2001 Fiscal Year Final Research Report Summary
Vegetation dynamics and environmental variation in Kamchatka
| Project/Area Number |
11691166
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
生態
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| Research Institution | Hokkaido University |
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Principal Investigator |
HARA Toshihiko Hokkaido Univ., Inst. of Low Temp. Sci., Prof., 低温科学研究所, 教授 (80183094)
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| Co-Investigator(Kenkyū-buntansha) |
SONE Toshio Hokkaido Univ., Inst. of Low Temp. Sci., Inst., 低温科学研究所, 助手 (10222077)
SHIRAIWA Takayuki Hokkaido Univ., Inst. of Low Temp. Sci., Inst., 低温科学研究所, 助手 (90235739)
SUMIDA Akihiro Hokkaido Univ., Inst. of Low Temp. Sci., Asso. Prof., 低温科学研究所, 助教授 (50293551)
YAMAGATA Kotaro Joetsu Univ., Inst., 地理, 助手 (80239855)
HOMMA Kosuke Niigata Univ., Fac. of Agr., Lec., 農学部, 講師 (50323960)
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| Project Period (FY) |
1999 – 2001
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| Keywords | Kamchatka / Betula ermanii / Picea ajanensis / forest dynamics / climate change / forest fire / Koryto glacier |
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| Research Abstract |
We established several permanent plots of 1 ha for studying forest dynamics in Kamchatka. We carried out measurements of tree sizes (stem diameter, tree height), positions in the plots and physical environments such as light intensity and temperature. Picea seedlings established under the tree crown but not in gaps. Therefore, gap regeneration dynamics, which is a well known phenomenon in temperate and tropical forests, does not work in the forests of Kamchatka. This is a new phenomenon we found in Kamchatka. We hypothesize that this is because of severe environments such as high light stress, low temperature, low precipitation, in Kamchatka. We also carried out investigations in the Koryto glacier for reconstructing past climate change (temperature, precipitation) in Kamchatka for comparison with forest dynamics. We found that forest fire occurs more frequently in years with lower precipitation. Effects of forest fires on forest dynamics and climate change have also bee investigated by using simulation models.
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