| Project/Area Number |
19405040
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Agricultural environmental engineering
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| Research Institution | National Institute for Agro-Environmental Sciences |
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Principal Investigator |
YOKOZAWA Masayuki National Institute for Agro-Environmental Sciences, 大気環境研究領域, 上席研究員 (80354124)
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| Co-Investigator(Kenkyū-buntansha) |
KOTERA Akihiko 農業環境技術研究所, 大気環境研究領域, 農環研特別研究員 (10435589)
SAKAMOTO Toshihiro 農業環境技術研究所, 生態系計測研究領域, 研究員 (20354053)
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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 |
¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2008: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2007: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
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| Keywords | 塩水遡上 / 塩害 / 気候変動 / 国際研究者交流 / ベトナム |
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| Research Abstract |
We conducted an integrated evaluation for impacts of sea-level rise and the consequent sea water intrusion on rice production in the Vietnamese Mekong Delta (VMD) in terms of the vulnerability, based on the field survey, historical data analysis and discussion with Vietnamese researchers. As a vulnerability index, we defined the difference between possible cropping period and required one under the available water resources and weather condition. We found the index could indicate the past rice cultivation status. We also made projections on the changes of crop calendar, harvested area and yield based on climate change scenario and changes in river discharge of Mekong river. It is projected that the harvested area would decrease in upstream region and coastal region at flooded year and small rainfall year. In the other regions, however, the increases in harvest area and yield compensate for the decrease. Changes of total cultivation area would be small irrespective of spatial variation, while yield would change largely due to high temperature. Consequently, total production of rice in VMD would decrease by 11% relative to present level.
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