Journal of Environmental Impact Assessment (환경영향평가)

Korean Society of Environmental Impact Assessment (한국환경영향평가학회)
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A Study on the Recovery Rate of Vegetation in Forest Fire Damage Areas Using Sentinel-2B Satellite Images

Sentinel-2B 위성 영상을 활용한 산불 피해지역 식생 회복률에 관한 연구

  • Gumsung Cheon (Team of Ecosystem Service, National Institute of Ecology) ;
  • Kwangil Cheon (Team of Ecosystem Service, National Institute of Ecology) ;
  • Byung Bae Park (Department of Environment and Forest Resources, Chungnam National University)
  • Received : 2023.11.06
  • Accepted : 2023.11.27
  • Published : 2023.12.31
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Abstract

The amount of damage and the area of damage to forest fires are increasing globally, and the effectiveness analysis of the restoration method after the damage is performed insufficient. This study calculated the area of forest fire damage was calculated using Sentinel-2B satellite images and stack map and the intensity of forest fire damage is analyzed according to the forest type. In addition, the vegetation index was calculated using various wavelength bands. Based on the results, the vegetation resilience by the restoration method was quantitatively. As results, areas with a high proportion of coniferous forests suffered high intensity forest fire damage, and areas with a relatively high ratio of mixed and broad-leaved forests tended to have low forest fire damage. Also, artificial forests showed a recovery of about 92.7% compared to before forest fires and natural forests showed a recovery of about 99.6% from the result of analyzing vegetation resilience in artificial and natural forests after forest fires. Accordingly, it was confirmed that natural forests after forest fire damage had superior vegetation resilience compared to artificial forests. It can be proposed that this study is meaningful in providing important information for efficiently restoring the affected target site and the selection criteria for trees to reduce forest fire damage through the evaluation of vegetation resilience by the intensity of forest fire damage and restoration methods.

산불에 대한 피해액과 피해 면적은 전 세계적으로 커지고 있지만 피해 후 복원 방법에 따른 효과연구는 부족한 현실이다. 본 연구는 Sentinel-2B 위성 영상과 임상도를 활용하여 산불 피해 면적을 산출하고, 임상에 따른 산불 피해 강도를 분석하였다. 또한, 다양한 파장대를 활용하여 식생지수를 계산하고, 이를 토대로 복원 방법에 따른 식생 회복력을 -1.0에서 1.0 범위 내에서 정량적으로 분석하였다. 그 결과 침엽수림 비율이 높은 지역에서 높은 강도의 산불 피해가 발생하였고, 상대적으로 혼효림과 활엽수림의 비율이 높은 지역에서 낮은 강도의 산불 피해 경향을 보였다. 산불 발생 이후 인공림과 천연림에서의 식생 회복률을 분석한 결과, 인공림은 산불 발생 이전 대비 약 92%, 천연림은 약 101% 식생을 회복하였으며 인공림보다 천연림에서 식생 회복력이 우수한 것을 확인할 수 있었다. 본 연구는 임상에 따른 산불 피해 강도를 분석하고 복원 방법에 따른 식생 회복력을 평가함으로써 산불 피해를 줄이기 위한 수목 선정에 기초자료를 제공하고 복원방법에 따른 식생회복력을 비교하는데 의의가 있다.

Keywords

Acknowledgement

본 연구는 국립생태원 생태계서비스 평가 기반 정책 결정 지원 체계 수립(NIE-고유연구-2023-3)" 및 "기후변화 적응을 위한 의사결정형 통합 영향평가 모형요소 기술개발:생태계(2022003570001)"의 지원을 받아 수행되었습니다.

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