抄録
Emissions inventories of suspended particulate matter (SPM) from anthropogenic sources in Japan were created based on the input-output tables covering about 400 sectors in 1990 and 1995. The SPM emissions from each sector were estimated as products of energy consumption by fuel type and SPM emission factors specific for fuel and industry. Total national emission was 34.0 × 104 t/y in 1995 and the contribution of stationary sources was 46 %. Emission from electricity and gas supply sector was the largest and occupied 14 % of the stationary sources. The emission from mobile sources including tire wear of cars was estimated to be 18.4 × 104 t/y. The tire wear greatly contributed to the national total emissions and was 9 % in total. We also made an analysis on a relationship between SPM emissions and the domestic final demand by the input-output approach. Direct emissions and the embodied emissions were calculated by sector and it was found that the indirect emissions were not negligible for service industries.
