Wound healing in trees after cable logging thinning operations.

• Takeshima Kazusa

  Graduate School of Integrated Arts and Sciences, Kochi University

• Suzuki Yasushi

  Faculty of Agriculture and Marine Science., Kochi University

• Yamasaki Toshihiko

  Kochi Prefectural Forest Technology Center

Bibliographic Information

Other Title

• 架線系システムの間伐作業による残存木損傷の回復状況

Abstract

We investigated wound healing in trees after thinning operations using a cable logging system with a tower yarder. An observation plot was set up in a plantation of Japanese cedar and Japanese cypress near Kami City, Kochi Prefecture, Japan. A total of 130 wounds were recorded on 45 of 322 trees immediately after thinning and 6 years later in November 2017. Wounds were scored based on their appearance using a scale of five degrees of severity including “healed”. Width, length, and area were recorded, excluding healed wounds in subsequent surveys. Diameter at breast height (DBH) was measured as an index of tree growth. Comparison of wound statuses at two-time points revealed that all wound sizes reduced; however, some of the initially larger wounds had healed less completely. Most of the wounds with an initial width less than 0.04 m healed completely. The average DBH, which represented growth, was not significantly different between trees with healed and unhealed wounds. Wounds at 0.5 m or lower on the trunks exhibited significantly lower healing rates than those of wounds at 2.00–2.99 m.

Journal

• Journal of The Japan Forest Engineering Society

  Journal of The Japan Forest Engineering Society 34 (4), n/a-, 2019-10-31

  The Japan Forest Engineering Society

Keywords

• wounds
• thinning
• logging
• posterior process
• cable logging system

Details

• CRID: 1390565134809000064
• NII Article ID: 130007771120
• DOI: 10.18945/jjfes.34.205
• ISSN: 21896658
• ISSN: 13423134
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed