| Project/Area Number |
23380140
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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 | Mie University |
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Principal Investigator |
TORIDE Nobuo 三重大学, 生物資源学研究科, 教授 (70212074)
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| Co-Investigator(Kenkyū-buntansha) |
WATANABE Kunio 三重大学, 大学院・生物資源学研究科, 准教授 (10335151)
SAITO Hirotaka 東京農工大学, (連合)農学研究科(研究院), 准教授 (70447514)
SAKAI Masaru 三重大学, 大学院・生物資源学研究科, 講師 (70608934)
HASHIMOTO Yohei 東京農工大学, 生物資源学研究科, 准教授 (80436899)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥19,890,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥4,590,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2011: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000)
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| Keywords | 土壌圏 / 窒素循環 / 炭素循環 / 水循環 / 不飽和水分移動 / 有機化 / 無機化 / シミュレーション |
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| Research Abstract |
In order to predict the fate and transport of nitrogen in soils as a result of decomposition of organic matter, we implemented a coupled carbon and nitrogen cycling model based on the LEACHM code using the PHREEQC program. The carbon and nitrogen cycling model described with PHREEQC was linked with HYDRUS-1D using the HP1 code. Various nitrogen transport scenarios could be demonstrated for the application of organic matter to a variable-saturated soil under nonisothermal conditions. Furthermore, oxidation-reduction potential and dissolved oxygen were monitored in a ponded saturated paddy soil column to observe the formation of the surface oxidation layer and the reduced layer.
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