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KMID : 1024520130220091171
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Journal of the Environmental Sciences
2013 Volume.22 No. 9 p.1171 ~ p.1180
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Effects of Meteorological Elements in the Production of Food Crops: Focused on Regression Analysis using Panel Data
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Lee Joong-Woo
Jang Young-Jae
Ko Kwang-Kun
Park Jong-Kil
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Abstract
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Recent climate change has led to fluctuations in agricultural production, and as a result national food supply has become an important strategic factor in economic policy. As such, in this study, panel data was collected to analyze the effects of seven meteorological elements and using the Lagrange multipliers method, the fixed-effects model for the production of five types of food crop and the seven meteorological elements were analyzed. Results showed that the key factors effecting increases in production of rice grains were average temperature, average relative humidity and average ground surface temperature, while wheat and barley were found to have positive correlations with average temperature and average humidity. The implications of this study are as follow. First, it was confirmed that the meteorological elements have profound effects on the production of food crops. Second, when compared to existing studies, the study was not limited to one food crop but encompassed all five types, and went beyond other studies that were limited to temperature and rainfall to include various meterological elements.
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KEYWORD
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Food crop, Panel data, Lagrange multiplier, One-way error component regression model
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