森林構成の推移予測手良沢山演習林を対象にした試算

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We applied the theory named "Quantitative Control of Forestry management"1) to Terasawayama, university forest of Shinshu Univ. Outline of the method and the result are summarilized as follows. [method] (1) In Terasawayama, about 220 ha. areas, wooden production is continuously performed. (2) We assumed the following model of transition about forest-constitution that is described the preceding report. 2) (3) We divided the forest to 5 units acording to the kind of trees. (4) As the fundamental data of the model, we prepared for the forest growth prediction table, the table of average cutting age, the table of reciprocation ratio in species. They are shown in table-3, 4, 5. (5) As the patterns of harvesting volume of wood, we prepared 22 cases. They are shown in table-9. [result] (1) 5 patterns of harvesting are unadequate but another 17 patterns are adequate. They are shown in pic-3. (2) Transition of total volume of wood, total growth, total volume which is capable of harvesting., total area of harvesting, total amount of labor are hown in pic-4, 5, 6, 7, 8. (3) We tried detail analysis about 14th pattern. Detail structure about forest age, volume, growth, species and others are shown in pic-9,10,11,12,13,14,15,16,17,18. (4) About these results, we minded to add some intention as a forest manager and again simulated transition about forest-constitution. The results are shown in pic-19, 20, 21, 22.
信州大学農学部の論文