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Estimation of Merchantable Volume and Yield Using A Stem Shape Simulation  

Kwon, Soonduk (Dept. of Forest Management, Korea Forest Research Institute)
Kim, Hyungho (Research Institute for Agriculture and Life Science, Seoul National University)
Chung, Joosang (Dept. of Forest Sciences, Seoul National University)
Publication Information
Journal of Korean Society of Forest Science / v.96, no.3, 2007 , pp. 362-368 More about this Journal
Abstract
This study was conducted to estimate merchantable volume and yield per diameter (DBH) class of Pinus koraiensis and Larix kaempferi. Stem volume of trees in each diameter class was calculated using the existing equations for taper and height curve. Saw logs and pulpwood volume were then estimated from the stem volume in each diameter class. The final step was to estimate merchantable volume and yield from saw logs, assuming saw logs were used for lumber (boards or dimension products) production only. The results showed that the stem volume of Larix kaempferi was 23~38% higher than that of Pinus koraiensis at the same diameter classes. Both species were able to produce saw logs from the diameter class of 18 cm. Saw logs and pulpwood yield for both species rapidly increased due to the size limitation on small end diameter. This yield reached a maximum of 90% and 88% at 26 cm and 38cm diameter class, respectively, for Pinus koraiensis and Larix kaempferi. Lumber yield estimated for board products ranged from 23% to 56%. In the case of dimension products, Lumber yield became significantly smaller as saw logs were used for larger dimension products. These results can be used for calculating merchantable volume and economic value of trees, as well as determining final lumber products.
Keywords
stem shape simulation; merchantable volume and yield; saw logs; pulpwood; board; dimension;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 권순덕. 2003. 임분단위 산림경영을 위한 시뮬레이션 모델 개발. 서울대학교 박사학위논문. pp. 1-113
2 Son, Y M., Lee, K. H., Lee, W. K. and Kwon, S. D. 2002. Stem taper equations for six major tree species in Korea. Journal of Korean Forest Society 91(2): 206-212
3 김갑덕. 1963. 입목의 이용재적에 대하여. 한국임학회지 3: 10-14
4 Kozak, A. 1988. A variable-exponent taper equation. Canadian Journal of Forest Research 18: 1363-1368   DOI
5 김지흥, 이종구. 1986. 잣나무와 낙엽송림에 있어서 수형과 재적간의 관계 비교. 한국임학회지 74: 82-87
6 Kretschmann, D. E., Isebrands, J. G., Stanosz, G., Dramm, J. R., Olstad A., Cole, D. and Samsel, J. 1999. Structurallumber properties of hybrid poplar. V.S.D.A. Research paper FPL-RP-573: 1-8
7 McAdoo, J. C. 1969. Computer simulation of small-log mill processing. Forest Products Journal 19(4): 34-35
8 윤여창, 장호찬. 1990. 참나무림 경영의 경제성분석. 서울대학교 연습림 연구보고 26: 42-54
9 노대균, 손영모, 이우균. 2000. 주요 수종의 임목자원 측정시스템 개발. 임업연구사업보고서(산림자원분야 5-III). pp. 327-356
10 Hallock, H. and Lewis, D. W. 1976. Is there a 'best' sawing method? U.S.D.A. Research paper FPL-280: 1-12
11 Lewis, D. W. 1985. Sawmill simulation and the best opening face system-a user's guide. V.S.D.A. General Technical Report FPL-48: 1-29
12 이춘택, 권중택, 한갑준. 1989. 이동식 재제기를 활용한 국산재 재제실연 시험. 임업시험연구보고서(이용분야 4-II). pp. 195-213
13 Hallock, H. and Lewis, D. W. 1971. Increasing softwood dimension yield from small logs-best opening face. U.S.D.A. Research paper FPL-166: 1-11