Impacts of stump harvesting on carbon dioxide, methane and nitrous oxide fluxes
During 2010-2013, we investigated the effects of stump harvesting on greenhouse gas (GHG) fluxes of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) with the flux-gradient technique at four experimental plots in a hemiboreal forest in Sweden. All plots were clear-cut and soil scarified an...
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| Format: | Article |
| Language: | English |
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Italian Society of Silviculture and Forest Ecology (SISEF)
2022-06-01
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| Series: | iForest - Biogeosciences and Forestry |
| Subjects: | |
| Online Access: | https://iforest.sisef.org/contents/?id=ifor4086-015 |
| _version_ | 1811338554089930752 |
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| author | Vestin P Mölder M Kljun N Cai Z Hasan A Holst J Klemedtsson L Lindroth A |
| author_facet | Vestin P Mölder M Kljun N Cai Z Hasan A Holst J Klemedtsson L Lindroth A |
| author_sort | Vestin P |
| collection | DOAJ |
| description | During 2010-2013, we investigated the effects of stump harvesting on greenhouse gas (GHG) fluxes of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) with the flux-gradient technique at four experimental plots in a hemiboreal forest in Sweden. All plots were clear-cut and soil scarified and two of the plots were additionally stump harvested. The two clear-cut plots served as control plots. Due to differences in topography, we had one wetter and one drier plot of each treatment. All plots exhibited substantial emissions of GHGs and we noted significant effects of wetness on CO2, CH4 and N2O fluxes within treatments and significant effects of stump harvesting on CO2 and N2O fluxes at the dry plots. The CO2 emissions were lower at the dry stump harvested plot than at the dry control, but when estimated emissions from the removed stumps were added, total CO2 emissions were higher at the stump harvested plot, indicating a small enhancement of soil respiration. In addition, we noted significant emissions of N2O at this plot. At the wet plots, CO2 emissions were higher at the stump harvested plot, also suggesting a treatment effect but differences in wetness and vegetation cover at these plots make this effect more uncertain. At the wet plots, we noted sustained periods (weeks to months) of net N2O uptake. During the year with simultaneous measurements of the abovementioned GHGs, GHG budgets were 1.224×103 and 1.442×103 gm-2 of CO2-equivalents at the wet and dry stump harvested plots, respectively, and 1.070×103 and 1.696×103 gm-2 of CO2-equivalents at the wet and dry control plots, respectively. CO2 fluxes dominated GHG budgets at all plots but N2O contributed with 17% at the dry stump harvested plot. For the full period 2010-2013, total carbon (CO2+CH4) budgets were 4.301×103 and 4.114×103 g m-2 of CO2-eqvivalents at the wet and dry stump harvest plots, respectively and 4.107×103 and 5.274×103 gm-2 of CO2-equivalents at the wet and dry control plots, respectively. Our results support recent studies suggesting that stump harvesting does not result in substantial increase in CO2 emissions but uncertainties regarding GHG fluxes (especially N2O) remain and more long-term measurements are needed before robust conclusions can be drawn. |
| first_indexed | 2024-04-13T18:12:36Z |
| format | Article |
| id | doaj.art-eb4481718cae4ae58a31bfe622f17174 |
| institution | Directory Open Access Journal |
| issn | 1971-7458 |
| language | English |
| last_indexed | 2024-04-13T18:12:36Z |
| publishDate | 2022-06-01 |
| publisher | Italian Society of Silviculture and Forest Ecology (SISEF) |
| record_format | Article |
| series | iForest - Biogeosciences and Forestry |
| spelling | doaj.art-eb4481718cae4ae58a31bfe622f171742022-12-22T02:35:49ZengItalian Society of Silviculture and Forest Ecology (SISEF)iForest - Biogeosciences and Forestry1971-74582022-06-0115114816210.3832/ifor4086-0154086Impacts of stump harvesting on carbon dioxide, methane and nitrous oxide fluxesVestin P0Mölder M1Kljun N2Cai Z3Hasan A4Holst J5Klemedtsson L6Lindroth A7Department of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, 223 62 Lund - SwedenDepartment of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, 223 62 Lund - SwedenCentre for Environmental and Climate Science, Lund University, Sölvegatan 37, 22362, Lund - SwedenDepartment of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, 223 62 Lund - SwedenDepartment of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, 223 62 Lund - SwedenDepartment of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, 223 62 Lund - SwedenDepartment of Earth Sciences, University of Gothenburg, Guldhedsgatan 5a, 405 30 Gothenburg - SwedenDepartment of Physical Geography and Ecosystem Science, Lund University, Sölvegatan 12, 223 62 Lund - SwedenDuring 2010-2013, we investigated the effects of stump harvesting on greenhouse gas (GHG) fluxes of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) with the flux-gradient technique at four experimental plots in a hemiboreal forest in Sweden. All plots were clear-cut and soil scarified and two of the plots were additionally stump harvested. The two clear-cut plots served as control plots. Due to differences in topography, we had one wetter and one drier plot of each treatment. All plots exhibited substantial emissions of GHGs and we noted significant effects of wetness on CO2, CH4 and N2O fluxes within treatments and significant effects of stump harvesting on CO2 and N2O fluxes at the dry plots. The CO2 emissions were lower at the dry stump harvested plot than at the dry control, but when estimated emissions from the removed stumps were added, total CO2 emissions were higher at the stump harvested plot, indicating a small enhancement of soil respiration. In addition, we noted significant emissions of N2O at this plot. At the wet plots, CO2 emissions were higher at the stump harvested plot, also suggesting a treatment effect but differences in wetness and vegetation cover at these plots make this effect more uncertain. At the wet plots, we noted sustained periods (weeks to months) of net N2O uptake. During the year with simultaneous measurements of the abovementioned GHGs, GHG budgets were 1.224×103 and 1.442×103 gm-2 of CO2-equivalents at the wet and dry stump harvested plots, respectively, and 1.070×103 and 1.696×103 gm-2 of CO2-equivalents at the wet and dry control plots, respectively. CO2 fluxes dominated GHG budgets at all plots but N2O contributed with 17% at the dry stump harvested plot. For the full period 2010-2013, total carbon (CO2+CH4) budgets were 4.301×103 and 4.114×103 g m-2 of CO2-eqvivalents at the wet and dry stump harvest plots, respectively and 4.107×103 and 5.274×103 gm-2 of CO2-equivalents at the wet and dry control plots, respectively. Our results support recent studies suggesting that stump harvesting does not result in substantial increase in CO2 emissions but uncertainties regarding GHG fluxes (especially N2O) remain and more long-term measurements are needed before robust conclusions can be drawn.https://iforest.sisef.org/contents/?id=ifor4086-015CO2CH4N2OGreenhouse Gas BudgetStump HarvestingClimate Change Mitigation |
| spellingShingle | Vestin P Mölder M Kljun N Cai Z Hasan A Holst J Klemedtsson L Lindroth A Impacts of stump harvesting on carbon dioxide, methane and nitrous oxide fluxes iForest - Biogeosciences and Forestry CO2 CH4 N2O Greenhouse Gas Budget Stump Harvesting Climate Change Mitigation |
| title | Impacts of stump harvesting on carbon dioxide, methane and nitrous oxide fluxes |
| title_full | Impacts of stump harvesting on carbon dioxide, methane and nitrous oxide fluxes |
| title_fullStr | Impacts of stump harvesting on carbon dioxide, methane and nitrous oxide fluxes |
| title_full_unstemmed | Impacts of stump harvesting on carbon dioxide, methane and nitrous oxide fluxes |
| title_short | Impacts of stump harvesting on carbon dioxide, methane and nitrous oxide fluxes |
| title_sort | impacts of stump harvesting on carbon dioxide methane and nitrous oxide fluxes |
| topic | CO2 CH4 N2O Greenhouse Gas Budget Stump Harvesting Climate Change Mitigation |
| url | https://iforest.sisef.org/contents/?id=ifor4086-015 |
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