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(51-05) Development of an Integrated System with Input-Output Tables and GIS for LCIA in Japan. Nansai, Keisuke*,1, Moriguchi, Yuichi1, Suzuki, Noriyuki1, Tohno, Susumu2, 1 National Institute for Environmental Studies, Tsukuba, Japan2 Kyoto University, Uji, Japan ABSTRACT- Input-output analysis can show direct and indirect environmental impact from production activities in each sector. Therefore, this method is often applied to life cycle inventory analysis (LCI). The results of LCI on energy consumption or CO2 emissions can be used in comparing a product's advantages and disadvantages. On the other hand, it is essential to use life cycle impact assessment (LCIA) to compare products whose pollutants impact the environment on a regional level. LCIA makes it possible to use an exposure dose of a pollutant as one of the environmental impact indices. Calculation of the exposure dose should take into account information specific to emissions and the exposure sites. For instance, population and meteorological conditions are necessary for this, although the Input-Output tables do not have this information. This study employed the Geographic Information System (GIS) to obtain information on regional pollution emissions. We developed an integrated system that provides geographical information to production sectors of the Input-Output tables. That is, the system can identify direct and indirect pollutant emissions from a production activity with GIS, e.g., indicating them on a map. We used GIS to calculate a pollutant's density from the emissions originating from the production facility in a 1 km square area, taking into consideration the meteorological conditions around the emission site. Then, the exposure dose was calculated from the pollutant's density and population distribution. In the case study we found the exposure dose of suspended particulate matters that end-user demand induced, for example, from public utilities. Key words: GIS, Input-Output tables, Exposure dose, Impact assessment |
