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Agricultural Fires and Their Potential Impacts on Regional Air Quality over China

Shuping Zha,Shuanqin Zhang,T. Cheng,Jianmin Chen,Guanghan Huang,Xiang Li,Quanfang Wang

Published 2013 in Aerosol and Air Quality Research

ABSTRACT

The potential impacts of agricultural fires (agri-fires) on regional air quality over China were examined using active fire products derived from satellite remote sensing and air mass trajectory modeling from 2009 to 2010. Agri-fires were found in most administrative areas. More than 80% of the agri-fires were in the heartlands of agricultural regions such as Anhui, Jiangsu, Shandong and Henan Provinces. Agri-fires had a seasonal pattern, with two distinct peaks in summer and autumn harvest periods, especially in June (61–86%) and October (5–14%). Agri-fire smoke was transported in the atmosphere on a continental scale in three directions, moving northeasterly, northwesterly and southwesterly away from source areas. Particles from agri-fire smoke contributed more than 35% of aerosol optical depth (AOD) over regions of the Jiaodong Peninsular, the North Plain, East China and other areas, and exceeded 60% in some areas of Shandong, Henan and Jiangsu Provinces. In the boundary layer atmosphere, particles from agri-fire smoke contributed more than 29% of PM10 in parts of Anhui, Jiangsu and Shandong Provinces. Due to agri-fires the amount of PM10 was highly correlated (R2 = 0.6) with the smoke air masses in the main potential sink regions, and the mean PM10 during the summer harvest of 2010 reached 0.24 mg/m3 far higher than the adjacent periods without smoke.

PUBLICATION RECORD

  • Publication year

    2013

  • Venue

    Aerosol and Air Quality Research

  • Publication date

    2013-03-01

  • Fields of study

    Agricultural and Food Sciences, Environmental Science

  • Identifiers
    DOI 10.4209/aaqr.2012.10.0277
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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