Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Photosynthetic Capacity and Water Use Efficiency under Different Temperature Regimes on Healthy and Declining Korean Fir in Mt. Halla

한라산 구상나무 건전개체와 쇠약개체의 온도변화에 따른 광합성능력과 수분이용효율

  • Lim, Jong-Hwan (Department of Forest Environment, Korea Forest Research Institute) ;
  • Woo, Su-Young (Department of Environmental Horticulture, University of Seoul) ;
  • Kwon, Mi Jeong (National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Chun, Jung Hwa (Department of Forest Environment, Korea Forest Research Institute) ;
  • Shin, Joon Hwan (Department of Forest Environment, Korea Forest Research Institute)
  • 임종환 (국립산림과학원 산림환경부) ;
  • 우수영 (서울시립대학교 환경원예학과) ;
  • 권미정 (서울대학교 농업과학공동기기센터) ;
  • 천정화 (국립산림과학원 산림환경부) ;
  • 신준환 (국립산림과학원 산림환경부)
  • Received : 2006.08.23
  • Accepted : 2006.10.17
  • Published : 2006.12.30
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Abstract

We investigated seasonal photosynthetic capacity and water use efficiency changes of Korean fir (Abies koreana Wils.) trees located at three sites around the peak of Mt. Halla, Witseorum, Youngsil and Jindallebat. At each sites, we chose healthy and declining individuals to examine the differences of physiological characteristics between them. Net photosynthetic capacity in $15^{\circ}C$ were lower than those of $20^{\circ}C$ and $25^{\circ}C$. The difference of net photosynthetic capacity between healthy and damaged trees was clear in June and August but damaged trees recovered with passing of the time. There was no difference between healthy and damaged trees in September on photosynthetic rate. Generally, water use efficiency (WUE) of damaged trees was higher than healthy trees.

한라산의 윗세오름, 영실(윗세오름과 영실사이), 진달래밭 등 3개 지역에서 구상나무의 광합성능력과 수분이용효율의 특성을 알아보기 위하여 시기별, 온도별, 그리고 지역별 건전개체와 쇠약한 개체에 대하여 조사를 수행하였다. 일반적으로 구상나무의 광합성능력은 $15^{\circ}C$일 때가 $20^{\circ}C$, $25^{\circ}C$일 때 보다 높았다, 6월과 8월의 경우 건전개체와 쇠약개체간의 광합성능력의 차이가 뚜렷했지만 9월에 쇠약개체의 광합성능력이 다시 회복되었다. 모든 개체에서 수분이용효율은 쇠약개체가 건전개체에 비해 높았다.

Keywords

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