Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
권호 표지

Effects of Experimental Warming on Growth of Quercus variabilis Seedlings

실외 실험적 온난화 처리가 굴참나무 묘목의 생장에 미치는 영향

  • Lee, Sun Jeoung (Department of Environmental Science and Ecological Engineering, Korea University) ;
  • Han, Saerom (Department of Environmental Science and Ecological Engineering, Korea University) ;
  • Yoon, Tae Kyung (Department of Environmental Science and Ecological Engineering, Korea University) ;
  • Chung, Haegeun (Department of Environmental Engineering, Konkuk University) ;
  • Noh, Nam Jin (River Basin Research Center, Gifu University) ;
  • Jo, Wooyong (Department of Environmental Science and Ecological Engineering, Korea University) ;
  • Park, Chan-Woo (Department of Environmental Science and Ecological Engineering, Korea University) ;
  • Ko, Suin (Department of Environmental Science and Ecological Engineering, Korea University) ;
  • Han, Seung Hyun (Department of Environmental Science and Ecological Engineering, Korea University) ;
  • Son, Yowhan (Department of Environmental Science and Ecological Engineering, Korea University)
  • 이선정 (고려대학교 환경생태공학과) ;
  • 한새롬 (고려대학교 환경생태공학과) ;
  • 윤태경 (고려대학교 환경생태공학과) ;
  • 정혜근 (건국대학교 환경공학과) ;
  • 노남진 (기후대학교 유역권과학연구센터) ;
  • 조우용 (고려대학교 환경생태공학과) ;
  • 박찬우 (고려대학교 환경생태공학과) ;
  • 고수인 (고려대학교 환경생태공학과) ;
  • 한승현 (고려대학교 환경생태공학과) ;
  • 손요환 (고려대학교 환경생태공학과)
  • Published : 2012.12.31
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Abstract

Climate change affects all biological processes in terrestrial ecosystems including photosynthesis, plant growth and productivity. This study was conducted to investigate the effects of experimental warming on the growth of Quercus variabilis 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. Shoot height and root collar diameter were measured in March 2011 and June 2012, respectively, and aboveground and belowground biomass were also measured in March 2011 and 2012, respectively. Shoot height and root collar diameter were significantly higher in warmed plots than in control plots, except for root collar diameter in March 2011. Increment (mm) of shoot height and root collar diameter were also higher in warmed plots ($529{\pm}30$, $5.6{\pm}0.5$) than in control plots ($464{\pm}28$, $4.5{\pm}0.4$). However, there were no significant differences between warmed and control plots except for root collar diameter. Increment (g/year) of total, aboveground and belowground biomass were higher in warmed plots ($36.88{\pm}6.52$, $11.91{\pm}3.44$, $24.97{\pm}3.73$) than in control plots ($30.59{\pm}5.51$, $8.73{\pm}1.66$, $21.86{\pm}3.88$), however, the differences were not statistically significant. Higher seedling growth and biomass of warmed plots might be related to the enhanced net photosynthetic rates in spring and the extended growing season.

기후변화는 생태계 구조와 기능에 영향을 미치고, 특히 기온 상승은 광합성과 생장기간을 변화시켜 식물의 생장에 영향을 줄 것으로 예상된다. 본 연구는 실외 실험적 온난화가 굴참나무(Quercus variabilis) 묘목의 생장에 미치는 영향을 알아보고자, 1-0 묘목을 2010년 4월에 식재하고, 2010년 11월부터 적외선등을 이용하여 온난화 처리구의 기온을 대조구보다 $3^{\circ}C$ 증가시켰다. 2011년 3월과 2012년 6월에 묘고와 근원경을 각각 측정하였고, 2011년과 2012년 3월에 지상부 및 지하부 생물량을 각각 조사하였다. 묘고 및 근원경은 온난화 처리구에서 대조구보다 높았으며, 2011년 3월 근원경을 제외하고 차이는 모두 통계적으로 유의하였다. 굴참나무 묘목의 생장량(mm)은 온난화 처리구 (묘고: $529{\pm}30$, 근원경: $5.6{\pm}0.5$)에서 대조구(묘고: $464{\pm}28$, 근원경: $4.5{\pm}0.4$)보다 높았으며, 근원경 생장량에서만 통계적으로 유의한 차이가 나타났다. 생물량 증가량(g/year)의 경우도 온난화 처리구(총 생물량: $36.88{\pm}6.52$, 지상부: $11.91{\pm}3.44$, 지하부: $24.97{\pm}3.73$)에서 대조구(총 생물량: $30.59{\pm}5.51$, 지상부: $8.73{\pm}1.66$, 지하부: $21.86{\pm}3.88$)보다 높았으나, 온난화 처리구와 대조구간 통계적으로 유의한 차이를 보이지 않았다. 온난화 처리에 따른 굴참나무 묘목의 생장 및 생물량 증가 경향은 생장기간과 봄철 순광합성률 증가와 관련이 있을 것으로 추정된다.

Keywords

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