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论文类型：期刊论文

发表时间：2018-01-01

发表刊物：JOURNAL OF CLEANER PRODUCTION

收录刊物：SCIE、EI

卷号：170

页面范围：388-398

ISSN号：0959-6526

关键字：Air pollution; Particulate matter; Sequential pattern; PM2.5

摘要：China has been suffering from severe PM2.5 pollution in recent years. Significant effort has been devoted to analyzing the chemical characteristics and emission sources of PM2.5 pollution. However, because air pollution is a complex problem with a broad scope, macro-level analysis is also required to systematically address this issue. In this paper, we analyze the spatial-temporal features of PM2.5 pollution and discover sequential patterns in cities located in three important zones in China, namely, the Bohai Sea, Yangtze River Delta, and Pearl River Delta regions. The sequential patterns reveal hidden associative relationships that could provide evidence to support united policy-making in different areas. Our results also reveal significant heterogeneities among the underlying relationships, while certain homogeneities do exist in some seasons in the three regions. Moreover, the relations to the monsoon systems and Huai River policy are further discussed to draw policy implications. (C) 2017 Elsevier Ltd. All rights reserved.