Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Effect of Elevated $CO_2$ Concentration and Temperature on the Growth Response of Several Woody Plants, Including Two Endangered Species

$CO_2$ 농도와 온도증가가 목본성 수종 3종과 멸종위기 2종의 생육반응에 미치는 영향

  • Jang, Rae-Ha (Department of Biology, Kongju National University) ;
  • Kim, Hae-Ran (Department of Biology, Kongju National University) ;
  • You, Young-Han (Department of Biology, Kongju National University)
  • Received : 2013.04.15
  • Accepted : 2013.06.20
  • Published : 2013.06.30
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Abstract

Increasing global $CO_2$ concentration and temperature is leading to the phenomenon of global warming and impacting the growth of plants. In order to determine the effects of global warming on the woody plants of Korea, five woody species, Pinus densiflora (Korea's dominant species), Ginkgo biloba (a commonly used street tree), Quercus glauca (dominant species in sub-tropical forests), Quercus gilva and Abeliophylum distichum (both endangered species), were grown at control (ambient $CO_2$+ambient temperature) and treatment (elevated $CO_2$+elevated temperature) conditions in a glasshouse, and were monitored for their ecological response. Shoot lengths and number of leaves were measured once a month from April to October in 2010, and were again measured in November 2011. Shoot lengths of P. densiflora, G. biloba and Q. glauca were not significantly affected by elevated $CO_2$ and temperature conditions. However. those of Q. gilva and A. distichum were both higher for plants grown under treatment than for those grown under control. The number of leaves of five woody species was not significantly affected by elevated $CO_2$ and temperature. These results indicate that P. densiflora, G. biloba and Q. glauca react more favorably than Q. gilva and A. distichum (each of which are designated as endangered plants) under global warming situations.

$CO_2$ 농도 증가에 의한 지구온난화는 식물의 생장과 발달에 영향을 미친다. 이에 우리나라의 우점종인 소나무, 가로수로 많이 쓰이는 은행나무 그리고 난대림의 우점종인 종가시나무와 멸종위기 식물로 지정된 개가시나무, 미선나무의 유식물을 대상으로 $CO_2$ 농도와 온도증가를 증가시킨 지구온난화 처리구와 대조구로 나누어 실험을 하였다. 2010년 4월부터 2011년 11월까지 지상부 길이와 잎 수를 측정하였다. 그 결과 소나무, 은행나무 그리고 종가시나무의 지상부 생장량은 대조구와 지구온난화 처리구에서 차이가 없었다. 개가시나무와 미선나무의 지상부생장량은 대조구보다 처리구에서 높았으나, 잎 수는 $CO_2$ 농도와 온도증가에 의해 영향을 받지 않았다. 이상으로 볼 때, 지구온난화 조건이 되면 우점하고 있는 소나무, 은행나무, 종가시나무보다 멸종위기식물인 미선나무와 개가시나무의 지상부 생장에 유리할 것이다.

Keywords

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