한국농림기상학회지 (Korean Journal of Agricultural and Forest Meteorology)

  • 제14권3호
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  • Pages.108-118
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  • 2012
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  • 1229-5671(pISSN)
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  • 2288-1859(eISSN)
한국농림기상학회 (Korean Society of Agricultural and Forest Meteorology)
권호 표지
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대기 이산화탄소 증가와 질소 시비가 백합나무 유묘의 생장과 탄소 흡수에 미치는 영향

Effects of Elevated Atmospheric CO2 and Nitrogen Fertilization on Growth and Carbon Uptake of Yellow Poplar Seedlings

  • 정미숙 (국립산림과학원 산림유전자원부) ;
  • 한심희 (국립산림과학원 산림유전자원부) ;
  • 김두현 (국립산림과학원 산림유전자원부) ;
  • 이재천 (국립산림과학원 산림유전자원부) ;
  • 김판기 (경북대학교 산림환경자원학과)
  • Chung, Mi-Sook (Department of Forest Genetic Resources, Korea Forest Research Institute) ;
  • Han, Sim-Hee (Department of Forest Genetic Resources, Korea Forest Research Institute) ;
  • Kim, Du-Hyun (Department of Forest Genetic Resources, Korea Forest Research Institute) ;
  • Lee, Jae-Cheon (Department of Forest Genetic Resources, Korea Forest Research Institute) ;
  • Kim, Pan-Gi (Department of Forest Resources and Environment, Kyungpook National University)
  • 투고 : 2012.02.15
  • 심사 : 2012.09.07
  • 발행 : 2012.09.30
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초록

본 연구는 기후변화 하에서 우리나라 기후와 산림토양에 적합한 수종을 개발하기 위해서, 상부 개방형 온실(Open Top Chamber)을 이용하여, $CO_2$ 농도를 대기보다 1.4배와 1.8배 증가시킨 상태에서, 질소 농도에 따른 백합나무의 생리적 반응을 조사하고자 실시하였다. 백합나무 유묘의 건중량은 모든 $CO_2$ 농도 하에서, 질소 시비량의 증가와 함께 증가하였다. 그러나 $CO_2$ 농도 증가에 따른 백합나무 건중량 변화는 질소 시비 농도에 따라 다른 결과를 보였다. 총 엽록소와 카로테노이드 함량은 모든 질소 시비구에서 $CO_2$ 농도 증가와 함께 증가하였으나, 질소 시비에 대한 효과는 $CO_2$ 농도에 따라 차이가 있었다. 백합나무의 광합성 특성은 $CO_2$ 측정 농도, $CO_2$ 처리 농도 및 질소 시비 농도에 따라 차이를 보였으며, 기공전도도와 증산속도는 $CO_2$ 처리에 의해 증가하였다. 백합나무의 탄소고정효율은 $CO_2$ 농도 증가와 함께 증가하는 경향을 보였으나, 질소 시비구에서는 $CO_2$ 농도 증가에 의해 오히려 감소하였다. 백합나무의 잎, 줄기, 뿌리에 축적된 질소와 탄소 함량은 $CO_2$ 증가와 질소 시비와 함께 증가하였다. 결론적으로 $CO_2$ 농도가 높은 상태에서 백합나무의 생리적 특성과 탄소 흡수 능력은 질소 시비에 의해서 개선되거나 증가하였지만, $CO_2$ 농도에 따라 크게 영향을 받았다.

To investigate the responses of yellow poplar (Liriodendron tulipifera L.) seedlings to the interactive effects of the elevated atmospheric $CO_2$ level and nitrogen addition, we measured biomass, photosynthetic pigments, photosynthesis, and the contents of nitrogen (N) and carbon (C) from the seedlings after 16 weeks of the treatments. Yellow poplar seedlings were grown under the ambient ($400{\mu}mol\;mol^{-1}$) and the elevated (560 and $720{\mu}mol\;mol^{-1}$) CO2 concentratoins with three different N addition levels (1.2, 2.4, and $3.6g\;kg^{-1}$) in the Open Top Chambers (OTC). The dry weight of the seedlings enhanced with the increased N levels under the elevated $CO_2$ concentrations and the increment of the dry weight differed among the different N levels. Photosynthetic pigment content of the yellow poplar leaves also increased with the increase of the $CO_2$ concentration levels. The effects of the N levels on the photosynthetic pigment content, however, were significantly different among the $CO_2$ levels. Photosynthetic rates were affected by the levels of $CO_2$ and N concentrations. Stomatal conductance and transpiration rates increased with increasing $CO_2$ concentration. The carboxylation efficiency of the seedlings without N addition increased under the higher $CO_2$ concentrations whereas that with N addition decreased under the elevated $CO_2$ concentrations. Nitrogen and carbon uptake in leaf, stem, and root increased with the elevated $CO_2$ concentration level and N addition. In conclusion, under the elevated $CO_2$ concentrations, physiological characteristics and carbon uptake of the yellow poplar seedling were improved and increased with N addition.

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피인용 문헌

  1. Effects of Elevated CO2Concentration and Temperature on Physiological Characters of Liriodendron tulipifera vol.15, pp.3, 2013, https://doi.org/10.5532/KJAFM.2013.15.3.145
  2. Influence of Elevated CO2and Air Temperature on Photosynthesis, Shoot Growth, and Fruit Quality of 'Fuji'/M.9 Apple Tree vol.15, pp.4, 2013, https://doi.org/10.5532/KJAFM.2013.15.4.245