충남지역 리기다소나무림의 지표층 산불 연료 특성 분석

Abstract

This study purpose to analyze the characteristics of surface fuel load and estimate potential crown fire transition hazards in Pinus Rigida stands. Surface fuels were collected from 96 samples in Pinus Rigida stands. A wildfire spread equation presented in foreign countries was applied to analyze the potential crown fire transition hazard in Korea. The results of this study showed that the percentage of dead leaves in the surface fuel was over 70%, followed by snag, herb, shrubs. As the age increased the amount of fuel for shrubs and herbs decreased, while the amount of fuel for dead leaves and snag increased. The critical values to assessment of surface fire intensity was 1223.95 kW/m in the Ⅱ age class, 2249.24 kW/m in the Ⅲ age calss, 2954.95 kW/m in the Ⅳ age class, 3125.29 kW/m in the Ⅴ age class. the age increased the higher the flame intensity required for crown fire transition. The critical values to assessment of flame length was 2.033m in the Ⅱ age class and 3.275m in the Ⅲ age class. The results if this study were used to develop a wildfire fuel model for coniferous species in South Korea.