Assessment of PM2.5 concentrations and exposure throughout China using ground observations
Assessment of PM2.5 concentrations and exposure throughout China using ground observations
复制标题
利用地面观测评估中国各地的 PM2.5 浓度和暴露量
DOI：
10.1016/j.scitotenv.2017.05.263
复制
发表时间：
2017-12-01
影响因子：
9.8
通讯作者：
Meng, Can
中科院分区：
文献类型：
--
作者：
Guo, Hong;Cheng, Tianhai;Meng, Can
暴露于PM2.5会对人类健康产生负面影响。然而，由于空间和时间2.5浓度数据有限，PM2.5国家规模的暴露因中国而闻名。在这项研究中，我们使用高分辨率的时间和空间地面PM2.5数据对PM2.5暴露于2015年的PM2.5暴露。我们的结果表明，年平均PM2.5浓度为52.81 mu g/m（3），最高的年平均PM2.5浓度主要出现在北中国平原。我们还发现，分别在8月和1月出现了最低和最高的每月平均PM2.5浓度，而最低和最高的昼夜平均PM2.5浓度分别发生在16:00和10:00。此外，与2013年的数据的比较表明，从2013年到2015年，年度平均PM2.5浓度降低了12.31％，这可能是由于2015年初实施了环境保护法。我们的发现提供了新的见解，不仅为PM2.5暴露和人类健康的研究提供了新的见解，还可以告知国家和地区空气污染的实施。 （c）2017 Elsevier B.V.保留所有权利。
Exposure to PM2.5 results in negative effects on human health. However, PM2.5 exposure at the national scale is poorly known for China owing to limited spatial and temporal PM2.5 concentration data. In this study, we present analyses of PM2.5 exposure throughout China using high-resolution temporal and spatial ground-level PM2.5 data from 2015. Our results indicated that the annual mean PM2.5 concentration was 52.81 mu g/m(3), and that the highest annual mean PM2.5 concentrations primarily appeared in the North China Plain. We also found the lowest and highest monthly mean PM2.5 concentrations appeared in August and January, respectively, while the lowest and highest diurnal mean PM2.5 concentrations occurred at 16:00 and 10:00, respectively. Moreover, comparisons to data from 2013 indicated that the annual mean PM2.5 concentrations decreased by 12.31% from 2013 to 2015, which was likely due to the implementation of environmental protection laws in early 2015. Our findings provide new insights, for not only studies of PM2.5 exposure and human health, but also to inform the implementation of national and regional air pollution reduction policies. (C) 2017 Elsevier B.V. All rights reserved.