Understanding spatio-temporal methane exchange between forests and the atmosphere based on high precision measurements
| Project/Area Number |
26701002
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
Ueyama Masahito 大阪府立大学, 生命環境科学研究科(系), 准教授 (60508373)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥24,830,000 (Direct Cost: ¥19,100,000、Indirect Cost: ¥5,730,000)
Fiscal Year 2016: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2015: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2014: ¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
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| Keywords | メタン収支 / 森林 / 微気象学的手法 / チャンバー法 / レーザー分光計 / メタン交換量 / 生態系スケール / 簡易渦集積法 / 渦相関法 / 湿原 / 温室効果ガス / 気候変動 / メタンフラックス / 微気象 / チャンバー / ネットワーク |
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| Outline of Final Research Achievements |
Ecosystem-scale CH4 exchange between forest and the atmosphere was measured using the hyperbolic relaxed eddy accumulation method with the automated closed chamber measurement. The measurements were conducted at three temperate forests and one sub-arctic forest. We found that three of the four forests acted as net CH4 source at the annual timescale. The sources could be contributed by sporadically located hotspot emissions within the flux footprint. Our findings suggest that previous CH4 sink at global upland forests are overestimated; thus, revisiting CH4 budget at forest ecosystems are required. Our system combining the micrometeorological and chamber methods are useful for understanding CH4 budget at the point to ecosystem scales.
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Report
(4 results)
Research Products
(26 results)
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[Presentation] Observations and modeling of methane flux in northern wetlands2016
Author(s)
Futakuchi, Y., Ueyama, M., Matsumoto, Y., Yazaki, T., Hirano, T., Kominami, Y., Harazono, Y., Igarashi, Y.
Organizer
AGU Fall meeting
Place of Presentation
San Francisco USA
Year and Date
2016-12-12
Related Report
Int'l Joint Research
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[Presentation] Greenhouse gas fluxes at boreal and Arctic wetland in Alaska.2016
Author(s)
Ueyama, M., Iwata, H., Nagano, H., Ichii, K., and Harazono, Y.
Organizer
15th International PEAT Congress 2016
Place of Presentation
Kuching, Sarawak, Malaysia
Year and Date
2016-08-15
Related Report
Int'l Joint Research / Invited
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[Presentation] Methane exchange in a poorly-drained black spruce forest over permafrost observed with the eddy covariance technique2015
Author(s)
Iwata, H., Harazono, Y., Ueyama, M., Sakabe, A., Nagano, H., Kosugi, Y., Takahashi, K., and Kim, Y.
Organizer
Fourth International Symposium on the Arctic Research
Place of Presentation
富山国際会議場, Ｔｏｙａｍａ， Ｊａｐａｎ
Year and Date
2015-04-27
Related Report
Int'l Joint Research
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