Next Article in Journal
Social Network Analysis of Factors Influencing Green Building Development in China
Previous Article in Journal
One-Year Follow-Up Examination of the Impact of the North Carolina Healthy Food Small Retailer Program on Healthy Food Availability, Purchases, and Consumption
Open AccessArticle

Population Exposure to Ambient PM2.5 at the Subdistrict Level in China

by Ying Long 1,*, Jianghao Wang 2,†, Kang Wu 3,* and Junjie Zhang 4
School of Architecture and Hang Lung Center for Real Estate, Tsinghua University, Beijing 100084, China
State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Beijing Key Laboratory of Megaregions Sustainable Development Modelling and School of Urban Economics and Public Administration, Capital University of Economics and Business, Beijing 100070, China
Environmental Research Center, Duke Kunshan University, Kunshan 215316, China
Authors to whom correspondence should be addressed.
The first two authors contribute equally to the paper.
Int. J. Environ. Res. Public Health 2018, 15(12), 2683;
Received: 30 September 2018 / Revised: 20 November 2018 / Accepted: 24 November 2018 / Published: 28 November 2018
Fine-particulate pollution is a major public health concern in China. Accurate assessment of the population exposed to PM2.5 requires high-resolution pollution and population information. This paper assesses China’s potential population exposure to PM2.5, maps its spatiotemporal variability, and simulates the effects of the recent air pollution control policy. We relate satellite-based Aerosol Optical Depth (AOD) retrievals to ground-based PM2.5 observations. We employ block cokriging (BCK) to improve the spatial interpolation of PM2.5 distribution. We use the subdistrict level population data to estimate and map the potential population exposure to PM2.5 pollution in China at the subdistrict level, the smallest administrative unit with public demographic information. During 8 April 2013 and 7 April 2014, China’s population-weighted annual average PM2.5 concentration was nearly 7 times the annual average level suggested by the World Health Organization (WHO). About 1322 million people, or 98.6% of the total population, were exposed to PM2.5 at levels above WHO’s daily guideline for longer than half a year. If China can achieve its Action Plan on Prevention and Control of Air Pollution targets by 2017, the population exposed to PM2.5 above China’s daily standard for longer than half a year will be reduced by 85%. View Full-Text
Keywords: PM2.5; population exposure; MODIS (Moderate Resolution Imaging Spectroradiometer) AOD; China PM2.5; population exposure; MODIS (Moderate Resolution Imaging Spectroradiometer) AOD; China
Show Figures

Graphical abstract

MDPI and ACS Style

Long, Y.; Wang, J.; Wu, K.; Zhang, J. Population Exposure to Ambient PM2.5 at the Subdistrict Level in China. Int. J. Environ. Res. Public Health 2018, 15, 2683.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Search more from Scilit
Back to TopTop