2012 Fiscal Year Final Research Report
Evaluation of drainage improvement and land reclamation projects from the perspective of mitigation of global warming
| 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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| 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 |
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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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[Presentation] Effect of percolation rate on methane emission from paddy soil columns2011
Author(s)
Dei, H., Iida, T., Okajima, K., Noda, K., Kimura, M.
Organizer
PAWEES 2011 International Conference
Place of Presentation
Taipei, Taiwan
Year and Date
2011-10-27
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