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Air Quality, Atmosphere & Health

, Volume 12, Issue 4, pp 425–434 | Cite as

A national analysis of the geographic aspects and ecological correlates of PM2.5 in China based on ground observational data

  • Zhiqiang Hu
  • Charlie H. ZhangEmail author
  • Changhong MiaoEmail author
Article

Abstract

Increasing studies have investigated the characteristics of fine particulate matter of less than 2.5 μm (PM2.5) using ground-level observations among Chinese cities in recent years. This article analyzed the geographic aspects and ecological correlates of PM2.5 based on in situ ambient air quality observations for 367 cities and prefectures across China. Results of global and local Moran’s I analyses suggested a significant clustered pattern of PM2.5 across the country with hot spots mainly concentrated in cities located in the North China Plain. Spatially interpolated PM2.5 estimates showed that most of China’s territories experienced unhealthy concentrations of PM2.5 except during summer, while much larger proportions of China’s population was exposed to unhealthy PM2.5 all year round. Results from regression analyses suggested that the spatial variations of PM2.5 were positively associated with air pollution but inversely related to meteorological factors. Findings from this research can provide new insights into air pollution mitigation policies and public health efforts in China and beyond.

Keywords

Spatial analysis Smog PM2.5 Spillover effect China 

Notes

Funding information

This article was supported by a research grant from the National Natural Science Foundation of China (NSFC no. 41430637).

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Copyright information

© Springer Media B.V., onderdeel van Springer Nature 2019

Authors and Affiliations

  1. 1.Key Research Institute of Yellow River Civilization and Sustainable Development & Collaborative Innovation Center on Yellow River Civilization of Henan ProvinceHenan UniversityKaifengChina
  2. 2.College of Environment and PlanningHenan UniversityKaifengChina
  3. 3.Department of Geography & GeosciencesUniversity of LouisvilleLouisvilleUSA

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