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http://dx.doi.org/10.5668/JEHS.2020.46.6.636

Survey of Emission Characteristics and Weather Factors for Application in Prediction Modeling for Phytoncide Weather Services  

Kim, Byoung-Ug (Gangwon Institute of Health and Environment)
Hyun, Geun-Woo (Gangwon Institute of Health and Environment)
Choi, Jong-Han (Gangwon Institute of Health and Environment)
Hong, Young-Kyun (Gangwon Institute of Health and Environment)
Yi, Geon-Ho (Gangwon Institute of Health and Environment)
Huh, In-Ryang (Gangwon Institute of Health and Environment)
Choi, Seung-Bong (Gangwon Institute of Health and Environment)
Publication Information
Journal of Environmental Health Sciences / v.46, no.6, 2020 , pp. 636-645 More about this Journal
Abstract
Objectives: This study was performed to find phytoncide (monoterpene) emission characteristics and weather factors for application in prediction modeling for phytoncide weather services. Methods: From 2017 to 2019, one coniferous forest and one deciduous forest were selected to investigate the monthly emission characteristics and identify the correlation with weather factors. Research items were analyzed for 11 species known to be emitting the most monoterpenes. Results: Phytoncide (monoterpene) began to increase in April when trees were activated and continued to be released until November. The concentration range of monoterpene in deciduous forests was 0.0 to 427.4 ng/S㎥ and coniferous forests was 0.0 to 1,776.8 ng/S㎥. Phytoncide emission concentrations in deciduous forests were 20 to 90 percent of those in coniferous forests, and averaged 39 percent overall. The correlation between monoterpene and temperature was very close, with 0.835 for the broadleaf forest and 0.875 for the coniferous forest. Monoterpene and humidity were found to be 0.731 for the broadleaf forest and 0.681 for the coniferous forest, while wind speed showed a negative correlation of -0.482 and -0.424, respectively. Regression of temperature with phytoncide showed that the coefficient of determination (r2) was highly correlated with 0.75 for the broadleaf forest and 0.80 for the coniferous forest. Not only is phytoncide concentration affected by temperature, humidity, and wind speed, but also rainfall over the preceeding one to three days. Nearby rainfall on the day of sampling was found to have a direct effect on the physiological activities of the trees. Conclusions: Overall, if the values of monoterpene and temperature, humidity, and wind speed are used as basic factors, and rainfall from one to three days previous is replaced with complementary values, it is believed that the numerical analysis and modeling of daily and monthly phytoncide will be possible.
Keywords
Phytoncide; monoterpene; coniferous forests; deciduous forests;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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