预期寿命
空气污染
空气质量指数
环境卫生
不平等
公共卫生
中国
人口
CMAQ
污染物
环境科学
臭氧
健康效应
人口学
地理
医学
气象学
数学
化学
护理部
考古
有机化学
社会学
数学分析
作者
Tao Xue,Ruohan Wang,Meng Wang,Yanying Wang,Dan Tong,Xia Meng,Conghong Huang,Siqi Ai,Fangzhou Li,Jun Cao,Mingkun Tong,Xueqiu Ni,Hengyi Liu,Jianyu Deng,H. Lü,Wei Wan,Jicheng Gong,Shiqiu Zhang,Tong Zhu
摘要
ABSTRACT Clean air actions (CAAs) in China have been linked to considerable benefits in public health. However, whether the beneficial effects of CAAs are equally distributed geographically is unknown. Using high-resolution maps of the distributions of major air pollutants (fine particulate matter [PM2.5] and ozone [O3]) and population, we aimed to track spatiotemporal changes in health impacts from, and geographic inequality embedded in, the reduced exposures to PM2.5 and O3 from 2013 to 2020. We used a method established by the Global Burden of Diseases Study. By analyzing the changes in loss of life expectancy (LLE) attributable to PM2.5 and O3, we calculated the gain of life expectancy (GLE) to quantify the health benefits of the air-quality improvement. Finally, we assessed the geographic inequality embedded in the GLE using the Gini index (GI). Based on risk assessments of PM2.5 and O3, during the first stage of CAAs (2013 to 2017), the mean GLE was 1.87 months. Half of the sum of the GLE was disproportionally distributed in about one quarter of the population exposed (GI 0.44). During the second stage of CAAs (2017 to 2020), the mean GLE increased to 3.94 months and geographic inequality decreased (GI 0.18). According to our assessments, CAAs were enhanced, from the first to second stages, in terms of not only preventing premature mortality but also ameliorating health inequalities. The enhancements were related to increased sensitivity to the health effects of air pollution and synergic control of PM2.5 and O3 levels. Our findings will contribute to optimizing future CAAs.
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