The effect of leaving blown down trees after wind damage in the forest of Japanese larch on the infestation of larch bark beetle

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  • Cho Keiichiro
    University Forests, Faculty of Agriculture, Kyushu University
  • Hara Hideho
    Forestry Research Institute Doto Station, Hokkaido Research Organization
  • Hishi Takuo
    University Forests, Faculty of Agriculture, Kyushu University
  • Tashiro Naoaki
    University Forests, Faculty of Agriculture, Kyushu University
  • Mabuchi Tetsuya
    University Forests, Faculty of Agriculture, Kyushu University
  • Inoue Sachiko
    University Forests, Faculty of Agriculture, Kyushu University
  • Yamauchi Kohei
    University Forests, Faculty of Agriculture, Kyushu University
  • Ogata Takehito
    University Forests, Faculty of Agriculture, Kyushu University
  • Koga Shinya
    University Forests, Faculty of Agriculture, Kyushu University

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Other Title
  • カラマツ林における風倒木放置が残存立木のカラマツヤツパキクイムシ被害に与える影響
  • カラマツ林における風倒木放置が残存立木のカラマツヤツバキクイムシ被害に与える影響
  • カラマツリン ニ オケル カゼ トウボク ホウチ ガ ザンソン タチキ ノ カラマツヤツバキクイムシ ヒガイ ニ アタエル エイキョウ

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Abstract

The study was done to evaluate the impact of leaving blown trees after wind damage in the forest of Japanese larch (Larix kaempheri) on the damage of larch bark beetle (Ips cembrae) to residual living trees. A control site leaving blown down trees and a treatment site removing all trees were established in a 26-year-old man made forest soon after heavy wind damage occurred in Ashoro Research Forest of Kyushu University in October 2006, and the infestation of larch bark beetle and the tree condition in two sites were monitored. The attack of the bark beetle to living trees were observed from two years later after the wind damage. However, percentage of living trees attacked was low in both sites, 3.7% in the control site and 4.7% in the treatment site, and the significant difference were not found between these sites. Further study will be required to confirm the effectiveness of removing fallen trees after wind damage on the infestation of larch bark beetle.

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