| Project/Area Number |
26650163
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Ecology/Environment
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| Research Institution | Kyoto University |
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Principal Investigator |
KITAJIMA KAORU 京都大学, (連合)農学研究科(研究院), 教授 (40721379)
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| Co-Investigator(Kenkyū-buntansha) |
KITAYAMA KANEHIRO 京都大学, 農学研究科, 教授 (20324684)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 熱帯林樹種 / ケイ素循環 / 植物機能形質 / 森林生態系 / 土壌風化 / 生態系元素循環 / マレーシア / 熱帯低地林 / 熱帯山地林 / 生葉のケイ素濃度 / リターのケイ素濃度 / 物質循環 / 東南アジア / キナバル山 / 土壌ケイ素可給性 |
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| Outline of Final Research Achievements |
In order to understand the mechanism at which natural forests in the tropics sustainably maintain ecosystem processes, we studied the interaction between dominant tree species and silicon, a critically important element in the process of soil weathering, in lowland and mountain forests in Malaysia. We quantified silicon concentrations in live leaves of dominant tree species and leaf litters periodically sampled from litter traps, and also assessed silicon availability in the upper A-horizon soil. The results showed for the first time that silicon cycling via plants is much more active in lowland compared to mountain forests, suggesting that many lowland tree species have evolved silicon uptake and accumulation as their functional traits, which in turn strongly influence soil weathering and mineralogy.
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