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KMID : 0368419790220030059
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Journal of Plant Biology
1979 Volume.22 No. 3 p.59 ~ p.62
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A Study on Standing Crops of Seedling and Sapling in Pinus rigida Forest
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Abstract
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Distribution and standing crops of seedling and sapling as undergrowing tree were investigated in a Pinus rigida forest. The relative light intensity (RLI) on the ground level was 3.9%∼59.3% which indicates a wide range. Under this range of RLI seedlings and saplings distribute well in the stand. Eight trees were selected from the stand, then measured dry weight of stem, branches and leaves using the stratified clip technique.
A possible relationship between the diameter at the bottom of the tree (DO) and standing crops was investigated. As Do increased from 0.8㎝ (T_1) to 7.2㎝ (T_2), the standing crops also increased from 42.6g to7,410.4g. Since semi-Iog values between Do and standing crops clearly indicates a straight line, there is close relationship between these two factors.
Therefore it is possible to estimate the standing crops of seedling and sapling by measuring Do. Productive structure shows that photosynthetic layer is located above the 1/2 height of the tree and maximum photosynthetic layer apperars on 2/3 level in height.
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