Journal
RESOURCES CONSERVATION AND RECYCLING
Volume 176, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.resconrec.2021.105918
Keywords
Air pollution; PM2.5; Ozone (O-3); Disability-adjusted life-years (DALYs); Spatiotemporal trends
Categories
Funding
- National Key Research and Development Program of China [2017YFC0211706]
- National Natural Science Foundation of China [41701234, 42071433]
- National High-level Talents Special Support Plan of China for Young Talents
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Significant progress has been made in reducing air pollution in China, leading to improvements in health. The study shows a decline in DALYs related to PM2.5, while DALYs related to O-3 are on the rise. Different pollutants and outcomes exhibit distinct spatial patterns and trends, emphasizing the need for stringent regulatory policies and targeted measures to continue reducing air pollution and mitigating its health burden in China.
Significant progress has been made in reducing air pollution across China after years of efforts. However, it remains uncertain as to how these changes in pollution have influenced disease burden. Furthermore, only limited data are available with regard to the spatiotemporal patterns of air pollution related disability-adjusted life-years (DALYs) across China. Using multi-parameter and random-forest derived PM2.5 and O-3 concentrations from 2005 to 2017 and based on the updated non-linear integrated exposure-response functions (IERs), we estimated the county-level PM2.5- and O-3-related DALYs across China and explored the spatiotemporal trends. In 2017, the ambient PM2.5 and O-3 were estimated to cause 0.894 million premature deaths and 22.77 million DALYs in China. From 2005 to 2017, the DALYs related to PM2.5 declined across China, especially after 2013, although levels remained high. The DALYs related to O-3 are generally increasing, although at a lower rate when compared with PM2.5. Approximately 96.7% of the PM2.5-related DALYs, and 94.8% of the O-3-related DALYs, are from the southeast side of the Huhuanyong Line, of the country. The reduction of air pollution in China has led to a significant improvement in health. Higher related DALYs were observed in regions with dense populations and higher concentrations of PM2.5 and O-3. Different pollutants and related outcomes are associated with different spatial patterns and change trends. Strict regulatory policies, and coordinated and regional-specific measurements are needed to continually reduce air pollution and mitigate the health burden caused by air pollution in China.
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