Journal of agriculture & life science (농업생명과학연구)

Institute of Agriculture & Life Science, Gyeongsang National University (경상대학교 농업생명과학연구원)
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Thinning Effect on Vegetation Structure and Stand Characteristics of Oak Stands

간벌에 따른 참나무림의 식생구조 및 임분특성 변화

  • Park, Joonhyung (Southem Forest Research Center, Korea Forest Research Institute) ;
  • Kim, Suk Kwon (Forest Practice Research Center, Korea Forest Research Institute) ;
  • Lee, Sang Tae (Forest Practice Research Center, Korea Forest Research Institute) ;
  • Lee, Kwangsoo (Southem Forest Research Center, Korea Forest Research Institute) ;
  • Kim, Hyungho (Department of Forest Environmental Sciences, Gyeongsang National University (Institute of Agriculture and Life Science))
  • 박준형 (국립산림과학원 남부산림자원연구소) ;
  • 김석권 (국립산림과학원 생산기술연구소) ;
  • 이상태 (국립산림과학원 생산기술연구소) ;
  • 이광수 (국립산림과학원 남부산림자원연구소) ;
  • 김형호 (경상대학교 산림환경자원학과(농업생명과학연구원))
  • Received : 2013.10.09
  • Accepted : 2013.11.28
  • Published : 2013.12.31
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Abstract

This study was performed to identify the thinning effect on stand vegetation structure and stand characteristics of the oak stands, located in Bongjeon-ri, Seoha-myeon, Hamyang-gun. Stand data were collected at 15 plots in 12 thinned stands and 3 unthinned stands, and tree ring growth of core samples (5 trees per each plot) was measured to analyze the growth difference between thinned and unthinned stands. Dominant trees of the tree layer of the thinned stands were Quercus mongolica, Quercus serrata and Quercus variabilis; the sub-tree layer were Styrax obassia, Cornus controversa, Alnus hirsuta, and Quercus mongolica; Sasa borealis was predominant in the shrub layer. DBH, crown length, and crown width were larger in thinned stands than in unthinned stands, but tree height was higher in unthinned stands than in thinned stands. Average ring growth of the thinned and unthinned stands was 1.82 mm/year, 1.38 mm/year, respectively. Therefore, thinning improved the growth of DBH, crown width, and crown length in oak stands.

이 연구는 참나무 임분을 대상으로 간벌에 의한 식생 구조 및 임분특성 변화를 비교하여 간벌 효과를 구명하고자 하였다. 이를 위해 경남 함양군 서하면 봉전리에 위치한 시업지 12개소, 비시업지 3개소의 표준지를 선정하여 식생 및 임분조사를 실시하였고 각 표준지별 표준목을 5본씩 선정하여 목편을 채취한 후 연륜 생장량을 분석하였다. 그 결과 간벌시업지 교목층에서는 신갈나무, 졸참나무, 굴참나무와 같은 참나무류가 75%이상 우점하고 있었으며, 아교목층에서는 쪽동백나무, 층층나무, 물오리나무, 굴참나무 등이 분포하고 있었다. 관목층에서는 조릿대가 넓게 분포하여 우점하고 있었다. 임분내 흉고직경, 수관길이, 수관폭은 간벌시업지가 높게 나타났지만, 수고는 비시업지가 높은 것으로 나타났다. 간벌 이후 평균 연륜생장량은 간벌시업지 1.82mm, 비시업지 1.38mm로 간벌시업지가 큰 것으로 분석되었다 (p<0.05). 따라서 참나무류 임분의 간벌은 임분내 개체목의 흉고직경 및 수관부의 생장에 효과적인 것으로 사료된다.

Keywords

Acknowledgement

Supported by : 국립산림과학원

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