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中国秸杆焚烧及民用燃煤棕色碳排放的初步研究

蔡 竟 支国瑞 陈颖军 孟 凡 薛志钢 李 剑 方 引

蔡 竟, 支国瑞, 陈颖军, 孟 凡, 薛志钢, 李 剑, 方 引. 中国秸杆焚烧及民用燃煤棕色碳排放的初步研究[J]. 环境科学研究, 2014, 27(5): 455-461. doi: 10.13198/j.issn.1001-6929.2014.05.01
引用本文: 蔡 竟, 支国瑞, 陈颖军, 孟 凡, 薛志钢, 李 剑, 方 引. 中国秸杆焚烧及民用燃煤棕色碳排放的初步研究[J]. 环境科学研究, 2014, 27(5): 455-461. doi: 10.13198/j.issn.1001-6929.2014.05.01
CAI Jing, ZHI Guo-rui, CHEN Ying-jun, MENG Fan, XUE Zhi-gang, LI Jian, FANG Yin. A Preliminary Study on Brown Carbon Emissions from Open Agricultural Biomass Burning and Residential Coal Combustion in China[J]. Research of Environmental Sciences, 2014, 27(5): 455-461. doi: 10.13198/j.issn.1001-6929.2014.05.01
Citation: CAI Jing, ZHI Guo-rui, CHEN Ying-jun, MENG Fan, XUE Zhi-gang, LI Jian, FANG Yin. A Preliminary Study on Brown Carbon Emissions from Open Agricultural Biomass Burning and Residential Coal Combustion in China[J]. Research of Environmental Sciences, 2014, 27(5): 455-461. doi: 10.13198/j.issn.1001-6929.2014.05.01

中国秸杆焚烧及民用燃煤棕色碳排放的初步研究

doi: 10.13198/j.issn.1001-6929.2014.05.01
基金项目: 国家自然科学基金项目(41173121,41373131);国家环境保护公益性行业科研专项(201209007)

A Preliminary Study on Brown Carbon Emissions from Open Agricultural Biomass Burning and Residential Coal Combustion in China

  • 摘要: 近年来的研究表明,在BC(黑碳)和OC(有机碳)之间,还存在着一种有弱吸光能力的OC,因大多显棕黄色而被称为BrC(brown carbon,棕色碳). 广泛存在的秸杆焚烧和冬季大量民用燃煤的使用,使国内BrC排放严重,但鲜见对其排放量的测算. 采用七波段黑碳仪(aethalometer)方法,对夏季小麦秸杆焚烧过程及冬季民用炉燃煤过程产生的烟气进行现场监测,根据BrC与BC的光谱关联性差别,分化出RBrC/BC(总光学衰减中BrC和BC的相对贡献). 结果表明:麦秆焚烧和民用燃煤烟气的RBrC/BC分别为1.754±0.278和0.183±0.142. 借助RBrC/BC值,结合现有的BC排放清单(2000年),初步推算出中国民用燃煤和秸杆田间焚烧BrC的排放总量(以BC当量计,下同)为(270.6±101.6)Gg,接近同期BC排放量的一半;其中秸杆焚烧的BrC排放量为(175.4±27.8)Gg,约占二者总量的65%;民用燃煤的BrC排放量为(95.2±73.7)Gg,约占35%. 该研究结果可为更全面的BrC排放测算奠定基础,并为研究BrC的大气化学及辐射强迫提供依据.

     

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出版历程
  • 收稿日期:  2013-11-21
  • 修回日期:  2014-03-02
  • 刊出日期:  2014-05-25

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