Olayungbo David Oluseun
Obafemi Awolowo University, Department of Economics, Ile-Ife, Nigeria.
Institute of Business Research, University of Economics Ho Chi Minh City, Viet Nam.
Heliyon. 2021 Mar 9;7(3):e06357. doi: 10.1016/j.heliyon.2021.e06357. eCollection 2021 Mar.
In this study, we attempt to look into the cointegration and causal link of oil and food prices in the sample countries that are both food importing and oil exporting economies. Yearly data sets of 21 countries were used and the paper covers a time period of 2001-2015. The stationarity property of I(0) and I(I) of the variables informed the use of panel ARDL model. The short period analysis shows negative effects between food prices and oil price while positive effects exist in the long period. The causality result of the sample country shows that causality runs from food prices to oil price. The result implies that appropriate agricultural policies that promote favourable food prices and alternative energy options should be pursued in the countries to ensure sustained food and oil supply.
在本研究中,我们试图探究那些既是粮食进口国又是石油出口国的样本国家中,石油价格与食品价格之间的协整关系和因果联系。我们使用了21个国家的年度数据集,本文涵盖的时间段为2001年至2015年。变量的I(0)和I(1)平稳性特征为面板自回归分布滞后模型的使用提供了依据。短期分析表明食品价格和石油价格之间存在负面影响,而长期则存在正面影响。样本国家的因果关系结果表明因果关系是从食品价格到石油价格。该结果意味着这些国家应推行适当的农业政策以促进有利的食品价格,并采用替代能源选项,以确保食品和石油的持续供应。