| Project/Area Number |
23658190
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Irrigation, drainage and rural engineering/Rural planning
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| Research Institution | The University of Tokyo |
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Principal Investigator |
IIDA Toshiaki 東京大学, 大学院・農学生命科学研究科, 准教授 (30193139)
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| Co-Investigator(Kenkyū-buntansha) |
OSAWA Kazutoshi 宇都宮大学, 農学部, 准教授 (30376941)
ISHIDA Tomoyasu 宇都宮大学, 理事 (00159740)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 地球温暖化ガス排出削減 / 環境調和型農林水産 / 土壌圏現象 / 農業土木 / 排水改良 / 土地改良事業 / メタン / 温室効果ガス / 農業工学 |
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| Research Abstract |
From the perspective of mitigation of global warming, the quantitative evaluation of the effect of a drainage improvement project on reduction of the methane emission was attempted, taking an example at a region in the command area of Imbanuma land improvement district in Chiba prefecture. The CO2 emission by completion of the drainage improvement project was estimated to be 0.518 t-CO2/(ha・y). The planed maximum water requirement rate was 2 mm/d greater after the project than that before the project. Taking the obtained results by column experiments into account, it was estimated that the 2 mm/d increase in the water requirement rate brought about the methane emission reduction of -0.270～11.9 t-CO2/(ha・y). The results of field experiments suggested that the drainage improvement project leads to methane emission reduction of 4.5 ～ 8.3 t-CO2/(ha・y), which corresponded to the estimation based on the column experiments.
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