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At present, KARAMATSU (Larix leptolepis Gord.) is mainly planted in the regeneration areas of the clear cutting in alternate blocks system (as concerned the diseriptions of this working system see "In...oue, Y and Noda, T : Foundation and Application of the Clear-cutting in Alternate Blocks System, The Reports of the Kyusyu University Forests, No. 1 1953" and "Kakihara, M : On Practical Results during Twenty Years of the Clear-cutting in Alternate Blocks System, The Bulletin of the Kyusyu University Forests, No. 47 1973"). In order to make this working system succeed it is necessary that working of KARAMATSU forests will be carried out practically in this way. From the above view-point, the author studied the relations between the clear-cutting in alternate blocks system and the working method of KARAMATSU forests. The results obtained are as follows. 1. In order to make KARAMATSU forests into the single tree working forests in future, the working aim of KARAMATSU forests and of the clear-cutting in alternate blocks system are same. 2. Judging from the total height growing process of KARAMATSU, it is forecasted that the maximum volume rotation is 40 years and the technological final cutting age is 60 to 80 years. 3. When we plan to make the regulation period into the difference of the technological final cutting age and the maximum volume rotation, the working system of KARAMATSU forests agree with that of the clear-cutting in alternate blocks system. 4. From the above results, if KARAMATSU is mainly planted in the regulation period, it is possible to attain the purpose of the clear-cutting in alternate blocks system.続きを見る
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I はしがき II 施業体系からみた交互区画皆伐作業法の問題点 III 施業の目標とする森林 IV カラマツ林施業と交互区画皆伐作業法 V あとがき 参考文献 Resume
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Mendeley出力
KJ00005470566