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| Research Progress in Atmospheric Particulate Matter Emissions from Agricultulral Tillage |
| Received:February 11, 2015 |
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| KeyWord:aerosol;PM2.5;PM10;air quality;land preparation;harvest |
| Author Name | Affiliation | | CHEN Wei-wei | Key Labortory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, CAS, Changchun 130102, China |
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| Abstract: |
| Agricultural activities in vast farmlands may profoundly affect local or regional air quality. China is a large agricultural country. Deep understanding of particulate matter(PM) emissions from different field operations is helpful to support air quality modeling and to develop suitable mitigation strategies. In this paper, we reviewed the recent advances in the research on soil aerosol or mineral dust emissions during field tillage and crop harvest processes. These two operations were identified to be two largest anthropogenic approaches of agricultural PM emissions by occident. Under mechanical disturbances, soil particles could be disintegrated and entrained to in the air, especially particle diameter less than 10 μm(i.e., PM10). Three aspects were discussed here. First, various factors influencing PM10 emissions during the two processes were analyzed, inlcuding tillage and harvest methods, soil texure, soil moisture content and surface wind speed as well as crop types. Second, bottom-to-up estimate methods of PM10 and PM2.5 inventory compiling and their advantages and disadvantages were summarized and discussed. Third, field measurements of emission factor(EF) and best choice for agricultural PM inventory were described. In addition, major control measures to reduce soil aerosols from field tillage or crop harvest were presented. Finally, future research on agricultural particulate matter emissions in China is proposed. |
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