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このページ(論文)をリンクする場合は次のURLを使用してください: http://hdl.handle.net/2261/55998

タイトル: 東京大学北海道演習林において20年以上が経過した低標高域の地がき地におけるウダイカンバの更新状況
その他のタイトル: Regeneration of Betula maximowicziana more than 20 years after soil scarification at low-elevation zones in the University of Tokyo Hokkaido Forest
著者: 滝川, 寛之
松井, 理生
中川, 雄治
後藤, 晋
著者(別言語): Takigawa, Hiroyuki
Matsui, Masaki
Nakagawa, Yuji
Goto, Susumu
キーワード: Betula maximowicziana
regeneration
scarification
D2H
generalized linear mixed model
発行日: 2014年6月25日
出版者: 東京大学大学院農学生命科学研究科附属演習林
掲載誌情報: 東京大学農学部演習林報告. 第百三十一号, 2014年6月, pp. 41-55
抄録: We investigated the regeneration of Betula maximowicziana in scarified sites established more than 20 years ago in low-elevation zones in central Hokkaido, Japan. Three transects were established at each site and 3-m radius circular plots were located on each transect at 10-m intervals. We measured the diameter at breast height (DBH) of forest trees >1.3 m tall, and subsequently established two 10-m2 quadrats at each site in which we measured DBH and height of all trees. The relationship between DBH and height of B. maximowicziana was determined using an exponential equation. The height of B. maximowicziana trees that had regenerated within the circular plots was estimated based on the relationship between DBH and tree height. Finally, we calculated D2H [DBH2 × height] for each plot. The circular plots contained 36 tree species and the tree density at each site ranged from 1,957 to 4,480 trees/ha. Generalized linear mixed models showed that Betula platyphylla had a negative effect on regeneration of Betula maximowicziana,whereas Abies sachalinensis had a positive effect. Betula maximowicziana was superior in number, DBH, and height to other tree species; thus, we suggest that B. maximowicziana would be the dominant tree species on scarified sites and would occupy the majority of the canopy. Scarification in low-elevation zones may be an effective method for promoting regeneration of B. maximowicziana.
内容記述: 論文
URI: http://hdl.handle.net/2261/55998
ISSN: 03716007
出現カテゴリ:演習林報告
演習林報告

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