| Project/Area Number |
15K14756
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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 |
Forest science
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| Research Institution | Kyoto University |
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Principal Investigator |
Ohte Nobuhito 京都大学, 情報学研究科, 教授 (10233199)
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| Co-Investigator(Kenkyū-buntansha) |
磯部 一夫 東京大学, 大学院農学生命科学研究科(農学部), 助教 (30621833)
小山 里奈 京都大学, 情報学研究科, 准教授 (50378832)
徳地 直子 京都大学, フィールド科学教育研究センター, 教授 (60237071)
Vincenot C.E. 京都大学, 情報学研究科, 助教 (80751908)
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| Research Collaborator |
GIANNINO Francesco フェデリコ2世・ナポリ大学, 農学・獣医学部, 研究員
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 窒素循環 / 窒素飽和 / 窒素流出 / NO3- / モデル / 安定同位体 / 安定同位体比 / 微生物 / 群集動態 |
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| Outline of Final Research Achievements |
In order to understand the time sequential processes of nitrogen (N) saturation under heavy N deposition environment, and to make a long-term prediction of N saturation related phenomena, we developed a simulation model. For this model development, we made the meta-analysis on nitrogen transformation data (mineralization and nitrification) to identify critical controlling factors, which were developed from the nation wide-survey for the forest soils. Based on those data, we developed a numerical simulation model of N cycle dynamics in forest ecosystem using a system dynamics technique. We executed long-term simulations (102 years order), and reproduced the time lag between starting of heavy N deposition and response of the NO3- pool size growth. This time lag was explained by the retention capability with the microbial N recycle mechanisms.
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