| Budget Amount *help |
¥25,740,000 (Direct Cost: ¥19,800,000、Indirect Cost: ¥5,940,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
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| Outline of Final Research Achievements |
We clarified the detailed control mechanisms of methane emission from a lake by conducting a continuous observation of emission with the eddy covariance technique. To achieve this goal, we developed a new technique to separate the total methane emission observed with the eddy covariance technique into diffusive and bubble emissions. By applying this technique, we evaluated especially the diurnal variability of methane emission. In addition, we showed that the seasonal variation of methane emission can be simulated by using determined parameters related to methane dynamics in a lake model based on methane production/oxidation incubation experiments.
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