Proxy evaluation of tree-ring oxygen isotopic ratios in Myanmar for paleoclimate reconstruction
| Project/Area Number |
18K11620
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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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| Review Section |
Basic Section 63010:Environmental dynamic analysis-related
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 樹木年輪 / 同位体比 / 同位体 / 酸素同位体比 / 古気候変動 |
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| Outline of Final Research Achievements |
In this study, we measured tree-ring width and cellulose oxygen isotopic ratio of teak samples collected from Myanmar and compared them with meteorological data to comprehensively evaluate their reliability as paleoclimate proxies and to establish a basis for climatic and environmental reconstruction with high temporal resolution in Myanmar. The results suggest that the tree-ring width of teak could be useful as a precipitation indicator during the rainy season, and the oxygen isotopic ratio may have information on the origin of precipitation.
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| Academic Significance and Societal Importance of the Research Achievements |
人口稠密で モンスーンによる降水に依存しているアジアにおいて、過去のモンスーン変動をより詳細に理解することは極めて重要である。このため、近年 樹木年輪による古気候研究が精力的に行われてきたが、政治的に不安定であったミャンマーでは、これらの研究は限られてきた。本研究では、ミャンマーにおけるチークの年輪研究から降水に関する新知見を得られたことで、ミャンマーと広域のモンスーンアジアにおける水文気候の時空変動像の理解深化に資する。
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Report
(4 results)
Research Products
(13 results)
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[Journal Article] Cellulose oxygen isotopic composition of teak (Tectona grandis) collected from Java Island: a tool for dendrochronological and dendroclimatological analysis2018
Author(s)
Hisamochi, R., Watanabe, Y., Sano, M., Nakatsuka, T., Kurita, N., Matsuo-Ueda, M., Yamamoto, H., Tazuru, S., Sugiyama, J., Subiyanto, B., Marsoem, S.N., Tsuda, T., Tagami, T.
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Journal Title
Dendrochronologia
Volume: 52
Pages: 80-86
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] Cellulose oxygen isotopic time series of teak disks collected from Java, Indonesia2020
Author(s)
Watanabe, Y., Hisamochi, R., Sano, M., Nakatsuka, T., Tagami, T.
Organizer
JpGU-AGU Joint Meeting 2020
Related Report
Int'l Joint Research / Invited
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[Presentation] Hydrogen, carbon, and oxygen isotopic variations of tree ring cellulose in Mt. Hiei, Shiga2020
Author(s)
Katayama, Y., Watanabe, Y., Li, Z., Nakatsuka, T.
Organizer
The 5th Asia Research Node Symposium on Humanosphere Science
Related Report
Int'l Joint Research
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[Presentation] Basic research on paleoclimate reconstruction using teak tree-rings collected from Bago Mountains, Myanmar2019
Author(s)
Ohmuro, W., Watanabe, Y., Li, Z., Nakatsuka, T., Takeda, S. and Tagami, T.
Organizer
The 4th Asia Research Node Symposium on Humanosphere Science
Related Report
Int'l Joint Research
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