Development of Local Stem Volume Table for Pinus densiflora S. et Z. Using Tree Stem Taper Model

Center for Forest & Climate Change, Hoegi-ro, Dongdaemen-gu, Seoul 130-712, Korea(Received October 31, 2014; Revised November 7, 2014; Accepted November 7, 2014)ABSTRACTCurrent volume tables might underestimate or overestimate the volumes of individual trees in aspecific region because the tables were made using the data from broad regions within South Korea.Therefore, to solve this problem, this study was conducted to develop local stem volume tablesreflecting the local growth pattern and properties using stem taper equations in the regions ofHongcheon and Yeongju. We developed the local stem volume table for Pinus densiflora, which is thewidely planted species in South Korea. To derive the most suitable taper equation for estimating thestem volume of region, three models of Max & Burkhart, Kozak and Parresol et al. were applied andtheir fitness were statistically analyzed by using the Fitness Index, Bias, and Standard Error of Bias.The result showed that there is a significant difference among the three models, and the Fitness Indexof the Kozak model was highest compared to the other models. Therefore, the Kozak model waschosen for generating stem taper equation and stem volume tables for P. densiflora. The result fromthe developed stem volume tables of each region was compared to the current stem volume tables withdriven by the data of tree growth obtained throughout the nation. The result showed that there is asignificant difference (0.000<α=0.05) in two regions, Hongcheon and Yeongju, and also there is asignificant difference (0.000<α=0.05) between the two regions.Key words: Stem volume table, Stem taper equations, Local stem volume table, Kozak model