Causality of Forest Inventory and Roundwood Supply in Korea

摘要

This study confirmed econometrically the causality of forest inventory and roundwood supply using Korean data. In general, forest inventory is included as explanatory variable in roundwood supply function. We checked whether each series is stationaryor not before using it in the model, and determined whether the combination of the series is cointegrated. The relationship between forest inventory and roundwood supply was represented by bivariate vector autoregressive model. The causality of forest inventory and roundwood supply was measured by the causality test of Granger. There appeared to be no evidence of the causal relationship between change in forest inventory and change in roundwood supply in Korea. That is, change in forest inventory does not cause change in roundwood supply in Korea. It seems reasonable not to include forest inventory as explanatory variable in roundwood supply function in Korea.