| Project/Area Number |
23580215
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Forest science
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| Research Institution | Hokkaido Research Organization |
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Principal Investigator |
MASAKA Kazuhiko 地方独立行政法人北海道立総合研究機構, 森林研究本部林業試験場, 主査 (60414273)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | クロマツ / 水ストレス / 衰退 / 生理生態 / 針葉 / 国際情報交換 / 多角的評価 / 海岸林 |
|---|
| Research Abstract |
We compared leaf transpiration rate, leaf nitrogen contents and leaf delta 13C of Pinus thunbergii saplings among flooding, drought and control treatment to evaluate the tolerance to strong water stress.
Leaf delta 13C of drought treatment was singficantly higher than that of control. It implies that stamata tended to be closed not to lose water from needles. On the other hand, leaf transpiration rate of flooding treatment was significantly higher than that of control, and no significant difference was observed in leaf delta 13C. Besides, many saplings died in flooding treatment. Saplings in flooding treatment declined by loss of water due to open stamata, although the saplings sufferred strong water stress.
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