Effects of treeshelters 20 years after installation in Tsushima Island, Nagasaki Prefecture: Durability and impact on planted trees

DOI
  • ABE Tetsuto
    Kyushu Research Center, Forestry and Forest Products Research Institute
  • YANAGIMOTO Kazuya
    Nagasaki Agricultural and Forestry Technical Development Center
  • YAMAGAWA Hiromi
    Kyushu Research Center, Forestry and Forest Products Research Institute
  • NOMIYA Haruto
    Kyushu Research Center, Forestry and Forest Products Research Institute

Bibliographic Information

Other Title
  • 長崎県対馬におけるツリーシェルター施工地の20年後の状況：耐久性と成長した植栽木への影響

Abstract

We reported the condition after 20 years installing treeshelters on Chamaecyparis obtusa seedlings in Tsushima Island. Of the 198 seedlings that installed treeshelters in 1999, 150 (75.8%) were alive in late 2018. Since 24 seedlings had fallen due to the movement of surface soils, which is considered as accident during the initial period, the survival rate of the seedlings was 82.2% when the denominator was 174 seedlings after deducting this. Regarding the durability of the treeshelter, 37 of the surviving individuals were dropped, 53 were break, and 53 remained in a normal state. However, since the most of the 53 C. obtusa with the normal state treeshelter did not reach the diameter of treeshelter, they would likely to fall off when the seedlings grow. The treeshelter used in this study is unlikely to occur problems such as deformation of planted trees and early break of treeshelter even if it is left until thinning.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390574754489205632
  • DOI
    10.20756/ffpri.21.1_49
  • ISSN
    21899363
    09164405
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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