| Project/Area Number |
22380127
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Irrigation, drainage and rural engineering/Rural planning
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| Research Institution | Niigata University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
INOUE Mitsuhiro 鳥取大学, 乾燥地研究センター, その他 (90032309)
TAKESHITA Yuji 岡山大学, 環境生命科学研究科, 教授 (90188178)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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| Keywords | キャピラリー・バリア / 土の不飽和水分特性 / 雨水資源の保全 / 浸潤水 / 限界長 / 塩類集積 / 廃棄物貯蔵 / 節水かんがい / 塩分集積 / 圃場実験 / 植栽実験 / 雨水ハーベスティング / 半乾燥地 / 農業工学 / 環境技術 / キヤピラリー・バリア |
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| Research Abstract |
Capillary barrier (CB) is a simple soil layer system which is composed of sand layer underlain by gravel layer. As water infiltrating from soil surface is retained above an interface between the soil layers, agricultural plants can easily utilize it for their growth. In the case of tilted interface, water retained flows downward along the interface, with the result that deeper soils under the interface can well avoid being infiltrated by soil water. In this study, an applicability of the CB system into an effective water use in agricultural irrigation and a soil water diversion were investigated through a series of field experiments. The study revealed that the CB system provides excellent performance of water harvesting and salinization prevention in soil, and is adaptable to an isolation facility of a hazardous waste material or a very low level radioactive waste.
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