14:15 〜 14:30
[014] Examining the impacts of urban form characteristics on particulate matter concentration in Korea
キーワード：Particulate matter, Urban From, Spatial regression model
Environmental changes caused by industrialization are threatening our lives in many ways. Long-term exposure to particulate matter can increase the probability of various health problems such as respiratory diseases and cardiovascular diseases. The government’s response to the threat of particulate matter is mainly focusing on reducing the key sources of emissions (powerplants, large industries, incineration facilities, automobiles, etc.). However, it is necessary to implement comprehensive measures to reduce air pollution by linking urban and environmental planning. Particulate matter can be affected not only by polluter factors but also by various factors in the region such as land use, transportation, climate, and socioeconomic. Recent studies have revealed how urban planning and air quality were interlinked, uncovering the urban topology, and understanding its influence on air pollution to interpret the distribution of air pollutants. This study explores the relationship between urban form characteristics on different urban population sizes and particulate matter concentrations by establishing a spatial regression model. The urban form characteristics include impervious area, fragmentation, compactness, and population density. In this study, those characteristics were calculated from the Korean impervious surface data and population data using Fragstats and GIS (Geographic Information System). The results show that not only climate factors and emission sources have a significant impact on particulate matter concentration, but also urban form characteristics play an important role as well as other factors. Also, this study found that population density had a robust moderating effect. That is, all else being equal, particulate matter concentrations are lower when fragmented urban areas have a higher population density and higher when compacted rural areas have a higher population density. This research may provide a better understanding of the relationship between urban form and air quality in different city sizes. Moreover, we suggest that decision-makers and urban planners should take urban form characteristics into account when they are planning smart cities and mitigating urban air pollution problems.