| Budget Amount *help |
¥27,950,000 (Direct Cost: ¥21,500,000、Indirect Cost: ¥6,450,000)
Fiscal Year 2013: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2012: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Fiscal Year 2011: ¥13,780,000 (Direct Cost: ¥10,600,000、Indirect Cost: ¥3,180,000)
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| Research Abstract |
Methane flux was measured over a temperate forest using the micrometeorological and chamber methods. The micrometeorological method has an advantage to quantify spatially representative flux, whereas the chamber methods can be used for understanding processes. More than two-year continuous measurements showed that the forest acted as a methane sink, and the sink was greater in summer than winter. The annual methane sink was 868 mg CH4 m-2 yr-1. The methane fluxes were controlled by soil water content and soil temperature, where increase in soil water content restricted the methane sink whereas increase in soil temperature enhanced the methane sink.
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