솎아베기에 따른 산불연료량과 수관화 위험도 변화 연구 - 강원도 고성 소나무림 대상으로 -
Thinning Effect on Fuel Load and Crown Fire Hazard - A Case Study of Pinus Densiflora in Goseong, Gangwon Province -
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초록
본 연구는 숲가꾸기가 산불연료변화 및 산불확산에 미치는 영향을 분석하고자 수행하였다. 이를 위해산불에 취약한 고성지역에 대형산불 방지 소나무 숲 관리 시험지(고강도 처리구(40%), 저강도 처리구(20%) 대조구)를 조성하여 정기 모니터링 조사를 실시하였다. 본 연구 결과, 수관연료밀도는 강도 40% 0.263kg/m3, 강도 20% 0.417kg/m3, 대조구 0.530kg/m3으로 고강도 임분일수록 산림 내 가연연료양이낮게 분포하였으며, 솎아베기에 의해 산림내 가연연료량은 최대 53% 감소되어 산불위험성을 저감시키는효과를 보였다. 또한 고강도 처리구에서는 솎아베기에 의해 빛 투과량이 많아짐에 따라 1년차 대비내화성 수종으로 구성된 관목연료량이 17.6% 이상 증가하였다. 장기적인 측면에서 보았을 때 산불에취약한 소나무 임분의 위험성을 점차 저감시켜 줄 것으로 보인다. 본 연구는 숲가꾸기에 의한 산불위험성평가, 적정 내화수림대 조성 등 다양한 연구분야에 활용가능할 것으로 기대된다.
Abstract
This study was conducted to analyze the effect of forest management on forest fire fuel and forest fire spread. For this purpose, a wildfire prevention forest study site(intensity of 40%, 20%, control) was established in the Goseong, Gangwon province that is vulnerable to wildfires, and regular monitoring investigations were conducted. As a result of this study, the crown bulk density is thinning 40% 0.263kg/m3, thinning 20% 0.417kg/m3, and 0.530kg/m3 in the control, the lower the amount of crown fuel load. In high-strength treatment areas, the amount of shrub fuel composed of fire-resistant tree species increased by more than 17.6% compared to the first year as the amount of light transmission increased due to thinning. It is expected that this study can be used in various research such as forest fire risk assessment by forest management and creation of fire-resistant forest zones.
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