Evaluating Seasonal Variations of CO₂ Fluxes from Peatland Areas in the Mongolian Permafrost Region

DOI

10.2991/978-94-6463-278-1_2How to use a DOI?

Keywords

Greenhouse gas; organic carbon in soil; permafrost; peat; emission factor

Abstract

Greenhouse gases (GHGs) released from permafrost regions may have positive feedback on climate change, but there is much uncertainty about additional warming from the permafrost carbon cycle. One of the main reasons for this uncertainty is that the observation data for large-scale GHG fluxes are sparse, especially for peatlands with rapid permafrost degradation. This study (1) evaluated the seasonal variation of carbon dioxide (CO₂) fluxes from peatlands in the permafrost region; (2) analyzed the organic carbon content of the soil (SOCC); and (3) estimated emission factors (EFs) for peatlands. CO₂ fluxes were measured at 100 study sites in four different study areas such as the natural area, the fall / summer use area, the spring / winter use area, and the mixed-use area. CO₂ was measured with an EGM-4 instrument with a chamber. Soil samples were collected from the surface at 30 cm depth at all sites. The result showed that the CO₂ fluxes ranged between 1.0 µmol/m^-2 /s^-1 and 21.8 µmol/m^-2 /s^-1 at 100 study sites in the spring season, while it ranged between 3.0 µmol/m^-2 /s^-1 and 35.8 µmol/m^-2 /s^-1 in the summer season. CO₂ fluxes showed lower values in autumn than in the other two seasons, which may depend on many factors of climate conditions. There were significant seasonal variations in CO₂ fluxes in four different areas. To do so, the EFs in the peatlands were calculated at 169.30 g [CO₂] m^-2 year-1 (standard error ± 8.93), and 8.91 g [CH₄] m^-2 year-1 (standard error ± 0.47). More detailed research is needed to develop EFs for peatlands in the Mongolian permafrost region. Then it could be used for the inventory of greenhouse gases in land use areas such as peatlands at the national level.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Saruulzaya Adiya
AU  - Tsogt-Erdene Gansukh
AU  - Batzorig Batbold
PY  - 2023
DA  - 2023/10/29
TI  - Evaluating Seasonal Variations of CO₂ Fluxes from Peatland Areas in the Mongolian Permafrost Region
BT  - Proceedings of the Fourth International Conference on Environmental Science and Technology (EST 2023)
PB  - Atlantis Press
SP  - 7
EP  - 16
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-278-1_2
DO  - 10.2991/978-94-6463-278-1_2
ID  - Adiya2023
ER  -