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タイトルヨミ
ヒキミ エンシュウリン ニオケル テンネン スギ ノ ケンキュウ 2 テンネン スギ ノ コウシン ニ カンスル ケンキュウ ダイ1ポウ フクジョウ チジュ ノ セイイク ジョウタイ ニツイテ
日本語以外のタイトル
Studies on the natural Sugi in the Shimane Agricultural College Forest of HIKIMI(II) : Study on the regeneration of the natural Sugi(No.1) : On the development and growth of the natural layers
ファイル
言語
日本語
著者
沖村 義人
山根 良夫
小野 正行
内容記述(抄録等)
In the western part of the Chugoku range, natural Sugi trees (Cryptomeria japonica) can generally be found over many of mountains.
To collect data for a study on reproduction of them, the writers made some preliminary investigations in the Shimane Agricultural College Forest of HIKIMI from 1956 to 1960.
Results investigated were as follows :
1. Pure forests of natural Sugi were found growing mainly on the ridge more than 1000 m above the sea.
2. In mixed forests natural Sugi trees were found mostly with some broad-leaved trees, such as Buna, Ryobu, Kaede and Musikari.
3. Generally speaking, the young trees of natural Sugi were found often in the mixed forests than in the pure forests, and on the ridge and the mid-slope than in lower areas.
4. Young trees of Sugi were reproduced by layers, i.e. twigs of mother trees.
5. Layers were very slow in growth under a closed stand ; their mean annual growth measured 2.7~3.6 cm in height and only 0.5~0.8 mm in diameter.
6. The natural Sugi which were cut down in 1960 had been liberated from suppressed condition twice ca. 70 and 40 years ago. And many layers began better growth at those times, but few fell again into suppressed condition after some years and then they recovered their power of growth when next chances was given.
7. The writers found a trend that the layers taller than 1.5 m could recover their power of growth after liberation. Whereas the shorter ones couldn't perhaps because of their suffering from drought due to their shallow and limited root system.
掲載誌名
島根農科大学研究報告
9
開始ページ
(A-2)9-24
ISSN
05598311
発行日
1961-03-31
NCID
AN00108241
出版者
島根農科大学
出版者別表記
The Shimane Agricultural College
資料タイプ
紀要論文
部局
生物資源科学部
備考
A,Bを含む
開学十周年記念号(Commemoration Number for the 10th Anniversary)
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