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http://dx.doi.org/10.14578/jkfs.2019.108.3.349

The Adequacy Assessment and Growth Effects by Methods of 1st Thinning in Chamaecyparis obtusa Forest  

Park, Joon Hyung (Forest Biomaterials Research Center, National Institute of Forest Science)
Son, Yeong-Mo (Forest Biomaterials Research Center, National Institute of Forest Science)
Lee, Kwang Soo (Warm-Temperate and Subtropical Forest Research Center, National Institute of Forest Science)
Park, Eun Jung (Forest Biomaterials Research Center, National Institute of Forest Science)
Jung, Su Young (Warm-Temperate and Subtropical Forest Research Center, National Institute of Forest Science)
Publication Information
Journal of Korean Society of Forest Science / v.108, no.3, 2019 , pp. 349-356 More about this Journal
Abstract
This study examines the effect of thinning in terms of changes in the growth characteristics of Chamaecyparis obtusa stands after they were thinned with varying intensity in Gochang, North Jeolla Province, Korea. Thinning was carried out in 2000 on Chamaecyparis obtusa stands (22 years old), and the stands were categorized in terms of the thinning intensity in the experiment: very heavy, heavy, medium, light, and control. The results of monitoring up to 2018 revealed that the diameter at breast height and the growth rate of individual trees after thinning had a positive correlation with the thinning intensity, whereas the stand volume showed a negative correlation. The height to diameter (H/D) ratio decreased by up to 70-80 due to the increased diameter at breast height after thinning and thereby resulted in better quality. The relative yield index right after the first thinning was between 0.75 and 0.95, which suggests the best timing for the first thinning had been missed. This study's findings are expected to serve as a basic reference in establishing the thinning system for Chamaecyparis obtusa forests.
Keywords
thinning effect; thinning intensity; relative yield index; hinoki cypress; forest tending;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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