2016 Fiscal Year Final Research Report
Time-course changes in tree hydraulics under the soil desiccation processes in dry dwarf forest in Bonin islands.
| Project/Area Number |
26870833
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Ecology/Environment
Forest science
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| Research Institution | Kyoto University (2016)
Forestry and Forest Products Research Institute (2014-2015) |
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Principal Investigator |
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| Research Collaborator |
ISHIDA Atsushi
Saiki Shintaro
YAZAKI Kenichi
NAKANO Takashi
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | エンボリズム / 非構造性炭素 / 乾燥耐性 / 水利用 |
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| Outline of Final Research Achievements |
We explored tree hydraulics and the mechanism how trees survive under the severe soil desiccation processes in dry dwarf forest in Bonin islands. Xylem embolism proceeded under the soil-drying processes, and simultaneously starch contents in xylem decreased and soluble-sugar contents increased. Such dynamics in non-structural carbohydrates enables recovery in xylem hydraulic conductance after the rainfall events. We also found that stem and branch respiration rates decreased under the soil drying process. We concluded that carbon use process such as respiration and the dynamics in non-structural carbohydrates are important for survival under the drought.
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| Free Research Field |
森林生態学
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