| Budget Amount *help |
¥24,310,000 (Direct Cost: ¥18,700,000、Indirect Cost: ¥5,610,000)
Fiscal Year 2018: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2017: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2016: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2015: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
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| Outline of Final Research Achievements |
We investigated the effects of the expansion of Bamboo forest and climate change on flood and drought runoff of forested catchments. As root mass increased, volumetric soil water content at the same soil matric potential decreased. Therefore, we concluded that soil water retention was reduced as the Bamboo forest expanded. Dye tracer experiments demonstrated that water moves through roots and soil cracks, and the dye was observed in the soil from the surface to a depth of 30cm. As climate change and Bamboo forest expansion continue, long wave radiations emitted from trees increase, resulting in earlier snow disappearance than that of current conditions in conjunction with temperature increases.
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