| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Outline of Final Research Achievements |
I investigated sediment resuspension of rice paddy soil driven by raindrops and wind as external force, suspended sediment movement, and measures to reduce suspended sediment runoff from paddy fields. The following conclusions are obtained. (1) When the paddy water depth is shallow during rain events, paddy soil is resuspended by the impact that raindrops collide with the water surface. (2) Paddy field water near levees tends to be suspended during rain events. (3) The amount of suspended sediment runoff on the non-vegetated levees is more than that on the vegetated levees. (4) The runoff mitigation efforts on the paddy fields results in a reduction of suspended sediment runoff.
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