- 著者
- 小笠原 繁男 高橋 稔 島 強 佐藤 昭一 倉橋 昭夫
- 出版者
- 北方森林学会
- 雑誌
- 日本林学会北海道支部論文集 (ISSN:09123342)
- 巻号頁・発行日
- no.38, pp.32-34, 1990-03-01
1 0 0 0 OA 日本に自生している針葉樹の耐凍度とそれらの分布との関係
- 著者
- 酒井 昭 倉橋 昭夫
- 出版者
- 日本生態学会
- 雑誌
- 日本生態学会誌 (ISSN:00215007)
- 巻号頁・発行日
- vol.25, no.4, pp.192-200, 1975-12-31
- 被引用文献数
- 5
Dormant one-year-old twigs were collected from the mature and young plants of a number of conifer species cultivated at Yamabe, Hokkaido, and other places during midwinter, these were artificially hardened at sub-freezing temperatures to overcome differences in site of collection and to induce maximum freezing resistance. In most of the species distributed in the sub-alpine and sub-cold zones, the leaves and the twigs resisted freezing to -70℃ or below, while most of the species distributed in the temperate zone resisted freezing to only about -30℃, and the leaves and the twigs were found to be nearly equally hardy unlike the conifers distributed in sub-alpine and sub-cold zones. Also, most of these temperate conifers were observed not to be grown in a severe cold climate in Hokkaido. Thus, in the conifers distributed in the temperate zone, winter minimal temperatures appear to be the principal factor governing their growth in severe cold climates. A marked variation in hardiness was not observed among the pines Pinus denslflora and Pinus thunbergiana from different provenances.