In this paper, we calculate the self-sufficiency ratios in each industry and a food system, considering the composition of material costs by applying input-output analysis.
In calculation, we utilize 399 sector made a reclassification on the basis of 2000
iput
-otput tablebasic sector classification (noncompetitive-imports type). The major findings are as follows.
In the livestock industry and the food industry depending heavily on the import in terms of rawmaterials, there is big difference between the self-sufficiency ratios considering the composition ofmaterial costs or not.
The self-suffciency ratios in this paper are calculated more highly than food self-sufficiency ratioson a calorie supply basis. This is the reason that the value added arising accompanied with thecommodity production is domestic entirely.
In addition, self-suffciency ratios in this paper are higher than total food self-sufficiency ratios ona production value basis in the food balance sheet (71% in 2002). It is thought that this difference iscaused by the price evaluation of domestic and imported goods. This is a remaing issue.
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