タクバツ ホウシキ ニヨル シラカシ シンタンリン ノ セイサン キコウ ニ カンスル ケンキュウ ダイ10ポウ シモヤマサ コテイ シケンチ ノ ダイ5 ケイリキ ニオケル ゲンゾンリョウ
Studies on the Productive Structure of "Shirakashi" (Cyclobalanopsis Myrsinaefolia OERST.) Coppice-forest Managed by Selection Method(10) : On the Biomass in Fifth Circulation-period at the Shimoyamasa Permanent Plot
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The change of biomass of the coppice forest of "Shirakashi" in fifth cutting cycle(1974-1980）were investigated at the Shimoyamasa permanent plot set up Hirose Cho, Shimane Prefecture in 1959. The forest has been managed by the selection method.
The allometric equations of single tree were calculated by sample trees and the biomass of upper ground in the plot were etimated by these equations. The change processes of biomass in the cutting cycle were shown in Table 3 and Table 5. Thevertical distribution of foliage were shown in Table 4 and Fig.1.
The annual weight increment of growing stock per ha of Shirakashi was 8.6 ton, and that of branch and foliage were 3.2 ton and 0.7ton, respectively.
Shimane University, Faculty of Agriculture