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http://dx.doi.org/10.14578/jkfs.2011.100.4.25

Effect of Artificial Warming on Chlorophyll Contents and Net Photosynthetic Rate of Quercus variabilis Seedlings in an Open-field Experiment  

Jo, Wooyong (Division of Environmental Science and Ecological Engineering, Korea University)
Son, Yowhan (Division of Environmental Science and Ecological Engineering, Korea University)
Chung, Haegeun (Department of Environmental Engineering, Konkuk University)
Noh, Nam Jin (Division of Environmental Science and Ecological Engineering, Korea University)
Yoon, Tae Kyung (Division of Environmental Science and Ecological Engineering, Korea University)
Han, Saerom (Division of Environmental Science and Ecological Engineering, Korea University)
Lee, Sun Jeoung (Division of Environmental Science and Ecological Engineering, Korea University)
Lee, Sue Kyoung (Forest Policy Division, Korea Forest Service)
Yi, Koong (Division of Environmental Science and Ecological Engineering, Korea University)
Jin, Lixia (Division of Environmental Science and Ecological Engineering, Korea University)
Publication Information
Journal of Korean Society of Forest Science / v.100, no.4, 2011 , pp. 733-737 More about this Journal
Abstract
We investigated the effect of artificial warming on chlorophyll contents and net photosynthetic rates of 2-year-old Quercus variabilis seedlings in a nursery open-field experiment site. 64 seedlings were each planted in $1m{\times}1m$ plots (n = 4) and warmed with infrared lamps. The air temperature in warmed plots was $3^{\circ}C$ higher than that of control plots. Chlorophyll contents and net photosynthetic rates were measured in May, July, August, September and October, 2011. In May, September and October chlorophyll contents and net photosynthetic rates were significantly higher in warmed plots than in control plots. However, there were no significant differences in chlorophyll contents and net photosynthetic rates between warmed plots and control plots in July and August. It seemed that early developed leaves of warmed plots in May with higher chlorophyll contents could lead to higher net photosynthetic rates whereas there was no difference in net photosynthetic rates due to saturation of chlorophyll contents in July and August. Increased biosynthesis of chlorophyll due to warming might increase net photosynthetic rates in September and October.
Keywords
chlorophyll contents; climate change; net photosynthetic rates; Quercus variabilis; warming experiment;
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Times Cited By KSCI : 1  (Citation Analysis)
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