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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 48号
  1. 部局別インデックス
  2. 農学部

沖縄におけるイタジイ優占の常緑広葉樹林の萌芽更新 : II. 萌芽の位置と成長

http://hdl.handle.net/20.500.12000/3654
http://hdl.handle.net/20.500.12000/3654
53d4aff8-91ab-44e7-ac31-26774ff5befa
名前 / ファイル ライセンス アクション
KJ00000161928.pdf KJ00000161928.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2008-02-14
タイトル
タイトル 沖縄におけるイタジイ優占の常緑広葉樹林の萌芽更新 : II. 萌芽の位置と成長
言語 ja
作成者 呉, 立潮

× 呉, 立潮

ja 呉, 立潮

新里, 孝和

× 新里, 孝和

ja 新里, 孝和

西端, 統宏

× 西端, 統宏

ja 西端, 統宏

田場, 和雄

× 田場, 和雄

ja 田場, 和雄

榎木, 勉

× 榎木, 勉

ja 榎木, 勉

平田, 永二

× 平田, 永二

ja 平田, 永二

Wu, Lichao

× Wu, Lichao

en Wu, Lichao

Shinzato, Takakazu

× Shinzato, Takakazu

en Shinzato, Takakazu

Nishihata, Osahiro

× Nishihata, Osahiro

en Nishihata, Osahiro

Taba, Kazuo

× Taba, Kazuo

en Taba, Kazuo

Enoki, Tsutomu

× Enoki, Tsutomu

en Enoki, Tsutomu

Hirata, Eiji

× Hirata, Eiji

en Hirata, Eiji

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
主題
言語 ja
主題Scheme Other
主題 常緑広葉樹林
言語 ja
主題Scheme Other
主題 萌芽更新
言語 ja
主題Scheme Other
主題 萌芽位置
言語 ja
主題Scheme Other
主題 萌芽成長
内容記述
内容記述タイプ Other
内容記述 本論文は亜熱帯照葉樹林地帯において,森林の循環利用のための人為干渉跡地の天然更新とくに萌芽更新システムに関する研究の一環をなす。天然林皆伐地5年後の根株に発生した萌芽枝の位置と成長に関する研究が,沖縄島北部に位置する琉球大学農学部附属与那演習林のイタジイの優占する常緑広葉樹林で実施された。萌芽枝の15.8%は根株の上部に,84.2%は下部に位置するものであった。これはほとんどの萌芽枝が根株の上部よりも下部に発生することを示している。萌芽位置は樹種によって異なる特性をもち,62種のうち,16種は下部に位置する萌芽枝のみであった。相対的に,1種は上部に位置する萌芽枝のみが見られ,2種は萌芽枝のない枯死根株で,43種は上部だけでなく下部に位置する萌芽枝も形成した。ほとんどの樹種は下部に発生したが,7種は,上部に位置する萌芽枝が下部のそれより平均胸高直径と平均樹高とも明らかにより高い値を示した。根株の胸高直径の大きさと萌芽成長に関して,萌芽林の平均胸高直径と平均樹高の解析から胸高直径で3区分できることが認められた。これは萌芽更新に際して伐採前に適切な胸高直径の立木が存在することを指示しているもので,実験地では萌芽更新のための立木の適切な胸高直径は10.0∿25.5cmであった。伐採前の立木の胸高直径や樹種による萌芽の特性を知ることは,天然更新施業法における素材生産と多様な森林生物の保全の調和を基調とする萌芽更新システムに関して重要な指針を提示する。
内容記述タイプ Other
内容記述 The paper studied the positions and growths of different sprout shoots five years after clear cutting at broad-leaved forest dominated by Castanopsis sieboldii in Okinawa. The result showed that 15.8% of sprout shoots came out from the upper part of a stump, whereas 84.2% of all shoots belonged to lower ones. This suggested that most of sprout shoots occurred on lower part of a stump rather than on upper part. Different species may have different characteristics of sprout positions. In the present study, of 62 species, 16 species had only lower position shoots. Relatively, one species had only upper position shoots, 2 species were dead without any sprout shoot, and 43 species had not only upper position shoots but also lower position ones. Although most shoots occurred in lower part, 7 species, upper part sprouts had higher values remarkably for both mean D. B. H (diameter at breast height) and mean height than lower ones. Along with the increasing of D. B. H of stump, three D. B. H class regions for the sprout growth were recognized on the basis of analysis of mean D. B. H and mean height of sprout stands. This suggests an existence of appropriate D. B. H before cutting for sprout regeneration. In experimental area the appropriate D. B. H for sprout regeneration was 10.0∿25.0cm. The studies on sprout characteristics of species and D. B. H before cutting are very important to the working techniques of natural regeneration system that maintains the coordination for the timber production and the protection of the wild life.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学農学部
言語
言語 eng
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/3654
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0370-4246
収録物識別子タイプ NCID
収録物識別子 AN00250548
収録物名
言語 ja
収録物名 琉球大学農学部学術報告
書誌情報
号 48, p. 153-163
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Ver.1 2022-01-27 02:35:36.532032
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エクスポート

OAI-PMH
  • OAI-PMH JPCOAR
  • OAI-PMH DublinCore
  • OAI-PMH DDI
Other Formats
  • JSON

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