Optimum planting density for Japanese oak (Quercus mongolica var. grosseserrata) based on spacing experiment with systematic design

Morio Imada, Takashi Kunisaki, Nobuya Mizoue, Yukio Teraoka

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

A spacing experiment for Japanese oak (Quercus mongolica var. grosseserrata) with Nelder's design have been studied at the Kyushu University Forest in Hokkaido, since 1975. The oak seedlings were planted according to systematic spacings which were 20 levels varying gradually from 40,816 to 1,086 seedlings per hectare with concentric circular arcs (22 in number) and spokes (41 in number). In 1992 when the planted oak seedlings were 18-year-old, DBH, crown diameter, total height and clear length of the survival trees were measured. Based on the results obtained from analyzing the relationships between planting density and the mean values of each block, the optimum planting density should be 7,241 seedlings per hectare.

本文言語英語
ページ(範囲)89-93
ページ数5
ジャーナルJournal of Forest Research
2
2
DOI
出版ステータス出版済み - 1 1 1997

All Science Journal Classification (ASJC) codes

  • 林業

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