Japanese Journal of Forest Environment
Online ISSN : 2189-6275
Print ISSN : 0388-8673
ISSN-L : 0388-8673
Short Communication
Diagnosis of wood decay in Abies mariessi and Abies veitchii in a subalpine evergreen coniferous forest
Mayo TakaoHajime Kobayashi Mayu YamakoshiTetsuoh ShirotaTetsuro OkanoHiroaki ShirasawaTeruo AraseWataru KinoshitaYukio NomizoToshinobu Sakai
Author information
JOURNAL FREE ACCESS

2021 Volume 63 Issue 2 Pages 39-44

Details
Abstract

Wood decay in Abies mariessi and Abies veitchii growing in a subalpine evergreen coniferous forest was diagnosed using stress-wave velocity and drilling resistance. Factors affecting the outbreak of wood decay in subalpine forest was discussed. Stress-wave velocity was low in decayed trees and trees exhibiting frost-crack. Furthermore, stress-wave velocity decreased with increasing degrees of decay along trunk diameters in trees without frost-crack. The frequency distribution of stress-wave velocities was either normal or skewed to lower stress-wave velocity classes. Stem densities of individual Abies mariessi and Abies veitchii in the low stress-wave velocity class increased with increasing elevation. These results indicate that the stem density of decayed trees and trees exhibiting frost-crack increase with increasing elevation. Sapwood decay was observed in many frost-crack trees and, therefore, lacerations on the trunk made by frost cracking may be an infection route for wood-decay fungi. Since the stem densities of the frost-crack and the sapwood decayed trees was high at higher elevation, it was concluded that frost-crack may accelerate occurrence of wood decay at higher elevations in the subalpine evergreen coniferous forest.

Related papers from these authors
© The Japanese Society of Forest Environment
Previous article
feedback
Top