 28ĝ€%. The ecosystem turned into a net CO2 source during several front passage events in June and July. The periods of heavy rain helped keep the water table at a sustainably high level, preventing a usual drawdown in summer. However, because of the cloudy and rainy weather, the observed fluxes might rather represent the special weather conditions of 2015 than their typical magnitudes.

Original languageEnglish
Pages (from-to)9333-9345
Number of pages13
JournalAtmospheric Chemistry and Physics
Volume17
Issue number15
DOIs
Publication statusPublished - 4 Aug 2017

    Fingerprint

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Alekseychik, P., Mammarella, I., Karpov, D., Dengel, S., Terentieva, I., Sabrekov, A., Glagolev, M., & Lapshina, E. (2017). Net ecosystem exchange and energy fluxes measured with the eddy covariance technique in a western Siberian bog. Atmospheric Chemistry and Physics, 17(15), 9333-9345. https://doi.org/10.5194/acp-17-9333-2017