Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Changes in Chlorophyll Contents and Net Photosynthesis Rate of 3-year-old Quercus variabilis Seedlings by Experimental Warming

실외 실험적 온난화가 3년생 굴참나무 묘목의 엽록소 함량 및 순광합성률 변화에 미치는 영향

  • Lee, Sun Jeoung (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University) ;
  • Han, Saerom (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University) ;
  • Yoon, Tae Kyung (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University) ;
  • Jo, Wooyong (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University) ;
  • Han, Seung Hyun (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University) ;
  • Jung, Yejee (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University) ;
  • Son, Yowhan (Department of Environmental Science and Ecological Engineering, Graduate School, Korea University)
  • 이선정 (고려대학교 대학원 환경생태공학과) ;
  • 한새롬 (고려대학교 대학원 환경생태공학과) ;
  • 윤태경 (고려대학교 대학원 환경생태공학과) ;
  • 조우용 (고려대학교 대학원 환경생태공학과) ;
  • 한승현 (고려대학교 대학원 환경생태공학과) ;
  • 정예지 (고려대학교 대학원 환경생태공학과) ;
  • 손요환 (고려대학교 대학원 환경생태공학과)
  • Published : 2013.03.31
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Abstract

Global warming affects terrestrial ecosystem productivity including photosynthesis and plant growth. This study was conducted to investigate the effect of experimental warming on chlorophyll contents and net photosynthetic rate of Quercus variabilis Blume seedlings. One-year-old Q. variabilis seedlings were planted in control and warmed plots in April 2010. The air temperature of warmed plots was increased by $3^{\circ}C$ compared to control plots using the infrared lamp from November 2010. Total chlorophyll contents were higher in warmed plots than those in control plots in May, July, August, September and October, 2012, however, the differences were statistically significant only in October. Net photosynthetic rates were also higher in warmed plots than those in control plots in May (57.0%), September (21.4%), and October (89.6%), however, the differences were significant only in May and October. Higher chlorophyll contents and net photosynthetic rate of warmed plots in spring and fall might be related to the extended growing season length.

전 지구적 온난화는 광합성과 생장을 포함한 육상생태계의 생산성에 영향을 미칠 것으로 예상되고 있다. 실외 실험적 온난화가 굴참나무(Quercus variabilis Blume) 3년생 묘목의 엽록소 함량 및 순광합성률에 미치는 영향을 알아보고자 1년생 묘목을 2010년 4월에 식재하고 2010년 11월부터 적외선등을 이용하여 온난화 처리구의 기온을 대조구보다 $3^{\circ}C$ 증가시켰다. 2012년 5월부터 10월까지 굴참나무 묘목의 총 엽록소 함량과 순광합성률을 측정한 결과 총 엽록소 함량은 5월, 7월, 8월, 9월, 10월에 온난화 처리구에서 대조구보다 높았으나, 이들 간의 차이는 10월에만 통계적으로 유의하였다. 또한 순광합성률은 5월, 9월, 10월에 온난화 처리구에서 대조구보다 각각 57.0%, 21.4%, 89.6% 높았으나, 5월과 10월에 이들 간의 차이가 통계적으로 유의하게 나타났다. 온난화 처리에 따른 굴참나무 묘목의 봄과 가을철 엽록소 함량 및 순광합성률 증가 경향은 생장을 일찍 시작하고 늦게까지 지속함으로써 생장기간이 늘어나는 것과 관련이 있을 것으로 추정된다.

Keywords

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