| Project/Area Number |
24657016
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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 | Gifu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
FUJITAKE Nobuhide 神戸大学, (連合)農学研究科(研究院), 教授 (50243332)
金城 和俊 琉球大学, 農学部, 准教授 (30582035)
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| Co-Investigator(Renkei-kenkyūsha) |
KINJO Kazutoshi 琉球大学, 農学部, 准教授 (30582035)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | マングローブ林 / 土壌圏炭素 / 炭素蓄積 / 溶存有機物 / 純一次生産量 / 微生物呼吸量 / 生態系純生産量 / 溶存有機炭素 / 腐植 / 炭素循環 |
|---|
| Outline of Final Research Achievements |
To reveal the dynamics of soil organic matter, we conducted the study of ecosystem ecology and soil organic chemistry in a mangrove forest on an estuary of the Fukido River, Ishigaki Island, southern Japan. Almost aboveground fine litter flowed away from the mangrove forest due to the ebb tide, but belowground fine litter (necromass of fine root) was higher in the deep soil. Heterotrophic respiration is rather high because of CO2 fluxes from water surface at high tide and CWD decomposition at low tide. Concentrations of humic substances (HS) in the headwaters of Fukido River are higher than other river water, and HS was absorbed by mangrove soil due to high salinity. These data suggested that high fine root production/decomposition and DOC (HS) input from terrestrial evergreen forest through the river is important for soil accumulation in mangrove forests.
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