| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
Net CO2 absorption and emission on the surface of the sediment was examined at the north salt marsh of Osaka Nanko bird sanctuary. Gross CO2 absorption was closely related to sediment temperature, chlorophyll a and photon flux density, while CO2 emission changed depending on the sediment temperature and groundwater level. The groundwater level was thought to be indispensable for estimating the CO2 emission from the sediment. They were overestimated when groundwater level was not taken into account. The total CO2 absorption or emission of the north salt marsh was estimated as ca.23 tons for absorption and ca.14 tons for emission in May to September, 2014. These results suggest that a net of 9 tons CO2 was absorbed and this salt marsh plays the role of a CO2 sink in the high temperature season of a year.
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