SCIENTIA GEOGRAPHICA SINICA ›› 2020, Vol. 40 ›› Issue (2): 190-199.doi: 10.13249/j.cnki.sgs.2020.02.004

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Spatio-temporal Variation Features of Air Quality in China

Zhang Xiangmin1,2, Luo Shen1, Li Xingming1(), Li Zhuofan1, Fan Yong2,3, Sun Jianwu2   

  1. 1. Key Laboratory for Geographical Process Analysis & Simulation of Hubei Province, Central China Normal University, Wuhan 430079, Hubei, China;
    2. School of Geographic Science, Xinyang Normal University, Xinyang 464000, Henan, China
    3. Research Institute for Smart Cities & Shenzhen Key Laboratory of Spatial Information Smart Sensing and Services, School of Architecture and Urban Planning, Shenzhen University, Shenzhen 518000, Guangdong, China;
  • Received:2019-02-15 Revised:2019-05-23 Online:2020-02-10 Published:2020-04-09
  • Contact: Li Xingming
  • Supported by:
    National Natural Science Foundation of China(41671179);National Natural Science Foundation of China(41701187);Philosophy and Social Science Planning Project of Henan Province(2016BJJ046);Philosophy and Social Science Planning Project of Henan Province(2017CJJ093);Humanities and Social Science Research Project of Henan Provincial Department of Education(2019-ZZJH-178);Funding Project for Young Key Teachers of Xinyang Normal University(2016GGJS-02);Youth Research Fund Project of Xinyang Normal University(2018-QN-039)


Cross-regional air pollution control is an urgent problem in ecological civilization construction. Based on the daily air quality index (AQI) data of 343 districts in China in 2015, used the statistical analysis and spatial autocorrelation analysis method, the temporal and spatial distribution features of air quality in China and nine regions of the terrestrial surface system was analyzed. The results show that: 1) The seasonal mean values of AQI in the whole country and nine major regions show the air quality is worse in spring, is excellent in summer and autumn, and falls to its worst in winter. Meanwhile, the seasonal mean values of AQI show a “U” shape. 2) The monthly mean values of AQI in the whole country and nine major regions show a “L” shape. 3) The daily mean values of AQI in the whole country and nine major regions show a periodic W-pulse fluctuation pattern. 4) The “hot spot” and “cold spot” regions demonstrate the differential pattern of being high and hot in the North and being low and cold in the South. 5) The frequency structure of the primary pollutant in the nine regions is significantly diversified, and the highest frequency of the primary pollutant PM2.5 or PM10 has a clear differential pattern between the East and the West.

Key words: air quality, spatial autocorrelation, nine regions, China

CLC Number: 

  • X144