Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Effects of Postfire Logging on Bird Populations and Communities in Burned Forests

산불 발생 지역의 피해목 벌채에 따른 조류 개체군과 군집의 변화

  • Choi, Chang-Yong (Migratory Birds Center, National Park Research Institute) ;
  • Lee, Eun-Jae (Research Institute for Agriculture and Life Sciences, Seoul National University) ;
  • Nam, Hyun-Young (School of Biological Sciences, Seoul National University) ;
  • Lee, Woo-Shin (Department of Forest Sciences, Seoul National University)
  • 최창용 (국립공원연구원 철새연구센터) ;
  • 이은재 (서울대학교 농업생명과학연구원) ;
  • 남현영 (서울대학교 생명과학부) ;
  • 이우신 (서울대학교 산림과학부)
  • Received : 2007.02.02
  • Accepted : 2007.03.12
  • Published : 2007.03.31
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Abstract

We investigated the effects of postfire logging on bird populations and communities through 57 point counts in unburned, burned and logged burned plots of coniferous forests in Samcheok, Korea. We found that lower species richness, abundance, and diversity in logged plots where were controlled by a typical postfire management. As results of guild analysis for nest sites and food resources, postfire logging reduced densities of ground-shrub nesters, primary and secondary cavity nesters, but was also related to reduction in densities of some foraging groups such as timber drillers and foliage searchers. These results suggest that snag-retention is essential for birds in burned forests and that postfire logging is incompatible with the maintenance of bird populations and communities. Consequently we need to develope guidelines of postfire management for snag-retention in burned forests through intensive researches focused on some target species such as Great spotted woodpeckers Dendrocopos major.

산불 발생 지역의 피해목 벌채가 조류의 개체군 및 군집에 미치는 영향을 파악하기 위해 강원도 삼척시의 침엽수림 산불 피해지에서 2005년부터 2006년까지 총 57회의 정점 조사를 실시하였다. 그 결과 산불로 인해 발생한 피해목을 제거하는 산불 후 관리는 종 풍부도(richness), 수도(abundance), 다양성(diversity)의 측면에서 조류의 서식에 매우 불리한 여건을 조성하였다. 길드 분석 결과 피해목 벌채 이후 지상 및 하층식생에서 번식하는 조류(ground-shrub nesters), 나무 구멍에서 번식하는 수동 영소성 조류(davity nesting birds) 등의 서식 밀도가 감소하였으며, 나무에 구멍을 뚫고 먹이를 찾는 조류(timber driller)와 수관층에서 먹이를 찾는 조류(foliage searcher) 역시 피해목 벌채 이후 서식 밀도가 감소하였다. 따라서 산불 발생 지역의 조류 군집을 보전하기 위해서는 일정 수준의 피해목 존치가 필수적이며, 피해목 존치에 대한 산불 후 관리 기준을 수립하기 위해 오색딱다구리(Dendrocopos major) 등 특정 대상 종에 대한 집중적인 연구가 필요하다.

Keywords

Acknowledgement

Supported by : 국립산림과학원

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