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KMID : 1024520120210050633
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Journal of the Environmental Sciences
2012 Volume.21 No. 5 p.633 ~ p.640
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Effect of LED Light Quality Treatment on the Functional Optimization of Foliage Plant
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Kim Myoung-Seon
Chae Soo-Cheon
Ann Seoung-Won
Choi Won-Chun
Lee Myung-Wo
Lee Kook-Han
Liu Xiao-Ming
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Abstract
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White light and compound light were found to be the ideal light sources for improving the functionality and ornamental
value of indoor plants and reducing the cost of maintenance, but because compound light hinders people from recognizing
the original color of plants and makes their eyes easily tired, white light was considered the optimal light satisfying all of the
ornamental value, economic efficiency and functionality resulting from plant growth. On the other hand, in the results of
examining physiological changes before and after treatment on fine dust PM10 and carbon dioxide removal capacity in a
closed chamber under an artificial light source, the patterns of carbon dioxide and fine dust removal were similar among the treatment groups according to light condition, but according to plant type, the removal rate per unit leaf area was highest in Spathiphyllum and lowest in Dieffenbachia. In the experiment on dust and carbon dioxide removal, the photosynthetic rate was over 2 times higher after the treatment, and the rate increased particularly markedly under compound light and white light, suggesting that the photosynthetic rate of plants increases differently according to light quality. These results show that light quality has a significant effect on the photosynthetic rate of plants, and suggests that plants with a high photosynthetic rate also have a high carbon dioxide and dust removal capacity. In conclusion, the photosynthetic rate of foliage plants increased under white and blue light that affect photosynthesis and the increased photosynthetic rate reduced carbon dioxide and fine dust, and therefore white and compound light were found to be the optimal light sources most functional and economically efficient in improving ornamental value and indoor air quality.
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KEYWORD
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Air circulation, Photosynthesis, Indoor garden, PM10, Carbon dioxide
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