Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
권호 표지

Initial Responses of Understory Vegetation to 15% Aggregated Retention Harvest in Mature Oak (Quercus mongolica) Forest in Gyungsangbukdo

경상북도 신갈나무 성숙림에서 15% 군상잔존벌 이후 초기 하층식생 변화

  • Ming, Zhang (Department of Forest Environment and Resources, Kyungpook National University) ;
  • Kim, Jun-Soo (Department of Forestry, Kyungpook Natioal University) ;
  • Cho, Yong-Chan (Plant Conservation Division, Korea National Arboretum) ;
  • Bae, Sang-Won (Division of Forest Soil and Water Conservation, Korea forest Research Institute) ;
  • Yun, Chung-Weon (Department of Forestry, Kongju National University) ;
  • Byun, Bong-Kyu (Department of Biological Science & Biotechnology, Hannam University) ;
  • Bae, Kwan-Ho (School of Ecology & Environmental System, Kyungpook National University)
  • ;
  • 김준수 (경북대학교 임학과) ;
  • 조용찬 (국립수목원 산림자원보존과) ;
  • 배상원 (국립산림과학원 산림수토보전과) ;
  • 윤충원 (공주대학교 산림자원학과) ;
  • 변봉규 (한남대학교 생명시스템과학과) ;
  • 배관호 (경북대학교 생태환경시스템학부)
  • Published : 2013.06.30
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Abstract

This study observed changes of understory vegetation to evaluate the role of forest aggregate after 15% aggregated retention harvest in mature oak forest (> 100 years) in Gyungsangbukdo Bonghwagun in 2010 and 2011. Spontaneous responses of understory vegetation cover (%), species richness, abundance of plant growth forms (herbaceous and woody plants), and overall attributes (by Ordination analysis) were estimated in aggregate area (0.15 and n=36) and clear cut area (0.85 and n=192) in experimental site and control site (1 and n=300). Based on ordination analysis, overall change of species composition in aggregated sites were relatively lower than in harvest area. Right after treatment, total cover of cutted area slightly decreased from 15.6% to 14.7%, and species richness increased from 14 species to 22 species. Cover and richness in the both of aggregate and control sites increased. In plant growth forms, 15% aggregate harvest revealed positive effects on the abundance (cover and richness) of herbaceous plants than woody group. After retention treatment, overall, edge effect likely played major component of vegetation changes in aggregate forest and in harvested area, mechanical damage from harvest operation and change of forest structure by clear cutting were critical. As pre-treatment data, which are rare in ecological studies in Korea, were critical for interpretation between patterns that may have arisen from spatial distributions in the original forest, our experimental design have higher opportunity for long term monitoring on the effect of forest aggregate and vegetation regeneration in clear cutted area.

본 연구에서는 15% 군상잔존벌채의 식생 및 종다양성 보전 효과를 분석하기 위하여 경상북도 봉화군 신갈나무 성숙림(임령 100년 이상)에서 처리 전 후 조사를 통하여 직접적인 식생 변화를 관찰하였다. 벌채구(0.85), 잔존구(0.15) 및 대조구(1.0)에 1의 초본방형구를 각각 192개, 36개, 300개 설치한 후 하층식생의 피도 및 종다양성의 변화, 초본 및 목본의 생육형별 변화, 그리고 군집 변화(서열분석)등을 분석하였다. 서열분석 결과, 잔존구는 벌채구와 비교하여 전체적인 식생 속성 변화가 낮게 나타났다. 처리 직후, 벌채구는 기계적 피해에 의해 피도가 약간 감소(15.6%에서 14.7%)하였으며, 종풍부도(14종에서 22종)는 증가하였다. 잔존구 및 대조구는 피도 및 종풍부도 모두 증가하였다. 생육형 측면에서 15% 잔존벌채 이후 초기변화는 목본성 종 보다는 초본성 종의 양 증가에 영향을 미치는 것으로 나타났다. 처리 이후, 잔존구는 가장자리 증가에 의한 환경 변화 및 그에 따른 반응을 나타냈고, 벌채구는 벌채교란에 기인한 기계적 피해를 포함한 임분 구조 변화에 의한 반응이 나타났다. 본 연구는 임분 처리 전 자료를 수집하여 진행되고 있다는 점에서 지속적 관찰의 필요성이 높다.

Keywords

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