| Project/Area Number |
19780118
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
林学・森林工学
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| Research Institution | Kyushu University |
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Principal Investigator |
HISHI Takuo Kyushu University, 農学研究院, 助教 (50423009)
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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 |
¥2,630,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥1,200,000 (Direct Cost: ¥1,200,000)
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| Keywords | 細根系 / 形態 / 菌根 / 養分獲得戦略 / 細根 / 土壌環境 / 菌根菌 / 土壌動物 / 物質循環 / 形態的可塑性 / fine root architecture / competition for soil resources / gradient in soil nutrient / plasticity / topological index / Acer / ecological niche / Ashoro Research Forest |
|---|
| Research Abstract |
We hypothesized some strategies of tree species to acquire soil resources according to results of responses of fine root morphology to various soil conditions, especially in stand ageing effects and in effects of soil organisms communities. In old stand of Cryptomeria japonica, branching ratio, mortality of apical roots, and mycorrhizal infection increased. In a Chamaecyparis obtusa stand, under depressing mycophagous microarthropods, spores of saprotrophic fungi increased and mycorrhizal infection rate decreased, moreover, fine root biomass increased and SRL decreased. My studies proved evaluation of the responses of tree species for soil conditions with the methods of plasticity of fine root morphology.
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