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Thinning Effect on Fuel Load and Crown Fire Hazard

  • Crisisonomy
  • Abbr : KRCEM
  • 2016, 12(8), pp.121-130
  • Publisher : Crisis and Emergency Management: Theory and Praxis
  • Research Area : Social Science > Public Policy > Public Policy in general

Byung Doo Lee 1 yeongtae bae 2 Sung-Cheol Jung 1

1국립산림과학원
2국민대학교

Accredited

ABSTRACT

This study analyzed the influence of a thinning operation on fire behavior, fire hazard and fuel load. Our research examined fuel load in surface, shrub, and crown layer by three degree of density (100, 200 and 300 trees per hectare) in both treated and untreated area. NEXUS 2.0, a system for assessing crown fire hazard into torching index and crowing index, and a BehavePlus program were used to analyze fire behavior. It was observed that, when the intensity of a thinning operation increased, the shrub fuel load also increased but the surface fuel and canopy fuel load decreased. Unlike a torching index with no big difference by thinning intensity, the more intensified a thinning operation became, the more reduced a crowning index was. The result of fire behavior analysis showed that the spreading rate was much faster and heat radiation was also very high in untreated sites. Not only fire intensity but flame length became weaken and shorten in uncontrolled area.

Citation status

* References for papers published after 2023 are currently being built.