Details
| Original language | English |
|---|---|
| Article number | 624 |
| Journal | FORESTS |
| Volume | 12 |
| Issue number | 5 |
| Publication status | Published - 14 May 2021 |
Abstract
Carbon dioxide (CO2) and methane (CH4) are recognized as the main greenhouse gases causing climate warming. In forest ecosystems, the death of trees leads to the formation of coarse woody debris (CWD) that is one of the sources of greenhouse gas emissions due to wood decomposi-tion. We quantified the CO2 and CH4 fluxes from CWD of larch (Larix gmelinii (Rupr.)) and birch (Betula tortuosa Ledeb.) collected in the northern boreal forests of Central Siberia. The CWD samples were incubated at +5, +15 and +25◦ C. The CO2 and CH4 fluxes showed strong correlations with temperature, moisture, decomposition stage and the type of wood’s rot. The temperature coefficient Q10 indicated higher temperature sensitivity of CO2 flux within the temperature interval from +5 to +15◦ C than from +15 to +25◦ C. Methane flux had higher temperature sensitivity within the interval from +15 to +25◦ C. It was found that, in boreal forests, CWD of early decay stage can serve as a source of methane to the atmosphere when air temperatures increased above +15◦ C. Strong positive correlation between CH4 production and CO2 emission indicated a biological source and supported findings on aerobic origin of the main process contributing to the CH4 flux from decomposing CWD.
Keywords
- Boreal forests, Carbon dioxide and methane emission, Coarse woody debris, Methane production and consumption, Temperature response
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Forestry
Sustainable Development Goals
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In: FORESTS, Vol. 12, No. 5, 624, 14.05.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Temperature sensitivity of CO2 and CH4 fluxes from coarse woody debris in northern boreal forests
AU - Mukhortova, Liudmila
AU - Pashenova, Natalia
AU - Meteleva, Maria
AU - Krivobokov, Leonid
AU - Guggenberger, Georg
N1 - Funding Information: Funding: The research was funded by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, project number 20-44-240008 and by State Assignment of Sukachev Institute of Forest SB RAS (N◦ 0287-2021-0008).
PY - 2021/5/14
Y1 - 2021/5/14
N2 - Carbon dioxide (CO2) and methane (CH4) are recognized as the main greenhouse gases causing climate warming. In forest ecosystems, the death of trees leads to the formation of coarse woody debris (CWD) that is one of the sources of greenhouse gas emissions due to wood decomposi-tion. We quantified the CO2 and CH4 fluxes from CWD of larch (Larix gmelinii (Rupr.)) and birch (Betula tortuosa Ledeb.) collected in the northern boreal forests of Central Siberia. The CWD samples were incubated at +5, +15 and +25◦ C. The CO2 and CH4 fluxes showed strong correlations with temperature, moisture, decomposition stage and the type of wood’s rot. The temperature coefficient Q10 indicated higher temperature sensitivity of CO2 flux within the temperature interval from +5 to +15◦ C than from +15 to +25◦ C. Methane flux had higher temperature sensitivity within the interval from +15 to +25◦ C. It was found that, in boreal forests, CWD of early decay stage can serve as a source of methane to the atmosphere when air temperatures increased above +15◦ C. Strong positive correlation between CH4 production and CO2 emission indicated a biological source and supported findings on aerobic origin of the main process contributing to the CH4 flux from decomposing CWD.
AB - Carbon dioxide (CO2) and methane (CH4) are recognized as the main greenhouse gases causing climate warming. In forest ecosystems, the death of trees leads to the formation of coarse woody debris (CWD) that is one of the sources of greenhouse gas emissions due to wood decomposi-tion. We quantified the CO2 and CH4 fluxes from CWD of larch (Larix gmelinii (Rupr.)) and birch (Betula tortuosa Ledeb.) collected in the northern boreal forests of Central Siberia. The CWD samples were incubated at +5, +15 and +25◦ C. The CO2 and CH4 fluxes showed strong correlations with temperature, moisture, decomposition stage and the type of wood’s rot. The temperature coefficient Q10 indicated higher temperature sensitivity of CO2 flux within the temperature interval from +5 to +15◦ C than from +15 to +25◦ C. Methane flux had higher temperature sensitivity within the interval from +15 to +25◦ C. It was found that, in boreal forests, CWD of early decay stage can serve as a source of methane to the atmosphere when air temperatures increased above +15◦ C. Strong positive correlation between CH4 production and CO2 emission indicated a biological source and supported findings on aerobic origin of the main process contributing to the CH4 flux from decomposing CWD.
KW - Boreal forests
KW - Carbon dioxide and methane emission
KW - Coarse woody debris
KW - Methane production and consumption
KW - Temperature response
UR - http://www.scopus.com/inward/record.url?scp=85106682933&partnerID=8YFLogxK
U2 - 10.3390/f12050624
DO - 10.3390/f12050624
M3 - Article
AN - SCOPUS:85106682933
VL - 12
JO - FORESTS
JF - FORESTS
SN - 1999-4907
IS - 5
M1 - 624
ER -