Bulletin of the Faculty of Agriculture, Shimane University

Faculty of Agriculture, Shimane University

ISSN:0370-940X

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Bulletin of the Faculty of Agriculture, Shimane University 4

1970-12-15 発行

アテ択伐林に関する研究(2) : マアテ択伐林の林分構成と生長量(2)

Studies on the Selection Forest of Ate(Thujopsis dolabrata SIEB. Et ZUCC. Var. hondai MAKINO)(2) : The Stand Structure and the Increment of Maate (a c. v. of Ate) Selection Forest

Yasui, Hitoshi

Narita, Tsunemi

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d0030004n012.pdf 1.36 MB

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Following the previous report, authors have investigated the stand structure of other 3 plot of Maate selection forests in Wajima city, Ishikawa prefecture, in 1968. The results are as follows :
1. Adding data of 3 plots of the first report, the relation between number of trees and D.b.h. is shown as MEYER's formula(y = k・e^<α・x>), and k is relate to α as following equation.
k = -5.82 ＋ 804.6・α
2. Among operations of selection forests, prunning is comparatively important one, and the relation of clear length to D.b.h. is given as NASLUND formula.
3. The range of current annual volume increment among 6 plots is 10.2～15.9m^3.
4. Maate yield table has been prepared since 1969, and maximum value of mean annual volume increment is 7.8m^3 in this table. It seems likely that annual volume increment of selection forest is greater than that of yield table.

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AN00108015

d0030004n012.pdf 1.36 MB

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