| Project/Area Number |
19201008
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental impact assessment/Environmental policy
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| Research Institution | National Agricultural Research Organization |
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Principal Investigator |
HOJITO Masayuki National Agricultural Research Organization, 畜産草地研究所草地多面的機能研究チーム, チーム長 (50355088)
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| Co-Investigator(Kenkyū-buntansha) |
HATANO Ryusuke 北海道大学, 大学院・農学研究科, 教授 (40156344)
MURANO Kentaro 法政大学, 生命科学部・環境応用化学科, 教授 (40109905)
HAYASHI Kentaro 独立行政法人農業環境技術研究所, 物質循環研究領域, 主任研究員 (70370294)
KOHYAMA Kazunori 独立行政法人農業環境技術研究所, 農業環境インベントリーセンター, 上席研究員 (50414503)
OGINO Akifumi 独立行政法人農業・食品産業技術総合研究機構, 畜産草地研究所浄化システム研究チーム, 主任研究員 (70355098)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥42,770,000 (Direct Cost: ¥32,900,000、Indirect Cost: ¥9,870,000)
Fiscal Year 2009: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2008: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
Fiscal Year 2007: ¥23,530,000 (Direct Cost: ¥18,100,000、Indirect Cost: ¥5,430,000)
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| Keywords | 陸圏 / 水圏 / 大気圏影響評価 / 家畜ふん尿 / アンモニア発生係数 / アンモニアフラックス / パッシブサンプラー / フィルターパック法 / 河畔林 / 余剰窒素 / 脱窒 |
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| Research Abstract |
<Emission> The amount of ammonia emission from agriculture was estimated by each sector and shown in km-mesh map. Ammonia flux on arable, paddy and grassland was observed. <Actual situation> Atmospheric ammonia and ammonium concentration was monitored at 27 sites in Japan. Dry and wet deposition was measured in an intensive dairy region in Tochigi prefecture, and showed N flow through ammonia in the region. <Influence> By analyzing river water N concentration and N input in the Shibetsu basin in Hokkaido, it was suggested that a part of N imported into the basin exported through river N but remained N oxidized to NO_3, which accelerate the increasing HCO_3 concentration in the river through denitrification process.
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