Evaluation of a Stress-wave Timer For the Minimally Destructive Detection of Decay in Living Trees in Northern-Japanese Forests

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概要

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• The use of a stress-wave timer as a minimally destructive device for detecting decay or defect in living trees was evaluated. Measurements were conducted on five tree species (Picea jezoensis, P. glehnii, Betula platyphylla var. japonica, Abies sachalinensis, and Larix kaempferi) with or without decay. Except in sap-rotted A. sachalinensis, the apparent stress-wave velocity in most decayed trees was considerably lower than the value obtained from healthy trees. Our results showed that defect or decay in the trees was detectable more effectively by the method used in the field survey, although the device occasionally failed to detect decay that was incipient, of small extent or confined to sapwood. Other disadvantages of this method are briefly discussed in this paper.

• 一般社団法人日本森林学会の論文
• 2001-05-16

著者

• Sasaki Katsuhiko

  Hokkaido Research Center Forestry And Forest Products Research Institute

• SAKAMOTO Yasuaki

  Hokkaido Research Center, Forestry and Forest Products Research Institute

• Yamaguchi Takehiro

  Hokkaido Research Center, Forestry and Forest Products Research Institute

• Yamaguchi Takehiro

  Hokkaido Research Center Forestry And Forest Products Research Institute

• Sakamoto Yasuaki

  Hokkaido Research Center Forestry And Forest Products Research Institute

関連論文

• Distribution of clubroot disease of a cruciferous weed, Cardamine flexuosa, in major isolated islands, Hokkaido and Okinawa in Japan
• Evaluation of a Stress-wave Timer For the Minimally Destructive Detection of Decay in Living Trees in Northern-Japanese Forests
• Biological characteristics of Cryptosporiopsis abietina on Hinoki cypress and its antagonistic effect to other microorganisms
• Anatomy of Bacterial Canker on Maackia amurensis var. buergeri

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