Development of LCA Database Based on an Economic Input-Output Table

We have developed an LCA database based on the latest Input-Output table (IOT) for Japan, which was released in 2004, with three types of modification. First, hybrid analysis was applied to estimate the total environmental loads. The ten main import goods have been evaluated by the process analysis method and added to environmental loads inside Japan calculated based on the Japanese IOT. Second, thirty types of inventory have been estimated. Consideration of various environmental loads makes it possible to evaluate the total environmental impacts comprehensively. Third, several categories in the IOT have been divided so as to estimate emissions intensities of embodied greenhouse gases accurately.