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http://dx.doi.org/10.5467/JKESS.2019.40.6.606

A Study on Frost Occurrence Estimation Model in Main Production Areas of Vegetables  

Kim, Yongseok (Climate Change & Agroecology Division, Department of Agricultural Environment, National Institute of Agricultural Science)
Hur, Jina (Climate Change & Agroecology Division, Department of Agricultural Environment, National Institute of Agricultural Science)
Shim, Kyo-Moon (Climate Change & Agroecology Division, Department of Agricultural Environment, National Institute of Agricultural Science)
Kang, Kee-Kyung (Climate Change & Agroecology Division, Department of Agricultural Environment, National Institute of Agricultural Science)
Publication Information
Journal of the Korean earth science society / v.40, no.6, 2019 , pp. 606-612 More about this Journal
Abstract
In this study, to estimate the occurrence of frost that has a negative effect on th growth of crops, we constructed to the statistical model. We factored such various meteorological elements as the minimum temperature, temperature at 18:00, temperature at 21:00, temperature at 24:00, average wind speed, wind speed at 18:00, wind speed at 21:00, amount of cloud, amount of precipitation within 5 days, amount of precipitation within 3 days, relative humidity, dew point temperature, minimum grass temperature and ground temperature. Among the diverse variables, the several weather factors were selected for frost occurrence estimation model using statistical methods: T-test, Variable importance plot of Random Forest, Multicollinearity test, Akaike Informaiton Criteria, and Wilk's Lambda values. As a result, the selected meteorological factors were the amount of cloud, temperature at 24:00, dew point temperature, wind speed at 21:00. The accuracy of the frost occurrence estimation model using Random Forest was 70.6%. When it applied to the main production areas of vegetables, a estimation accuracy of the model was 65.2 and 78.6%.
Keywords
frost; random forest; meteorological factors; vegetables; main production areas;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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