Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Diameter Growth Characteristics of Quercus mongolica and Quercus variabilis in Natural Deciduous Forests

천연활엽수림(天然濶葉樹林)내 신갈나무와 굴참나무의 직경생장(直徑生長) 특성(特性)

  • Choi, Jung-Kee (Division of Forest Management.Landscape Architecture, College of Forest Sciences, Kngwon National University) ;
  • Yoo, Byoung-Oh (Korea Forest Research Institute)
  • 최정기 (강원대학교 산림과학대학 산림경영.조경학부) ;
  • 유병오 (국립산림과학원)
  • Received : 2006.01.17
  • Accepted : 2006.02.28
  • Published : 2006.03.31
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Abstract

This study was conducted to assess the diameter growth patterns of Quercus mongolica and Quercus variabilis dominant species in natural deciduous forests in Korea. The diameter growth data were collected from 83 destructively sample trees for stem analysis in Gangwon-Do region. The relationship between diameter growth and 14 tree measurements was also analyzed. The average diameter growth rate of dominant trees for both species increased until ages of 15-20 years, and exhibited generally constant trend for subsequent ages. The diameter growth rate of both species ranged from 0.09-0.83 cm/yr across the all ages. Average annual diameter growth for last 5 measurement years was 0.28 cm/yr for Quercus mongolica and 0.27cm/yr for Quercus variabilis. The observed growth rate decreased with decreasing crown class. The difference between diameter growth rates for different crown classes was only statistically significant (p<0.0001) for Quercus mongolica. Pearson correlation coefficient between the diameter growth rate decreased with relative diameter (r=0.64), relative height (r=0.61), exposed crown area (r=0.58) and total crown area (r=0.56) for Quercus mongolica. For Quercus variabilis, Pearson correlation coefficient decreased with dbh (r=0.57), crown width (r=0.55), age (r=0.39), competition index (r=-0.39), and height (r=0.35).

본 연구는 우리나라 천연활엽수림의 대표적 수종인 신갈 굴참나무를 대상으로 흉고직경 생장량 패턴을 알아보고, 14개의 임목 측정인자와 직경생장량과의 관계를 규명하기 위하여 실시하였다. 본 생장량 자료는 강원도 천연활엽수림지역에서 벌도 된 83본의 신갈 및 굴참나무에 대하여 수간석해를 통하여 분석하였다. 두 수종 모두 우세목의 경우 평균적으로 15~20년까지 흉고직경생장률이 높게 나타나다가 그 이후부터는 일정한 생장량을 갖고, 매년 0.09~0.83 cm/yr의 흉고직경생장을 하는 것으로 나타났다. 최근 5년간의 연년직경생장량은 신갈나무가 평균 0.28 cm/yr로 굴참나무 평균 0.27 cm/yr 자라는 것으로 실측되었으며, 두 수종 모두 우세목, 준우세목, 중간목, 피압목 순으로 생장이 좋은 것으로 확인되었다. 특히, 신갈나무의 경우는 수관급간에 직경생장량이 매우 유의적인 차이 (p<0.0001)가 있는 것으로 나타났다. 또한, 14개의 입목 측정인자와 조제변수를 이용하여 최근 5년간의 연년직경생장량과 Pearson 상관분석을 실시한 결과, 신갈나무의 경우 상대직경(r=0.64), 상대수고(r=0.61), 노출된 수관투영면적(r=0.58), 전체 수관투영면적(r=0.56)순으로 상관관계가 높게 나타났으며, 굴참나무는 흉고직경(r=0.57), 수관폭(r=0.55), 연령(r=0.39), 경쟁지수(r=-0.39), 수고(r=0.35)순으로 상관관계가 있는 것으로 나타났다.

Keywords

Acknowledgement

Supported by : 한국과학재단

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