干旱区研究

Arid Zone Research ›› 2018, Vol. 35 ›› Issue (3): 562-567.doi: 10.13866/j.azr.2018.03.08

• Climatic Environment • Previous Articles     Next Articles

PM2.5 Concentration over Typical Urban Green Spaces in Baotou City and Its Peripheral Regions

Tongliga1,2, LI Xue-ming1,3, ZHANG Jing1,4, TIAN Shen-zhen1, CONG Xue-ping1   

  1. 1. College of Urban and Environmental Sciences,Liaoning Normal University,Dalian 116029,Liaoning,China;
    2. School of Resources and Environmental Sciences,Baotou Teachers’ College,Baotou 014030,Inner Mongolia,China;
    3. Research Center of Human Settlement,Liaoning Normal University,Dalian 116029,Liaoning,China;
    4. College of Environmental and Resources Sciences,Dalian Minzu University,Dalian 116029,Liaoning,China
  • Received:2017-09-26 Revised:2017-12-29 Online:2018-05-15 Published:2025-11-17

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Abstract: PM2.5 pollution has gradually become as the primary air pollutants over urban and regional areas in China.Baotou City is an important industrial base in China,and its PM2.5 pollution is serious.Based on the combination of field measurement and remote sensing means,the values of PM2.5 concentration over the typical urban green spaces in Baotou City and the surrounding roads and districts were compared and analyzed using the measured PM2.5 concentration data and Landsat 8 OLI image data,and the correlation analysis between NDVI and PM2.5 concentration was carried out.The results showed that the values of PM2.5 concentration over the Labor Park,Sai han Tara Ecological Park and Teachers’ College Grove were higher than that over the surrounding roads and the districts,those over the Children’s Park,Qingshan Park and Bayi Park were slightly lower or similar to those over the peripheral regions,and there was a weak negative correlation between NDVI and PM2.5 concentration.On the whole,the urban green spaces play a certain role in reducing the PM2.5 concentration.The high values of PM2.5 concentration over the urban green spaces was mainly caused by the high humidity,high canopy closure,low wind speed and dust emission.

Key words: urban green space, peripheral region, PM2.5, NDVI, comparative analysis, Baotou City