Bark Thickness and Bark Percent of Pinus densiflora in Kangwon Province
Yeong-Mo Son, Kyeong-Bak Lee, Young-Gyo Chung and Woo-Kyun Lee

 

ABSTRACT : This study was carried out to estimate the bark thickness and bark percent of Pinus densi/lora in Kangwon province. The sample data were surveyed in Kangwon and Kyeongbuk province. From the sample trees. dbh. height and diameter by cross section height etc were measured. As cross section height were high, the trend of bark width had decreased step by step. The variation of bark thickness by cross section height had showed high in below cross section height. As cross section height were high, the variation of bark thickness had decreased, and it had showed to similar in 0.25 of relative height or more. In consideration of bark thickness, bark thickness estimation equation was es~imated with dbh, height and diameter by cross section. It had showed very significent in fitness and reliability of estimatton coefficent. Bark volume by estimation equation had calculated at the rare of volume outside bark and dbh. Bark volume percent of volume outside bark had showed high to 20?o level under 0.1m' of volume and approximately 10~o in 0.2m' of volume. Bark percent had showed approximately 8 -10°o in 0.2m' of volume or more. Bark volume percent from dbh had showed within the range of 18- 8?~ by dbh class, and it had showed approximately 18°~ in dbh class 6cm. With the increase of dbh class. bark volume percent had decreased quickly and approxtmately 10% in 22cm of dbh class. Subsequently. bark volume dercent had showed approxitely 8 - 10%.

Key words : Bark volume, Bark thickness, Bark percent.