Spatial analysis of air pollution in Bangkok metropolitan region

摘要

The objectives of this research are to propose a linear mixed model including spatial effects, to present the distribution of air pollutants including Sulphur dioxide (SO2), Nitrogen dioxide (NO2), Carbon monoxide (CO) and Ozone (O3) and Particulate matter (PM10) and to investigate the factors related to those air pollutants in Bangkok Metropolitan Region. The spatial effects were assumed to be a conditional autoregressive (CAR) model. The dependent variables were the levels of SO2, NO2, CO, O3 and PM10 in each area and the independents considered were industrial area, business area and suburban area. The results indicated that the factors influencing the levels of air pollution ranking from the highest to the lowest level were industrial area, suburban area and business area, respectively.