PROGRESS IN GEOGRAPHY ›› 2007, Vol. 26 ›› Issue (4): 44-50.doi: 10.11820/dlkxjz.2007.04.007

• Original Articles • Previous Articles     Next Articles

GIS- based Study on Urban NOx Induced Health Risk Assessment

LIAO Yongfeng1,2, WANG Wuyi1, ZHANG Li1   

  1. 1. Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing100101|
    2. National Disaster Reduction Center of China, Beijing 100053
  • Received:2007-05-01 Revised:2007-05-01 Online:2007-07-25 Published:2007-07-25

Abstract:

Abstract: Urban air pollution has become a major threat to human health now, and it seems that this situation will be worsening in the future. In particular, NOx pollution, which often causes many severe diseases, by urban transportation has been becoming a worse environment problem with the urbanization and has come to focus in both developing countries and developed ones. GIS- based study on urban air quality simulation and heath risk assessment come to a case in point in the world. This paper adopts GIS raster and surface analysis tools to build a spatial health risk assessment model on the basis of the present popular health- risk- assessment basic framework, which includes concentration, exposure, dose and effect. The model have made great advance in two ways of quantitatively assessing health effect and assessing air quality on urban local scale. The dose- effect function of pollutant toxicology is applied to quantitatively analyze the health effect, which succeeds in solving uncertainty problem confronting health effect assessment. In order to simulating pollutant exposure on the local urban scales, micro- environment study method is adopted to build exposure model including urban population distribution simulation and population time- activity pattern analysis. The study brings an effectively approach to assessing urban air quality. Finally, this paper simulates the NOx exposure distribution, classifies health risk and calculates risk population in a south- eastern coastal city of Fuzhou, China. The result shows that the study has practicability in assessing urban health risk of urban air quality.

Key words: Air pollution, GIS, Health- risk assessment from Nox, Urban