The impact of macroeconomics variables on imports of particleboard and MDF in Iran

In this study, the impact of the selected macroeconomic variables on demand for imports of particleboard and MDF and the existence of long-run and short-run relationships between the variables of import functions for these products investigated applying Johansson – Juselius and Granger causality tests respectively. After making stationary all of the variable and ensure the lack of serial autocorrelation in error terms, the linear functions of import demand in the period of 1986 to 2011 are empirically estimated using an ordinary least squares model. The results indicated that demand for imports of particleboard and MDF have positive relation with national income per capita, the relative price Index and population of the country. Also, the results of Johansen-Juselius test showed that there was one cointegration vector between the related variables for particleboard and MDF. In the imports demand function of particleboard found that there was one-side causal relation from the price per barrel of oil, the relative price Index and population quantity variables to the dependent variable and for MDF are confirmed the one-side causal relation from the relative price index, national income per capita and population quantity at the 95% level and for price per barrel of oil at the 90%level.