Diameter Growth Analysis for Major Species using National Forest Resource Inventory - In the Gangwon-do Forests -

Won-A Lee, Ju-Won Shin, Jung-Kee Choi, Woo-Kyun Lee, Youn-Jin  Lee, Sung-Ho Kim, Dong-Jun Jung

Abstract

This study was carried out to analyze annual diameter growth characteristics for major 11  tree species using the data for Gangwon province of the National Forest Resources Inventory in 2007. The annual  diameter growth of coniferous species was 5.02 mm, 4.70 mm, and 3.90 mm in Korean white pine, Japanese larch, and Korean red  pine, respectively. In growths of the deciduous trees, dogwood, basswood, and cork oak had 3.55 mm, 3.48 mm and 3.01  mm, respectively. Average of the annual diameter growths for all species was 3.38 mm. The relationship between diameter growth  and age class showed that the growth rate decreased for all species as age increased. The age class II had the highest annual  diameter rate. In relation of the stand density(trees per hectare) and diameter growth, the diameter growth tended to decrease as  the stand density increased for most species, especially Korean white pine, cork oak, and basswood. Finally age had the highest  value in the correlation coefficients between measurement factor and growth rate regardless of species.