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  1. B300 農学部/生命農学研究科
  2. B300b 紀要
  3. 名古屋大学森林科学研究
  4. 19

Seasonal change in tangential strain on the inner bark in white birch (Betula platyphylla var. japonica)

https://doi.org/10.18999/nagufs.19.21
https://doi.org/10.18999/nagufs.19.21
4a7174c4-423d-4488-b393-60d34c9279a5
名前 / ファイル ライセンス アクション
nagufs_19_21.pdf nagufs_19_21.pdf (956.9 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2007-07-09
タイトル
タイトル Seasonal change in tangential strain on the inner bark in white birch (Betula platyphylla var. japonica)
言語 en
その他のタイトル
その他のタイトル シラカンバ内樹皮における接線方向ひずみの季節変動
言語 ja
著者 YOSHIDA, Masato

× YOSHIDA, Masato

WEKO 17993

en YOSHIDA, Masato

Search repository
吉田, 正人

× 吉田, 正人

WEKO 17994

ja 吉田, 正人

Search repository
TAMAI, Yutaka

× TAMAI, Yutaka

WEKO 17995

en TAMAI, Yutaka

Search repository
玉井, 裕

× 玉井, 裕

WEKO 17996

ja 玉井, 裕

Search repository
SANO, Yuzou

× SANO, Yuzou

WEKO 17997

en SANO, Yuzou

Search repository
佐野, 雄三

× 佐野, 雄三

WEKO 17998

ja 佐野, 雄三

Search repository
TERAZAWA, Minoru

× TERAZAWA, Minoru

WEKO 17999

en TERAZAWA, Minoru

Search repository
寺沢, 実

× 寺沢, 実

WEKO 18000

ja 寺沢, 実

Search repository
OKUYAMA, Takashi

× OKUYAMA, Takashi

WEKO 18001

en OKUYAMA, Takashi

Search repository
奥山, 剛

× 奥山, 剛

WEKO 18002

ja 奥山, 剛

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
キーワード
主題Scheme Other
主題 cell-wall
キーワード
主題Scheme Other
主題 extensibility
キーワード
主題Scheme Other
主題 change in tangential strain
キーワード
主題Scheme Other
主題 turgor pressure
キーワード
主題Scheme Other
主題 frost shrinkage
キーワード
主題Scheme Other
主題 water movement
キーワード
主題Scheme Other
主題 細胞壁伸展性
キーワード
主題Scheme Other
主題 内樹皮接線ひずみ
キーワード
主題Scheme Other
主題 膨圧
キーワード
主題Scheme Other
主題 低温乾縮
キーワード
主題Scheme Other
主題 水分移動
抄録
内容記述 形成層帯と師部の膨圧変動によって幹の接線方向にはひずみ変動が現れる。本研究は、このひずみから樹木の成長に関するどんな情報が得られるかを検討した。シラカンバを用い、幹と根の内樹皮表面にひずみゲージを貼り、接線方向ひずみの非破壊・連続測定を行った。接線ひずみは季節ごとに特有の変動を示しながら、年々増加していた。ひずみは、二次成長が始まる時期に急激に増加し、7月から8月にかけて一旦減少した。萌芽の前はひずみに日振幅はなかったが、萌芽に伴い、日振幅もひずみ絶対値も増加した。7月初旬に日振幅が最大となり、その時、ひずみ絶対値もその年の最大値を示した。落葉後は日振幅は見られなかった。地上高の違いによる、ひずみ位相のズレは確認されなかった。厳冬期には、著しいひずみの減少が生じた。この時期の温度変化に対するひずみ減少率は、0.0296%/Kであり、これは木材の凍結乾燥収縮率の0.03%Kにきわめて近い。細胞内腔で形成された氷の発達のため、細胞壁の水分が内腔へと移動し、細胞壁が凍結乾燥されたことが、厳冬期の著しいひずみ減少のおもな要因と思われる。
言語 ja
内容記述タイプ Abstract
抄録
内容記述 The aim of this paper is to acquire a growth information from the tangential strain due to changes in turgor pressure in the cells of the cambium and phloem. The strains were measured nondestructively and continuously using strain gauges pasted on the surface of the inner bark of the stem and roof of white birch (Betula platyphylla var. japonica). They showed seasonal changes. As a repeating seasonal pattern, the tangential strain increased year by year. In the season when secondary growth was most vigorous, the tangential strain increased year by year. In the season when secondary growth was most vigorous, the tangential strain increased rapidly and then decreased in July and August. Significant amplitude was not seen before the sprout, then both the strain and its amplitude began to increase rapidly accompanying the sprout. In early July, the diurnal strain amplitude showed a peak coinciding with the peak of the strain. The diurnal amplitude of strain disappeared after defoliation. A phase difference in the periodical strain change could not be seen in terms of the height from the ground. In winter season, marked shrinkage was found in the stem. During this season, the rate of dimensional change in the tangential direction per degree Kelvin was 0.0296 (%/K). This value is quite close to the freeze-drying shrinkage of wood, 0.03(%/K). The most probable cause of shrinkage during winter was the frost-shrinkage caused by the freezing-out call wall moisture into the cell lumen.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 農林水産研究情報センターで作成したPDFファイルを使用している。
言語 ja
内容記述タイプ Other
出版者
言語 ja
出版者 名古屋大学農学部附属演習林
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ID登録
ID登録 10.18999/nagufs.19.21
ID登録タイプ JaLC
関連情報
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://rms1.agsearch.agropedia.affrc.go.jp/contents/JASI/pdf/academy/63-0327.pdf
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 1344-2457
書誌情報 ja : 名古屋大学森林科学研究

巻 19, p. 21-28, 発行日 2000-12
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/8508
識別子タイプ HDL
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