| Project/Area Number |
01560156
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
林学
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| Research Institution | Yamagata University |
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Principal Investigator |
OHTANI Hiroya Yamagata University, Faculty of Agriculture Associate Professor, 農学部, 助教授 (60007226)
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| Co-Investigator(Kenkyū-buntansha) |
TUKAHARA Hatuo Yamagata University, Faculty of Agriculture Professor, 農学部, 教授 (30007083)
SUTO Syouji Yamagata University, Faculty of Agriculture Professor, 農学部, 教授 (10007057)
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| Project Period (FY) |
1989 – 1991
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| Project Status |
Completed (Fiscal Year 1991)
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| Budget Amount *help |
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1991: ¥100,000 (Direct Cost: ¥100,000)
Fiscal Year 1990: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1989: ¥2,000,000 (Direct Cost: ¥2,000,000)
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| Keywords | Snowy region / Sugi plantation / Topographic analysis |
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| Research Abstract |
This investigation deals with the influence of micro-topographic factors on position of trees in Sugi stands. Three experimental plots were set in the planted Sugi forest. located Yamagata University Forest in Yamagata Prefecture. They are 7th. 28th and 60th year old.
in order to analyze sycro-topographic factors near the root of tree. contour saps interval 10cm, were drown.
The results may be summarized as follows :
1. In young stand. growth of tree is rapidly on convex and ridge. It is slowly on lower parts of the slope and concave.
2. In middle ages stand, the length of root bending on concave is longer than the length on convex. There are a good many trees damaged by snow pressure on concave.
3. In every experimental plots, the number of trees survived on convex is more then that on concave. In young stand, that is 38% of whole trees survived. In sidle stand, that is 41%. In old stand. that is 67%.
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