2007 Fiscal Year Final Research Report Summary
Investigation on recent tendency of frequent large forest fires and development of analysis method for fire behavior using hot spot data
| Project/Area Number |
18510001
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Hokkaido University |
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Principal Investigator |
HAYASAKA Hiroshi Hokkaido University, Grad. School of Eng., Associate Professor (40142195)
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| Project Period (FY) |
2006 – 2007
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| Keywords | Large-scale forest fires / Hotspot / Climate change / Boreal forest / Peat fire / Tropical swamp forest / International information exchange / USA: Russia (Sakha): Indonesia: Mongolia |
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| Research Abstract |
In this research, recent wildfire activity in Alaska, Sakha (Siberia), Mongolia, and Indonesia was characterized by considering recent weather conditions during a period of rapid climate change. Forest fire data from various government forest agencies, hotspot data obtained from satellite, and weather records were analyzed to clarify the relationship between fire activity and weather. Results showed that level of wildfire activity in all four locations was strongly affected by lower precipitation and increased temperatures. Thus, weather conditions coincident with rapid climate change may allow occurrence of large-scale fires and create a positive feedback loop to climate warming by the release of greenhouse gasses from forest fires. It is notable that increased temperature and lower precipitation led to increases in wildfire in four widely different ecosystems from the boreal to the tropical. Wildland fires in boreal and tropical forests are important as potential carbon sources because they accumulate large amounts of carbon in their forest floors and emit large amounts of not only carbon oxide (CO_2) but also other greenhouse gases such as methane (CH_4) after large-scale fires and clear cuttings. Recent large-scale wildland fires in these four regions should be considered one of the most important ecological disasters mainly caused by human activity or man-made climate change. Analysis of the four regions and level of wildfire activity under rapid climate condition are done by using newly developed analysis method for fire behavior using hot spot data.
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[Presentation] 大規模森林火災発生と環境設計2007
Author(s)
早坂 洋史
Organizer
日本設計工学会平成19年度秋季大会研究発表講演会
Place of Presentation
北海道工業大学、札幌
Year and Date
20070928-29
Description
「研究成果報告書概要(和文)」より
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[Presentation] 森林火災現場での伝熱と燃焼2006
Author(s)
早坂 洋史
Organizer
第43回日本伝熱シンポジウム
Place of Presentation
名古屋国際会議場,名古屋
Year and Date
20060531-0601
Description
「研究成果報告書概要(和文)」より
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