한국산림과학회지 (Journal of Korean Society of Forest Science)

  • 제108권3호
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  • Pages.357-363
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  • 2019
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  • 2586-6613(pISSN)
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  • 2586-6621(eISSN)
한국산림과학회 (Korean Society of Forest Science)
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변량지수식을 이용한 전국 상수리나무의 입목수간재적표 추정

Estimating Stem Volume Table of Quercus Acutissima in South Korea using Variable Exponent Equation

  • 고치웅 (국립산림과학원 산림산업연구과) ;
  • 김동근 (경북대학교 생태환경시스템학과) ;
  • 강진택 (국립산림과학원 산림산업연구과)
  • Ko, Chi-Ung (Division of Forest Industry Research, National Institute of Forest Science) ;
  • Kim, Dong-Geun (Department of Ecology and Environment System, Kyungpook National University) ;
  • Kang, Jin-Taek (Division of Forest Industry Research, National Institute of Forest Science)
  • 투고 : 2019.05.07
  • 심사 : 2019.07.01
  • 발행 : 2019.09.30
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초록

본 연구는 Kozak 수간곡선모델을 이용하여 우리나라 상수리나무의 입목수간재적표를 개발하고자 수행하였다. 전국의 분포하고 있는 상수리나무를 총 2,700본의 표준목을 벌채하여 수간고별 직경과 수간석해 자료를 수집하여 생장특성을 조사하였다. 수간곡선식의 적합도 검정을 위하여 적합도지수(Fitness index), 편차(Bias), 평균절대편차(Mean Absolute Deviation)를 이용하여 모델의 적합성을 판단하였다. 추정된 모델의 적합도지수는 97%로 나타났고 편차는 0.017, 평균절대편차는 1.118로 높은 적합도를 보였다. 또한 현행재적표와 신규재적표의 재적간의 차이를 분석한 결과, 통계적으로 유의적인 재적차이를 보였다(p = 0.0008, <0.005). 이는 현실림을 반영한 신규재적표를 이용하는 것이 목재자원량의 평가시 손실을 줄이고 국가 및 지자체의 산림통계의 정확도를 향상시킬 것으로 판단된다. 본 연구의 주요한 결과인 추정된 수간곡선식을 이용한 입목수간재적표는 우리나라의 주요 활엽수종인 참나무류 중 상수리나무의 생장 정보 및 합리적 경영을 위한 경영제표가 될 것으로 판단된다.

This study was conducted to develop a stem volume table for Quercus acutissima in Korea by using Kozak's stem taper equation. In total, 2700 tree samples were collected around the country, and growth performance was investigated through compiling data on diameters by stem height and stem analysis. In order to test the stem taper equation's fitness, the fitness index (FI), bias, and mean absolute deviation (MAD) were analyzed. The fitness of the equation was estimated at 97%, bias as 0.017, and MAD turned out to be 1.118, respectively. Furthermore, there was a statistically significant volume difference between the current volume table and the new volume table (p = 0.0008, <0.005). The result indicates that using the new volume table that reflects the actual forest will reduce the loss when assessing wood resources and will improve the accuracy of forest statistics for national and local governments. A stem volume table, the main result of this research, which is utilized in the estimated stem taper equation, will provide growth information for Quercus acutissima, one of the main broadleaf species in Korea, and will function as a management indicator for rational forest management.

키워드

참고문헌

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