| Project/Area Number |
60440014
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| Research Category |
Grant-in-Aid for General Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
林学
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| Research Institution | UNIVERSITY OF TOKYO |
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Principal Investigator |
TACHIBANA Kanji (1987) FACULTY OF AGRICULTURE, UNIVERSITY OF TOKYO, 農学部, 教授 (70011822)
山口 伊佐夫 (1985-1986) 東大, 農学部, 教授 (30011836)
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| Co-Investigator(Kenkyū-buntansha) |
TOSHIO HAMAYA FACULTY OF AGRICULTURE, UNIVERSITY OF TOKYO, 農学部, 教授 (10011933)
YASUSHI MINAMIKATA FACULTY OF AGRICULTURE, UNIVERSITY OF TOKYO, 農学部, 教授 (00011841)
SATOHIKO SASAKI FACULTY OF AGRICULTURE, UNIVERSITY OF TOKYO, 農学部, 教授 (20196158)
YASUNORI FUKUSHIMA FACULTY OF AGRICULTURE, UNIVERSITY OF TOKYO, 農学部, 教授 (70003746)
HIDEJIRO NAGUMO FACULTY OF AGRICULTURE, UNIVERSITY OF TOKYO, 農学部, 教授 (30023401)
渡辺 定元 東京大学, 農学部, 教授 (30182918)
立花 観二 東京大学, 農学部, 教授 (70011822)
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| Project Period (FY) |
1985 – 1987
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| Project Status |
Completed (Fiscal Year 1987)
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| Budget Amount *help |
¥8,500,000 (Direct Cost: ¥8,500,000)
Fiscal Year 1987: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1986: ¥6,000,000 (Direct Cost: ¥6,000,000)
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| Keywords | management programs / advance seedlings and saplings / snow blight / Armillaria root rot / stand density / stand structure / regeneration / uniformity of runoff / suitable area for wood harvesting management / discontinuos evolution / off-road vehicle / Abies sachalinensis / Cinara todocola / 亜寒帯針葉樹林 / 林分施業法 / 森林環境基礎情報 / 量水試験 / 亜寒帯 / 風倒木 / 森林形成 / 森林災害 / 森林公共性 |
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| Research Abstract |
Through the comprehensive research on the recovering process of the forest damaged by typhoon No.15 in 1981 at Tokyo University Forest in Hokkaido, the regeneration process of sub-frigid coniferous forest was analyses and the advisable silvicultural management system was proposed. The results obtained are as follows : (1)The special management programs were set up for logging and regeneration in the damaged forest. (2)The surviving blown down broad-leaved tress would play an important role in the process of secondary succession. (3)A succession of microflora on fallen trees would also play an important role in natural regeneration of conifers. (4)The diameter distribution curve at the climax stage of natural forests was derived from the diameter transition probability matrix. (5)The vegetation, regeneration of trees, and soil properties on Mt. Dairoku showed distinct changes according to altitude. (6)The wind damage will be a turning point to adopt the positive course at the planning on the working system of the University Forest. (7)Uniformity of runoff was related to the ratio of non-damaged forest to the whole basin area. (8)A considerable improvement may be made in timber harvesting system by mechanizing the logging operation in Hokkaido. (9)The measuring system of vehicle's behavior was developed for investigating off-road vehicles. (10)The todo-fir aphid population was able to be controlled through the management of distance between the host tress. (11)Landform and vegetation grid cell data were gathered for the forest landscape planning.
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