Tree and Forest Health
Online ISSN : 2189-7204
Print ISSN : 1344-0268
ISSN-L : 1344-0268
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Volume 24, Issue 4
Displaying 1-3 of 3 articles from this issue
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Original Article
  • Comparison of four decay diagnostic instruments on artificial cavities in woods of Japanese zelkova (Zelkova serrata)
    Yuki Nikaido, Hirohito Higuchi, Shinji Akimoto, Tetsuo Hosono
    2020 Volume 24 Issue 4 Pages 195-203
    Published: October 31, 2020
    Released on J-STAGE: March 14, 2022
    DOIhttps://doi.org/10.18938/treeforesthealth.24.4_195
    JOURNAL FREE ACCESS
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    We need to understand the characteristics of tree decay diagnostic instrument to estimate the rate of decay and cavities in trees correctly due to prevent collapse of trees. We made 7% to 45% crescent-shaped or cross-shaped cavities in discs made from Japanese zelkova wood with a diameter and a thickness of 30 cm as materials for study. Their cavities were estimated with four types of decay diagnostic instrument (sound wave, radar, gamma rays, drilling resistance). As a result, depending on the instrument and the shape of cavities, there were cases when they were correctly estimated, underestimated, and overestimated. It was confirmed that the risk of tree failure might be overlooked at times.

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Series: Consideration for treatment of tree and forest damage by birds and beasts
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