Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Species Composition Dynamics and Seedling Density Along Altitudinal Gradients in Coniferous Forests of Seorak Mountain

설악산 상록침엽수림의 고도별 종조성 및 치수 밀도 변화

  • Kim, Ji-Dong (Forest Bioresources Survey Team, Baekdudaegan National Arboretum) ;
  • Byeon, Seong Yeob (Research Planning and Coordination Team, Baekdudaegan National Arboretum) ;
  • Song, Ju Hyeon (Department of Forest Resources, Kongju National University) ;
  • Chae, Seung Beom (Division of Forest Bioinformation, National Institute of Forest Science) ;
  • Kim, Ho Jin (Department of Forest Resources, Kongju National University) ;
  • Lee, Jeong Eun (Department of Forest Resources, Kongju National University) ;
  • Yun, I Seul (Department of Forest Resources, Kongju National University) ;
  • Yun, Chung Weon (Department of Forest Resources, Kongju National University)
  • 김지동 (국립백두대간수목원 생물자원조사팀) ;
  • 변성엽 (국립백두대간수목원 연구전략팀) ;
  • 송주현 (공주대학교 산림자원학과) ;
  • 채승범 (국립산림과학원 산림생명정보연구과) ;
  • 김호진 (공주대학교 산림자원학과) ;
  • 이정은 (공주대학교 산림자원학과) ;
  • 윤이슬 (공주대학교 산림자원학과) ;
  • 윤충원 (공주대학교 산림자원학과)
  • Received : 2019.12.24
  • Accepted : 2020.03.19
  • Published : 2020.06.30
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Abstract

The vertical distribution of vegetation can be classified according to the altitudinal gradient and the distribution of species along this gradient. The purpose of this study was to analyze the vegetation structure, species composition, dimensional density, and change according to altitude. These data illustrate the distribution of coniferous forest by altitude. By order of importance, the vegetation structure of this mixed forest consisted of Abies nephrolepis (12.2), Pinus koraiensis (10.86), and Acer komarovii (8.11). As a result of species composition according to the altitude, A. nephrolepis and Maianthemum bifolium increased in importance with increasing altitude. Tripterygium regelii emerged between 1,400 m and 1,600 m, which indicates that forest gaps were frequent at that elevation. The species diversity index was the highest from 1,400-1,500 m and coincided with the presence of forest gaps. The changes in A. nephrolepis of evergreen conifers increased significantly from 402 ± 5.4 ha.-1 to 528 ± 11.6 ha.-1 for two years, and decreased from 57 ± 1.3 ha.-1 to 56 ± 1.6 ha.-1 for P. koraiensis. The density of A. nephrolepis and P. koraiensis seedlings significantly increased at 1,500-1,600 m. The results of this study can be used as a basis to identify the mast seeding year with the increase or decrease of seedlings. In addition to documenting the evergreen conifer population of the Seorak Mountain, these results can be built upon for future monitoring of seedlings mortality.

식생의 수직적 분포는 고도구배에 따라 구분할 수 있으며, 수종의 분포패턴이 다르게 나타날 수 있다. 본 연구는 상록침엽수림의 고도별 분포 변화에 대한 기초자료를 제시하기 위해, 식생구조, 고도에 따른 종조성, 치수 밀도와 고도에 따른 변화에 대해 분석하였다. 중요치 분석 결과, 식생구조는 분비나무(12.2), 잣나무(10.86), 시닥나무(8.11) 등의 혼효림 구조로 나타났다. 고도에 따른 종조성 결과로, 분비나무와 두루미꽃은 해발고도가 증가함에 따라 중요치가 함께 증가하였다. 1,400 m에서 1,600 m 구간 사이에서 미역줄나무의 출현은 숲 틈의 발생이 빈번함을 알 수 있었다. 종다양성지수는 1,400-1,500 m 구간에서 가장 높게 나타나 위에 숲 틈 발생의 당위성을 반영해주는 결과로 적절하였다. 상록침엽수의 치수밀도 변화는 2년 동안 분비나무가 402 ± 5.4 ha-1에서 528 ± 11.6 ha-1으로 유의한 수준에서 증가하였고, 잣나무는 57 ± 1.3 ha-1에서 56 ± 1.6 ha-1으로 감소하였다. 해발고도별 치수밀도 변화는 1,500-1,600 m에서 분비나무와 잣나무 모두 대폭 증가하였다. 본 연구결과는 치수의 증가나 감소 경향이 mast seeding 해를 파악해야 하기 위한 기초자료로써 활용될 수 있다. 따라서 설악산의 상록침엽수종 개체군뿐만 아니라 치수의 생존 및 사망에 대한 지속적인 모니터링에 본 연구결과가 활용되길 기대해본다.

Keywords

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