| 陈卫卫.农业土壤耕作大气颗粒物排放研究进展[J].农业环境科学学报,2015,34(7):1225-1232. |
| 农业土壤耕作大气颗粒物排放研究进展 |
| Research Progress in Atmospheric Particulate Matter Emissions from Agricultulral Tillage |
| 投稿时间：2015-02-11 |
| DOI：10.11654/jaes.2015.07.001 |
| 中文关键词: 气溶胶 PM2.5 PM10 空气质量 整地 收割 |
| 英文关键词: aerosol PM2.5 PM10 air quality land preparation harvest |
| 基金项目:国家自然科学基金(41205106, 41275158) |
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| 中文摘要: |
| 大面积农业活动中释放的颗粒物可能会显著影响其所在地及所在区域的空气质量。我国是农业大国,了解各农业区不同生产环节的颗粒物排放状况是编制国家农业源排放清单和探索减控措施的基础。通过综述近几十年来国内外关于农业土壤耕作造成的大气颗粒物排放的研究进展,对农业耕作产生的颗粒物组成、影响因素、排放清单编制以及模型模拟进行了归纳,重点讨论了清单编制中排放系数的问题,提出了今后我国农业人为源大气颗粒物排放研究需要加强的几方面内容。 |
| 英文摘要: |
| 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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