Growth pattern analysis by stem analysis of Korean white pine(Pinus koraiensis)in the central northern region of Korea

Abstract

The study was performed to find the growth pattern by stem analysis of Korean white pine (Pinus koraiensis) in the Central Northern Region of Korea. One standard tree from each of 16 sites was stemmed and analyzed for the study. For sampled trees, the age range was 16À77 years, diameter at breast height (DBH) was 15.8À44.4 cm, height was 9.3À24.0 m, and stem volume was 0.1002À1.8518 m 3 . The stem volumes by our study had higher values over 40 DBH compared to Korea Forest Research Institute measurements. The bark volume had no particular trend with DBH and height, while bark ratio tended to decrease with DBH and height. The DBH and height curves by age had a concave shape whereas volume curve had a convex shape. The average periodic annual increment (PAI) of DBH was the highest at age 15 (1.0 cm/yr), and the highest value of the mean annual increment (MAI) of DBH was 0.7 cm/yr at age 30. The highest values of PAI and MAI of height were 0.6 m/yr (age 15) and 0.5 m/year (age 25) respectively. The average PAI and MAI of volume continued to increase even after age 75. Growth percentages of DBH, height and volume tended to decrease with age, particularly rapidly at age 20À30. Volume growth percentage was much higher than diameter and height.

Growth Analysis of Red Pine (Pinus densiflora) by Stem Analysis in the Eastern Region of Korea

“…The percentage of volume growth decreased to 19.6% (age 20), 8.4% (age 40), 2.9% (age 60), 4.0% (age 80) and 2.6% (age 95). Volume growth percentage was much higher than dbh and height growth percentages, which was the similar result to the study on Korean pine by Seo et al (2014). Meanwhile the percentage of volume growth in our study was higher than the percentages by KFRI (2012b).…”

“…3). After removing 3 data with dbh >40 cm, there was no significant difference (p=0.47) in the volumes between our study and KFRI's study (2012), showing the similar trend to the study on Korean pine by Seo et al (2014).…”

Estimation of Genetic Parameters and Wood Yield Selection Index in a Clonal Trial of Korean Pine (Pinus koraiensis) in Northeastern China

“…When different clones are planted in a macro-site with approximately similar environmental conditions, the clonal average allows the selection of excellent genotypes by minimizing environmental effects at the individual level [49]. Average performances of different genotypes helped to establish a clonal ranking to select the elite ones [42].…”

The Growth Pattern of <i>Chamaecyparis obtuse</i> Stand along Longevity in Gyeongnam Province, South Korea

“…The same result was reported by different studies showing an inverse relationship between annual growth rate and age along the longevity, as the age increase, the amount of annual growth decrease (Johnson & Abrams, 2009;Binkley et al, 2002;McMurtrie et al, 1995). A study on another species (Pinus koraiensis) in S. Korea resulted in the way of growth percentages of DBH, height and volume tended to decrease with age particularly rapidly at age 20 -30 (Seo et al, 2014(Seo et al, , 2018. Likewise, in the eastern region of S. Korea the diameter and height growth of Pinus densiflora species felled down rapidly with longevity until age 30 (Seo et al, 2015).…”