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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 37号
  1. 部局別インデックス
  2. 農学部

第 2 報 除伐 5 ヶ月目の萌芽の状況(天然生常緑広葉樹林の林相改善に関する研究)(附属演習林)

http://hdl.handle.net/20.500.12000/3867
http://hdl.handle.net/20.500.12000/3867
2e661725-c196-4213-bc4f-21692d88de93
名前 / ファイル ライセンス アクション
KJ00000161647.pdf KJ00000161647.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 第 2 報 除伐 5 ヶ月目の萌芽の状況(天然生常緑広葉樹林の林相改善に関する研究)(附属演習林)
言語 ja
作成者 平田, 永二

× 平田, 永二

ja 平田, 永二

寺園, 隆一

× 寺園, 隆一

ja 寺園, 隆一

生沢, 均

× 生沢, 均

ja 生沢, 均

Hirata, Eiji

× Hirata, Eiji

en Hirata, Eiji

Terazono, Ryuichi

× Terazono, Ryuichi

en Terazono, Ryuichi

Ikuzawa, Hitoshi

× Ikuzawa, Hitoshi

en Ikuzawa, Hitoshi

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
内容記述
内容記述タイプ Other
内容記述 本調査は,天然林の林相改善を目的に除伐された除伐木の除伐5ヶ月目の萌芽率,1株当りの萌芽本数及び萌芽長について調査を行い,プロット及び樹種によって差があるかどうかを検討すると共に,年齢,直径及び伐採高に対する,これらの変化について考察したものである。調査の結果を要約するとおよそ次の通りである。1) 萌芽率,萌芽本数及び萌芽長は,いずれも樹種によっては著しく差を生ずるが,プロット間,すなわち,地形や林相の違いによっては,萌芽率及び萌芽本数には差があるが,萌芽長には差が認められない。すなわち,萌芽5ヶ月の段階では,萌芽長は余り環境の影響を受けないと考えて良い。2) 除伐木は,皆伐木に比べて,萌芽率が著しく低下するばかりでなく,萌芽本数も少ない。3) 萌芽率は年齢35年,直径10cm,伐採高30cmを境にして,その前後で傾向を異にする。すなわち,萌芽率はそれぞれその値に達するまでは増加の傾向を示すが,それ以降では漸次減少する。4) 萌芽本数は,年齢,直径の増大に伴い,いくらか増加するが,伐採高との関係では,逆に少なくなる傾向にある。5) 萌芽長は年齢25年を境に,その前後で差があり,若年齢が高くなっている。また,萌芽長は直径及び伐採高が増加するに伴い,いくらか高くなる傾向が認められる。
内容記述タイプ Other
内容記述 The sprout percentage, number of sprout per stump and sprout growth, in 5 months, of the trees subjected to cleaning cutting for the improvement of the stand structure of an evergreen broad-leaved forest were investigated as a function of plots, species, ages, diameters and stump heights. The results obtained are as follows; 1) Sprout percentage, number of sprout and sprout growth gave extreme variations among species. The sprout percentage and number of sprout were greately influenced by plots, i. e., topography and stand type, while sprout growth was not influenced at all. That is, sprout growth would be considered not to be influenced by the environmental factors investigated for a period of 5 months. 2) The trees subjected to cleaning cutting, in comparison to those subjected to clear cutting, gave not only an extremely low sprout percentage but also a low number of sprout. 3) Sprout percentage gave an increasing tendency up to the points of 35 years in age, 10cm in diameter and 30cm in stump height and, beyond them, gradually decreasing tendency. 4) Number of sprout gradually increased with an increase in age and diameter but decreased with an increase in stump height. 5) Sprout growth gave significant differences before and after 25 years in age, being higher at younger ages, and a tendency of relatively higher values with an increase in diameter and stump height.
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 jpn
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/20.500.12000/3867
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 37, p. 237-244
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