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Bark Production Analysis on Top Branch of Rhus verniciflua  

Song Byong-Min (Dept. of Forest Science, Sangji University)
Lee Myoung-Sun (Dept. of Botanical Resources, Sangji University)
Publication Information
Korean Journal of Plant Resources / v.18, no.2, 2005 , pp. 337-342 More about this Journal
Abstract
This study was conducted to investigate the bark production from a top branch(Woojuk) of lacquer tree(Rhus verniciflua) that collected Rhus lacquer in summer, analyzing a relationship between several factors - diameter, tree weight, weight of Woojuk and bark. The weight of Woojuk averaged was made up $48\%$ of the tree on average. As the weight of the tree increased, however, the Woojuk showed the rising trend. It was turned out that the tree size for making 1kg of dry bark must be at least DBB 8cm. The result on Woojuk's bark was that $43.3\%$ of total trees produced a green bark of 1.1kg to 1.5kg, and most of them put out 1.5kg and less. Also the rate of trees to make 0.6kg to 1.0kg of dry bark was highest in $50.8\%$, but its production in most trees was 1.0kg and below. As the moisture content of a green bark averaged $39\%$, it is estimated that the production of 1kg in dry bark requires at least 6kg of top branch in lacquer tree.
Keywords
Rhus verniciflua; Rhus lacquer; lacquer tree; green bark; dry bark;
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