DEVELOPMENT OF DATABASE ON JAPANESE SECTORAL ENERGY CONSUMPTION, CO_2 AND AIR POLLUTANT EMISSIONS INTENSITIES BASED ON THE INPUT-OUTPUT TABLES

摘要

This study produced a database on Japanese embodied emission intensities of NO_x, SO_x and suspended particulate matter (SPM) responsible for regional environmental issues outside of energy consumption and CO_2 emissions using the Input-Output tables in 1990 and 1995. Consumptions of about 20 fossil fuels and 5 other fuels were estimated according to approximately 400 sectors. Air pollutant emission factors for stationary sources were calculated from the results of a survey on air pollution prevention in Japan. Pollutant emissions from mobile sources were estimated taking into consideration vehicle types, traveling speed and distance. As a result, the total energy consumptions in 1990 and 1995 were estimated to be 16.6 GJ and 18.3 GJ, respectively, and calculation of CO_2 emission resulted in 1.15 Gt-CO_2 in 1990 and 1.26 Gt-CO_2 in 1995. Similarly, increment of air pollutant emissions from 1990 to 1995 was demonstrated quantitatively. NO_x emission increased from 3.37 Mt to 3.51 Mt, SO_x emissions in 1990 and 1995 showed almost same values of 1.87 Mt. As for SPM emission, its amount changed from 0.30 Mt to 0.32 Mt. All data on embodied intensities calculated by application of input-output analysis was compiled into the data book.