Spatial Evaluation of Greenhouse Gas Fluxes in a <i>Sasa</i> (Dwarf Bamboo) Invaded Wetland Ecosystem in Central Hokkaido, Japan
To evaluate the effect of vegetation change on greenhouse gas (GHG) budget from a wetland ecosystem, the CO<sub>2</sub>, CH<sub>4</sub> and N<sub>2</sub>O budgets from whole area (21.5 ha) of the Bibai Wetland, where dwarf bamboo (<i>Sasa</i>) or <i...
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MDPI AG
2021-03-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/12/4/448 |
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| author | Akane Kagemoto Fumiaki Takakai Osamu Nagata Masayuki Takada Ryusuke Hatano |
| author_facet | Akane Kagemoto Fumiaki Takakai Osamu Nagata Masayuki Takada Ryusuke Hatano |
| author_sort | Akane Kagemoto |
| collection | DOAJ |
| description | To evaluate the effect of vegetation change on greenhouse gas (GHG) budget from a wetland ecosystem, the CO<sub>2</sub>, CH<sub>4</sub> and N<sub>2</sub>O budgets from whole area (21.5 ha) of the Bibai Wetland, where dwarf bamboo (<i>Sasa</i>) or <i>Ilex</i> has invaded into original <i>Sphagnum</i> dominated vegetation, located in Hokkaido, Japan were estimated. The original <i>Sphagnum</i>-dominated vegetation was changed from a sink to a source of CO<sub>2</sub> by invasion of short-<i>Sasa</i> (50 cm > height), while the invasion of tall-<i>Sasa</i> (50 cm < height < 150 cm) or <i>Ilex</i> increased CO<sub>2</sub> uptake. Annual CH<sub>4</sub> emission was decreased by the invasion of <i>Sasa</i> or <i>Ilex</i>. The annual N<sub>2</sub>O emission was slightly increased by invasion of <i>Ilex</i> only. These GHG budgets were correlated with the environmental factors related to the water table depth. The distribution of vegetation and environmental factors was estimated from satellite image bands, and the GHG budget of the entire wetland was estimated. The whole wetland area was considered to be a sink for GHG (−113 Mg CO<sub>2</sub>-eq y<sup>−1</sup>) and CO<sub>2</sub> uptake by tall-<i>Sasa</i> occupied 71% of the GHG budget. The vegetation change due to the lowering of the water table depth currently increases the rate of carbon accumulation in the ecosystem by about 5 times. |
| first_indexed | 2024-03-10T12:43:54Z |
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| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-10T12:43:54Z |
| publishDate | 2021-03-01 |
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| series | Atmosphere |
| spelling | doaj.art-d9411b84e9bf4bcc9ec5cfd51b801b962023-11-21T13:39:23ZengMDPI AGAtmosphere2073-44332021-03-0112444810.3390/atmos12040448Spatial Evaluation of Greenhouse Gas Fluxes in a <i>Sasa</i> (Dwarf Bamboo) Invaded Wetland Ecosystem in Central Hokkaido, JapanAkane Kagemoto0Fumiaki Takakai1Osamu Nagata2Masayuki Takada3Ryusuke Hatano4Graduate School of Agriculture, Hokkaido University, Hokkaido 060-8589, JapanGraduate School of Agriculture, Hokkaido University, Hokkaido 060-8589, JapanHokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Hokkaido 062-8555, JapanHokkaido Institute of Environmental Sciences, Hokkaido 060-0819, JapanResearch Faculty of Agriculture, Hokkaido University, Hokkaido 060-8589, JapanTo evaluate the effect of vegetation change on greenhouse gas (GHG) budget from a wetland ecosystem, the CO<sub>2</sub>, CH<sub>4</sub> and N<sub>2</sub>O budgets from whole area (21.5 ha) of the Bibai Wetland, where dwarf bamboo (<i>Sasa</i>) or <i>Ilex</i> has invaded into original <i>Sphagnum</i> dominated vegetation, located in Hokkaido, Japan were estimated. The original <i>Sphagnum</i>-dominated vegetation was changed from a sink to a source of CO<sub>2</sub> by invasion of short-<i>Sasa</i> (50 cm > height), while the invasion of tall-<i>Sasa</i> (50 cm < height < 150 cm) or <i>Ilex</i> increased CO<sub>2</sub> uptake. Annual CH<sub>4</sub> emission was decreased by the invasion of <i>Sasa</i> or <i>Ilex</i>. The annual N<sub>2</sub>O emission was slightly increased by invasion of <i>Ilex</i> only. These GHG budgets were correlated with the environmental factors related to the water table depth. The distribution of vegetation and environmental factors was estimated from satellite image bands, and the GHG budget of the entire wetland was estimated. The whole wetland area was considered to be a sink for GHG (−113 Mg CO<sub>2</sub>-eq y<sup>−1</sup>) and CO<sub>2</sub> uptake by tall-<i>Sasa</i> occupied 71% of the GHG budget. The vegetation change due to the lowering of the water table depth currently increases the rate of carbon accumulation in the ecosystem by about 5 times.https://www.mdpi.com/2073-4433/12/4/448closed chamber methodgreenhouse gassatellite image analysisvegetation change |
| spellingShingle | Akane Kagemoto Fumiaki Takakai Osamu Nagata Masayuki Takada Ryusuke Hatano Spatial Evaluation of Greenhouse Gas Fluxes in a <i>Sasa</i> (Dwarf Bamboo) Invaded Wetland Ecosystem in Central Hokkaido, Japan Atmosphere closed chamber method greenhouse gas satellite image analysis vegetation change |
| title | Spatial Evaluation of Greenhouse Gas Fluxes in a <i>Sasa</i> (Dwarf Bamboo) Invaded Wetland Ecosystem in Central Hokkaido, Japan |
| title_full | Spatial Evaluation of Greenhouse Gas Fluxes in a <i>Sasa</i> (Dwarf Bamboo) Invaded Wetland Ecosystem in Central Hokkaido, Japan |
| title_fullStr | Spatial Evaluation of Greenhouse Gas Fluxes in a <i>Sasa</i> (Dwarf Bamboo) Invaded Wetland Ecosystem in Central Hokkaido, Japan |
| title_full_unstemmed | Spatial Evaluation of Greenhouse Gas Fluxes in a <i>Sasa</i> (Dwarf Bamboo) Invaded Wetland Ecosystem in Central Hokkaido, Japan |
| title_short | Spatial Evaluation of Greenhouse Gas Fluxes in a <i>Sasa</i> (Dwarf Bamboo) Invaded Wetland Ecosystem in Central Hokkaido, Japan |
| title_sort | spatial evaluation of greenhouse gas fluxes in a i sasa i dwarf bamboo invaded wetland ecosystem in central hokkaido japan |
| topic | closed chamber method greenhouse gas satellite image analysis vegetation change |
| url | https://www.mdpi.com/2073-4433/12/4/448 |
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