Abstract
ABSTRACTStem volume models using diameter at breast height (DBH) and height were developed for Pinus densiflora, Pinus koraiensis, and Larix kaempferi. The data were obtained from Gangwon, Gyeonggi, and North Gyeongsang provinces in South Korea, and the sample trees felled were used to provide the parameter estimates of volume equations. The combined-variable function, , was shown to be the best model through the validation of the equation. Also, the model using only DBH, was also evaluated to be applicable in the field. These models revealed higher accuracy when compared with previous studies. Both equations are considered to be easily used in the field.
Highlights
In Korea, Korean red pine (Pinus densiflora Siebold & Zucc.), Korean white pine (Pinus koraiensis Siebold & Zucc.), and Japanese larch (Larix kaempferi (Lamb.) Carriere) have been widely used as lumber, pulp, and other wood materials (Korea Forest Research Institute 2012a, 2012b, 2012c)
The data available for this study were collected from L. kaempferi, P. koraiensis, and P. densiflora stands located in Gangwon, North Gyeongsang, and Gyeonggi provinces of South Korea (Figure 1)
The volume model of this study is highly recommended for P. koraiensis, especially, in which diameter at breast height (DBH) of a standing tree is bigger than small class (DBH < 16 cm) in South Korea
Summary
In Korea, Korean red pine (Pinus densiflora Siebold & Zucc.), Korean white pine (Pinus koraiensis Siebold & Zucc.), and Japanese larch (Larix kaempferi (Lamb.) Carriere) have been widely used as lumber, pulp, and other wood materials (Korea Forest Research Institute 2012a, 2012b, 2012c). These trees are important commercial species and have been intensively planted in South Korea since the 1960s (Korea Forest Service 2016). The stem volume equations of a species have been subdivided according to regional characteristics for accurate commercial use in other developed countries (Beck 1963; Myers 1972; Queen and Pienaar 1977; Amateis and Burkhart 1987; Clark and Saucier 1990)
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