| Project/Area Number |
08408019
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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 dynamic analysis
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| Research Institution | University of Tsukuba |
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Principal Investigator |
OIKAWA Takehisa INST. BIOL. SCI., UNIVERSITY OFTSUKUBA, PROFESSOR, 生物科学系, 教授 (70011682)
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| Co-Investigator(Kenkyū-buntansha) |
SAIGUSA Nobuko INST. RESOURCES & ENVIRON. TECHNOLOGY, RESEARCHER, 環境影響予測部, 研究員 (00251017)
TAMURA Kenji INST. APPL. BIOL. SCI., UNIVERSITY OFTSUKUBA, ASSOCIATE PROFESSOR, 応用生物化学系, 助教授 (70211373)
寺島 一郎 筑波大学, 生物科学系, 助教授 (40211388)
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| Project Period (FY) |
1996 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥42,000,000 (Direct Cost: ¥42,000,000)
Fiscal Year 1999: ¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 1998: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1997: ¥13,400,000 (Direct Cost: ¥13,400,000)
Fiscal Year 1996: ¥21,200,000 (Direct Cost: ¥21,200,000)
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| Keywords | GLOBAL WARMING / EFFECT ON PLANTS / HIGH CO2 LEVEL / INTERSPECIFIC COMPETITION / TGC / CTGC / 植物影響 / TGC / CTGC / 気孔密度 / CO_2フラックス / 地表面湿潤度 / ガス交換法 / チトクロム経路 / シアン耐性経路 / 森林土壌O層 / 呼吸速度 |
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| Research Abstract |
We established a satisfactory controlling system which can regulate air temperature and CO2 concentration with a high accuracy in the Temperature-Gadient Chamber (TGC) and CO2-Temperature Gradient Chamber (CTGC), newly built four years before on the Environmental Research Center (ERC), University of Tsukuba.
Using the TGC and the CTGC, we investigated the effects of global warming on growth of plants. In this year, we used one of evergreen broad-leaved tree species, Castanopsis cuspidate var. sieboldii and two commonly co existing weeds distributed widely in the world, Imperata cylindrica (C4) and Festucca arundinacea (C3), both belonging to family Gramineae. Growth of I. cylindrica plants was considerably promoted at the expense of F. arundinacea shoots during summer. This result clearly exemplifies that global warming will be favorable for C4 plants rather than C3 plants, and thus will bring about a rapid change in species composition of a C3 and C4 mixed grassland.
We issued the report which summarized major results obtained during these four years using the TGC and the CTGC.
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