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Analysis of the Final Cutting Ages in Quercus variabilis Coppice Forests

굴참나무 맹아갱신지의 벌기령 추정

  • Park, Joon Hyung (Forest Technology and Management Research Center, National Institute of Forest Science) ;
  • Chung, Sang Hoon (Forest Technology and Management Research Center, National Institute of Forest Science) ;
  • Kim, Sun Hee (Forest Technology and Management Research Center, National Institute of Forest Science) ;
  • Kim, Hyungho (Department of Forest Resources, Gyeongsang National University(Institute of Agriculture & Life Science)) ;
  • Lee, Sang Tae (Forest Technology and Management Research Center, National Institute of Forest Science)
  • 박준형 (국립산림과학원 산림기술경영연구소) ;
  • 정상훈 (국립산림과학원 산림기술경영연구소) ;
  • 김선희 (국립산림과학원 산림기술경영연구소) ;
  • 김형호 (경상대학교 산림자원학과(농업생명과학연구원)) ;
  • 이상태 (국립산림과학원 산림기술경영연구소)
  • Received : 2020.08.14
  • Accepted : 2020.09.28
  • Published : 2020.12.31

Abstract

we developed a stand density management diagram for Quercus variabilis in order to predict the final cutting ages of coppice forests based on management objectives. The sample data were classified into two groups: 603 data points for analysis and 113 data points for verification. Using these data, a stand density management diagram was constructed and a goodness-of-fit test was performed. The explanatory power (R2) of the constituent models for the stand density management diagram was 0.732 for the equivalent height curve and 0.990 for the equivalent diameter curve. According to the analysis of the final cutting age rangeof the highest production, the final cutting ages for 900 buds remaining per hectare was 42-44 years, and that for the 1,800 buds remaining per hectare was 38-42 years. With the third-grade log set as the production target, the final cutting age range with site index 16 and 14 was 25-28 years and 29-33 years, respectively. The results of this study provide baseline data for establishing a management plan for Q. variabilis coppice stands.

본 연구는 굴참나무 임분밀도관리도 개발을 통해 맹아갱신림의 경영목표별 벌기령을 예측하고자 하였다. 분석에 활용된 표준지 조사자료는 분석용 자료 603개소와 검증용 자료 113개소로 분류하였고, 이를 이용하여 임분밀도관리도의 개발과 적합도 검증을 실시하였다. 임분밀도관리도 구성 모델의 설명력(R2)은 등평균수고곡선식 0.732, 등평균직경곡선식 0.990으로 분석되었다. 재적 생산 최대 벌기령을 분석한 결과, ha당 900본의 맹아 잔존 시 42~44년으로 나타났고, ha당 1,800본을 잔존한 경우 38~42년으로 분석되었다. 3등급재 원목을 생산목표로 설정하였을 때의 벌기령은 지위지수 16일 때 25~28년이 소요되었고, 지위지수 14는 29~33년이 소요되는 것으로 나타났다. 본 연구의 결과는 굴참나무 맹아갱신 임분의 경영계획 수립에 있어서 기초자료로 활용될 수 있을 것으로 판단된다.

Keywords

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