An empirical formula for the oblique sequence of the annual ring width proposed by Duff and Nolan.

Yoshida T.; Kanemitsu K.

An empirical formula for the oblique sequence of the annual ring width proposed by Duff and Nolan.

1990

Yoshida T. | Kanemitsu K.

The authors composed an empirical formula for the pattern of the oblique sequence of ring width proposed by Duff and Nolan. The formula was a mixed curve of the probability density function of the gamma distribution with an exponential function and fitted to the ring width of Sugi (Cryptomeria japonica) of 76 years old. It was poor fit at the portion where the pattern of the sequence of ring width differed from the probability density function in the tree top and there was poor fitness at the butt where the ring width increased rapidly in that place. Except such cases, the formula seemed to fit the pattern adequately throughout the sequence.

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AGROVOC Keywords

anillo de crecimiento arbre cerne cryptomeria japonica formulaciones formulation formulations growth rings trees

Bibliographic information

Published in

Bulletin of the Nagoya University Forests

ISSN 0469-4708

Pagination

v.45-50

Other Subjects

Arboles

Language

Japanese

Note

6 fig.; 10 ref.; Summaries (En, Ja).

Type

Journal Article; Journal Part; Summary

Source

Bulletin-of-the-Nagoya-University-Forests (Japan). (Mar 1990). (no.10) p. 45-50.

Corporate Author

Tokyo Univ. (Japan). Faculty of Agriculture

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An empirical formula for the oblique sequence of the annual ring width proposed by Duff and Nolan.

1990

AGROVOC Keywords

Bibliographic information