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Allometric Equations of Crown Fuel Biomass and Analysis of Crown Bulk Density for Pinus densiflora  

Lee, Byung-Doo (Division of forest Disaster Management, Korea Forest Research Institute)
Won, Myoung-Soo (Division of forest Disaster Management, Korea Forest Research Institute)
Kim, Seon-Young (Division of forest Disaster Management, Korea Forest Research Institute)
Yoon, Suk-Hee (Division of forest Disaster Management, Korea Forest Research Institute)
Lee, Myung-Bo (Division of forest Disaster Management, Korea Forest Research Institute)
Publication Information
Journal of Korean Society of Forest Science / v.99, no.3, 2010 , pp. 391-396 More about this Journal
Abstract
To analyze the characteristics of canopy fuel in Pinus densiflora stand, which is essential to assess the crown fire hazard, allometric equations for estimation of crown fuel biomass were developed by subjectively categorized crown fuel component and crown bulk density was analyzed by available fuel component categories. Ten trees were destructively sampled at Pinus densiflora stand in Mt. Palgong in Daegu and their crown fuels were weighed separately for each fuel category by size classes and by living and dead. Regression equations that estimate crown fuel load by diameter at breast height(D) or additional total height(H) were derived. The adjusted coefficient of determination values were the highest (${R^2}_{adj}$=0.835-0.996) and standard error of estimate were the lowest (SEE=0.074-0.638) in the allometric equation lnWt=${\alpha}+{\beta}lnD+{\gamma}lnH$ in average. However, in needles and small branches categories, the differences in ${R^2}_{adj}$ and SEE between equations were not significant. Crown bulk density (CBD), which was calculated by crown fuel load divided by crown volume, was 0.067 kg/$m^3$ in average when only needles were considered as available crown fuel and 0.097 kg/$m^3$ when needles and branches (0-0.5 cm diameter) were considered. The increments of CBD of needles and small branches were little even when diameter at breast height increased.
Keywords
crown fuel biomass; crown bulk density; allometric equation; Japanese red pine;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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