The Spatial-Temporal Characteristics of Air Pollution in China from 2001–2014

International Journal of Environmental Research and Public Health

Junzhe Bao¹  Xiping Yang³  Zhiyuan Zhao³  Zhenkun Wang¹  Chuanhua Yu¹  Xudong Li² 

[1] Department of Epidemiology and Biostatistics, School of Public Health, Wuhan University, # 185 Donghu Road, Wuhan 430071, China;;Office of Epidemiology, Chinese Center for Disease Control and Prevention, 155 Changbai Road, Changping District, Beijing 102206, ChinaState Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, 129 Luoyu Road, Wuhan 430079, China;

关键词: Air Pollution Index;    Air Quality Index;    spatial-temporal characteristics;    shift of gravity center;   

DOI  :  10.3390/ijerph121215029

来源: mdpi

【 摘 要 】

To provide some useful information about the control of air pollution in China, we studied the spatial-temporal characteristics of air pollution in China from 2001–2014. First, we drew several line charts and histograms of the Air Pollution Index (API) and Air Quality Index (AQI) of 31 capital cities and municipalities to research the distribution across different times and cities; then, we researched the spatial clustering of API and AQI; finally, we examined the shift of the gravity center of API and AQI in different years and months. The API values had a decreasing trend: the high values had a clustering trend in some northern cities, and the low values had a clustering trend in some southern cities. The AQI values were relatively low, from 15:00–17:00 during the day. The gravity center of API had a trend of moving south from 2001–2003, then fluctuated in an unordered pattern and moved north in the winter. The AQI gravity center did not have a regular shift during different months. In conclusion, the government should take action to mitigate air pollution in some typical cities, as well as air pollution during the winter.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.