Effects of Anthropogenic Emissions from Different Sectors on PM 2.5 Concentrations in Chinese Cities

Jie Yang, Pengfei Liu, Hongquan Song, Changhong Miao, Feng Wang, Yu Xing, Wenjie Wang, Xinyu Liu and Mengxin Zhao
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Jie Yang: Key Research Institute of Yellow River Civilization and Sustainable Development & Collaborative Innovation Center on Yellow River Civilization of Henan Province, Henan University, Kaifeng 475004, China
Pengfei Liu: Key Research Institute of Yellow River Civilization and Sustainable Development & Collaborative Innovation Center on Yellow River Civilization of Henan Province, Henan University, Kaifeng 475004, China
Hongquan Song: Institute of Urban Big Data, College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
Changhong Miao: Key Research Institute of Yellow River Civilization and Sustainable Development & Collaborative Innovation Center on Yellow River Civilization of Henan Province, Henan University, Kaifeng 475004, China
Feng Wang: Institute of Urban Big Data, College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
Yu Xing: Henan Ecological and Environmental Monitoring Center, Zhengzhou 450046, China
Wenjie Wang: Key Research Institute of Yellow River Civilization and Sustainable Development & Collaborative Innovation Center on Yellow River Civilization of Henan Province, Henan University, Kaifeng 475004, China
Xinyu Liu: Key Research Institute of Yellow River Civilization and Sustainable Development & Collaborative Innovation Center on Yellow River Civilization of Henan Province, Henan University, Kaifeng 475004, China
Mengxin Zhao: Institute of Technology, Technology & Media University of Henan Kaifeng, Kaifeng 475004, China

IJERPH, 2021, vol. 18, issue 20, 1-13

Abstract: PM 2.5 pollution has gradually attracted people’s attention due to its important negative impact on public health in recent years. The influence of anthropogenic emission factors on PM 2.5 concentrations is more complicated, but their relative individual impact on different emission sectors remains unclear. With the aid of the geographic detector model (GeoDetector), this study evaluated the impacts of anthropogenic emissions from different sectors on the PM 2.5 concentrations of major cities in China. The results indicated that the influence of anthropogenic emissions factors with different emission sectors on PM 2.5 concentrations exhibited significant changes at different spatial and temporal scales. Residential emissions were the dominant driver at the national annual scale, and the NO X of residential emissions explained 20% ( q = 0.2) of the PM 2.5 concentrations. In addition, residential emissions played the leading role at the regional annual scale and during most of the seasons in northern China, and ammonia emissions from residents were the dominant factor. Traffic emissions play a leading role in the four seasons for MUYR and EC in southern China, MYR and NC in northern China, and on a national scale. Compared with primary particulate matter, secondary anthropogenic precursors have a more important effect on PM 2.5 concentrations at the national or regional annual scale. The results can help to strengthen our understanding of PM 2.5 pollution, improve PM 2.5 forecasting models, and formulate more precise government control policy.

Keywords: PM 2.5 concentrations; anthropogenic emissions; emission sectors; GeoDetector model; China (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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