천연활엽수림내 신갈나무와 굴참나무의 직경생장 특성

초록

This study was conducted to ases the diameter growth paterns of Quercus mongolica and Quercusvariabilis dominant species in natural deciduous forests in Korea. The diameter growth data were collected from83 destructively sample trees for stem analysis in Gangwon-Do region. The relationship betwen diametergrowth and 14 tre measurements was also analyzed. The average diameter growth rate of dominant tres forboth species increased until ages of 15-20 years, and exhibited generally constant trend for subsequent ages. Thegrowth for last 5 measurement years was 0.28 cm/yr for Quercus mongolica and 0.27cm/yr for Quercusvariabilis. The observed growth rate decreased with decreasing crown class. The diference between diametergrowth rates for different crown classes was only statistically significant (p<0.0001) for Quercus mongolica.Pearson corelation 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. ForQuercus variabilis, Pearson corelation 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).

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