Journal
ENVIRONMENTAL POLLUTION
Volume 208, Issue -, Pages 96-101Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2015.08.039
Keywords
Urbanization; Developed country; Developing country; Urban air quality
Categories
Funding
- Natural Science Foundation of China [NSFC41301199]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
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We utilize the distribution of PM2.5 concentration and population in large cities at the global scale to illustrate the relationship between urbanization and urban air quality. We found: 1) The relationship varies greatly among continents and countries. Large cities in North America, Europe, and Latin America have better air quality than those in other continents, while those in China and India have the worst air quality. 2) The relationships between urban population size and PM2.5 concentration in large cities of different continents or countries were different. PM2.5 concentration in large cities in North America, Europe, and Latin America showed little fluctuation or a small increasing trend, but those in Africa and India represent a U type relationship and in China represent an inverse U type relationship. 3) The potential contribution of population to PM2.5 concentration was higher in the large cities in China and India, but lower in other large cities. (C) 2015 Elsevier Ltd. All rights reserved.
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