Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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The Growth Response of Quercus dentata Sapling to the Environmental Gradients Treatment

환경구배처리에 따른 떡갈나무의 생육 반응

  • Lee, Sang-Kyoung (Department of Biology, Kongju National University) ;
  • You, Young-Han (Department of Biology, Kongju National University) ;
  • Yi, Hoon-Bok (Division of Environmental & Life Science, Seoul Women's University)
  • Received : 2010.03.20
  • Accepted : 2010.04.12
  • Published : 2010.04.30
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Abstract

Quercus dentata (Thunb. ex Murray) is a major tree found in dry habitats such as limestone areas of Korea. In order to characterize the ecological traits of Q. dentata, we treated Q. dentata saplings under four gradient levels of major environment factors such as light, soil moisture and nutrients for 5 months in a glass house. We then measured and analyzed growth differences among them. Regarding light, aboveground, belowground and plant biomass were highest at a high gradient and lowest at a low one. The root/shoot ratio was highest at the highest light gradient. Regarding moisture, no measured items were significantly affected by the moisture gradient. Regarding nutrients, aboveground, belowground and plant biomass were the highest at a slightly high gradient and the lowest at a gradient lower or higher than this. The root/shoot ratio was not significantly affected by the nutrient gradient. From these results, it was shown that the growth of Q. dentata was more affected by light and nutrients in the environment than moisture.

떡갈나무는 우리나라의 건조한 석회암 지역에 서식하는 주요한 교목이다. 본 연구는 떡갈나무의 생태적 특성을 밝히기 위하여 생육에 주요한 영향을 미치는 광, 수분 그리고 유기물 등의 환경요인을 각각 4구배로 하여 온실에서 유식물에 처리하여 생육반응을 관찰하고, 분석하였다. 광 구배에서 지상부, 지하부 그리고 식물체 무게는 높은 조건에서 잘 자랐고, 낮은 조건에서 못 자랐다. 지하부/지상부 비는 가장 높은 조건에서 제일 높았다. 수분 구배에서 모든 측정 항목에서 구배에 따른 생육의 차이가 없었다. 유기물 구배에서 지상부, 지하부 그리고 식물체 무게는 약간 높은 조건에서 잘 자랐고, 이보나 낮거나 높은 조건에서 못 자랐다. 이상으로 볼 때 떡갈나무의 생육은 수분 조건보다는 광 조건과 유기물 조건에 의하여 더 큰 영향을 받는 것으로 나타났다.

Keywords

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