Development of hybrid model for a long-term simulation of nitrogen saturation in forested ecosystems
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 |
Research Field |
Forest science
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Research Institution | Kyoto University |
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 |
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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Report
(4 results)
Research Products
(18 results)
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[Journal Article] Estimation of field soil nitrogen mineralization and nitrification rates using soil N transformation parameters obtained through laboratory incubation2017
Author(s)
Urakawa R, Ohte N, Shibata H, Tateno R, Inagaki Y, Oda T, Toda H, Fukuzawa K, Watanabe T, Hishi T, Oyanagi N, Nakata M, Fukushima K, Nakanishi A
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Journal Title
Ecological Research
Volume: 32
Issue: 2
Pages: 279-285
DOI
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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