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KMID : 0613820100200040597
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Journal of Life Science
2010 Volume.20 No. 4 p.597 ~ p.601
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The Growth Response of Quercus dentata Sapling to the Environmental Gradients Treatment
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Lee Sang-Kyoung
You Young-Han
Lee Hoon-Bok
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Abstract
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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, below ground 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.
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KEYWORD
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Quercus, ecological trait, environmental treatment
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