| Project/Area Number |
21580189
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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 |
Forest science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
MATSUI Tetsuya 独立行政法人森林総合研究所, 北海道支所, 主任研究員 (20414493)
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| Co-Investigator(Kenkyū-buntansha) |
NAMIKAWA Kanji 北海道教育大学, 教育学部, 教授 (90192244)
ITAYA Akemi 三重大学, 大学院・生物資源学研究科, 准教授 (70447861)
KITAMURA Keiko 独立行政法人森林総合研究所, 北海道支所, 主任研究員 (00343814)
IIDA Shigeo 独立行政法人森林総合研究所, 北海道支所, チーム長 (10370272)
HIRAKAWA Hirofumi 独立行政法人森林総合研究所, 北海道支所, 主任研究員 (30353824)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | ブナ / 北限 / 孤立林 / 鳥散布 / 空中写真 / 遺伝的多様度 / 樹齢 / 遺伝的類縁関係 / 遺伝的浮動 / 種子散布距離 / ヤマガラ / 遺伝的類緑関係 |
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| Research Abstract |
To clarify accurate locations and distributions of isolated natural beech(Fagus crenata Blume) forests at the northernmost boundary of their range, aerial photograph and ground truth were performed. It was found that the number of isolated beech forests were at least nine, and they were the maximum of 4 km apart with each other. These isolated forests were thought to have possibly been established from bird-dispersed beech seeds. Genetic analysis showed that isolated beech forests had higher differentiation and lower genetic diversity ; however, tree ring analyses showed that the beech tree's ages were mostly under 120 years old, suggesting that the beech forests are gradually expanding their range, after occasional events of forest canopy disturbances.
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