Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Site and Soil Factors Affecting Early Growth of Larix kaempferi Trees Planted in Harvested Larix kaempferi Plantations

지황 및 토양 인자가 낙엽송 벌채지 내 낙엽송 조림목의 초기 생장에 미치는 영향

  • Yang, A-Ram (Forest Technology and Management Research Center, National Institute of Forest Science) ;
  • Jeong, Jaeyeob (Forest Technology and Management Research Center, National Institute of Forest Science) ;
  • Cho, Min Seok (Forest Technology and Management Research Center, National Institute of Forest Science)
  • 양아람 (국립산림과학원 산림기술경영연구소) ;
  • 정재엽 (국립산림과학원 산림기술경영연구소) ;
  • 조민석 (국립산림과학원 산림기술경영연구소)
  • Received : 2018.01.16
  • Accepted : 2018.02.27
  • Published : 2018.03.31
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Abstract

This study was carried out to investigate site and soil factors affecting growth of root collar diameter (RCD) and height (HT) of Larix kaempferi trees planted in harvested Larix kaempferi plantations. We were found effect factors of growth of RCD and HT using 15 of site and soil factors. And then we made the growth estimated equations of RCD and HT of 6-years-old L. kaempferi tree by the derived affecting factors. The growth of RCD was affected in order of available phosphorus (+), effective soil depth (+), organic matter (-), sand separate in soil (-), pH (-), and elevation (-), and the coefficient of determination ($R^2$) of the growth estimated equation of RCD was 0.51. The growth of HT was affected in order of effective soil depth (+), elevation (-) slope (-), and available phosphorus (+) and the $R^2$ of the growth estimated equation of HT was 0.46. The growth of RCD and HT were commonly affected by effective soil depth, available phosphorus, and elevation. Therefore, planting site of L. kaempferi should be considered the mainly effect factors in order to keep better early growth based on the current study.

본 연구는 낙엽송 수확 벌채지 내 식재된 낙엽송 조림목의 초기 근원경과 수고 생장에 영향을 주는 지황 및 토양 인자를 구명하기 위해 수행되었다. 낙엽송 조림목의 생장에 영향을 줄 것으로 판단되는 낙엽송 조림지 내 지황 및 토양 인자 15개를 이용하여 생장 영향 인자를 도출하였다. 도출된 인자들로 최적 조합에 의해 6년생 낙엽송 조림목의 근원경과 수고 생장추정식을 개발하였다. 근원경 생장에 영향을 주는 인자들은 유효 인산(+), 유효 토심(+), 유기물(-), 모래 비율(-), pH(-), 고도(-) 등의 순으로 6개가 도출되었고, 근원경 생장추정식의 결정 계수($R^2$)는 0.51이었다. 수고 생장에 영향을 주는 인자들은 유효 토심(+), 고도(-), 경사(-), 유효 인산(+) 등의 순으로 4개가 도출되었고, 수고 생장추정식의 $R^2$는 0.46이었다. 낙엽송 조림목의 근원경과 수고 생장은 공통적으로 유효 토심, 유효 인산, 고도 인자들에 의해 영향을 받는 것으로 조사되었다. 따라서 도출된 영향 인자들은 낙엽송 조림목의 우수한 초기 생장을 위해 재조림 대상지 선정 시 고려해야 할 중요한 인자들로 작용할 것이다.

Keywords

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