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http://dx.doi.org/10.5322/JESI.2022.31.11.941

Evaluation of Major Taper Equation Models for Developing a Stem Volume Table of Cryptomeria japonica in Jeju Island  

Hyun-Soo, Kim (Warm Temperate and Subtropical Forest Research Center, National Institute of Forest Science)
Su-Young, Jung (Warm Temperate and Subtropical Forest Research Center, National Institute of Forest Science)
Kwang-Soo, Lee (Warm Temperate and Subtropical Forest Research Center, National Institute of Forest Science)
Publication Information
Journal of Environmental Science International / v.31, no.11, 2022 , pp. 941-950 More about this Journal
Abstract
This study was conducted to provide data and stem information to establish a local volume table of Cryptomeria japonica in Jeju Island. Stem analysis was performed on 26 trees by selecting two average trees from each site of the 13 plots of C. japonica stands in 2021 and 2022. During the analysis stage, one outlier tree was rejected, and a total of 260 observations of the specific stem height of 25 trees were used. Of the seven major taper equation models applied for parameter estimation and statistical verification, the Muhairwe 1999 model was found to be the best fit and selected as the optimal model. Stem shape-related estimates were acquired through the selected model, and sectional measurements according to the Smalian formula applied at an interval of 10 cm from the height of the stem were used to develop a volume table. A paired t-test comparison between the C. japonica volume obtained from the present study and those selected from the current yield table by NIFoS(2020), revealed significant differences (p<0.05), highlighting the necessity of a local volume table for C. japonica in Jeju Island.
Keywords
Cryptomeria japonica; Sectional measurement; Taper equation; Volume table;
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Times Cited By KSCI : 2  (Citation Analysis)
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