| Project/Area Number |
23380078
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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 |
Forest science
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| Research Institution | Hokkaido University |
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Principal Investigator |
KOIKE Takayoshi 北海道大学, (連合)農学研究科(研究院), 教授 (10270919)
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| Co-Investigator(Kenkyū-buntansha) |
SANO Yuzo 北海道大学, 大学院・農学研究院, 教授 (90226043)
SATOH Fuyuki 北海道大学, 北方生物圏フィールド科学センター, 教授 (20187230)
SASA Kaichiro 北海道大学, 北方生物圏フィールド科学センター, 教授 (70125318)
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| Co-Investigator(Renkei-kenkyūsha) |
FUNADA Ryo 東京農工大学, 大学院・農学研究院, 教授 (20192734)
CHIBA Yukihiro 森林総合研究所, 拠点長 (90353771)
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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 |
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2013: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2012: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2011: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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| Keywords | 対流圏オゾン / 高CO２ / 複合影響 / 落葉樹 / 気孔コンダクタンス / 光合成 / 補償作用 / 肥大成長 / 二酸化炭素 / 気孔応答 / 成長応答 / 光合成機能 / グイマツ雑種F1 / 葉量減少 / 森林衰退 / カンバ類 / ダウンレギュレーション / 気孔閉鎖 / 開放系施設 / 二酸化炭素濃度 |
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| Research Abstract |
With use of open top chambers, the diameter growth of hybrid larch F1 (Larix gmelinii x L. kaempfrei) was suppressed by high O3 (60 ppb, 7 hours in day) which is mainly due to decrease of dry-mass needles and fine roots. At high CO2 (600 ppm, day), the growth of F1 and its parents was increased and the O3-induced depression was moderated. However, recovery of O3-induced decrease of F1 was not simply explained by stomatal closores by high CO2. Relative growth rate of young beech (Fagus crenata) trees was about 25 % suppressed by 60 ppb with free-air O3 fumigation, by contract no decrease in the same age of oak (Quercus mongolica var. crispula) trees was found.
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