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http://dx.doi.org/10.14578/jkfs.2020.109.4.461

Development of a Stem Taper Equation and a Stem Table for Criptomeria japonica Stands in South Korea  

Ko, Chi-Ung (Division of Forest Industry Research, National Institute of Forest Science)
Lee, Seung-Hyun (Division of Forest Industry Research, National Institute of Forest Science)
Lee, Sun-Jung (Division of Forest Industry Research, National Institute of Forest Science)
Kim, Dong-Geun (Department of Ecology and Environment System, Kyungpook University)
Kang, Jin-Taek (Division of Forest Industry Research, National Institute of Forest Science)
Publication Information
Journal of Korean Society of Forest Science / v.109, no.4, 2020 , pp. 461-467 More about this Journal
Abstract
The aim of this study was to utilize Kozak's stem taper model to develop both a stem taper equation and a stem volume table for Criptomeria japonica, a tree species distributed across Korea. A total of 1,000 sample trees were cut and collected across the country to measure their diameters by stem height. The equation was then used to estimate examine their stem shapes. Our results show that the Fitness Index for the equation was 98.7%, the Mean Absolute Deviation (MAD) was -0.0142, and the MAD was 1.1640, thus indicating a high level of fitness. A statistically significant difference (p < 0.05) was also found from the analysis of discrepancies between a current table and the new table used in this study. It is therefore suggested that the new table-with data from actual stands-will contribute to enhancing the accuracy of national and municipal forest statistics and reducing losses caused by imprecise data on available forest resources.
Keywords
Criptomeria japonica; stem voulme table; Kozak's stem taper equation; forest management; stem analysis;
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Times Cited By KSCI : 3  (Citation Analysis)
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