中国亚热带地区2005~2014年秸秆露天燃烧排放污染物

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Abstract

The emission factors of CO, CO₂, NO_x, C_xH_y and PM_2.5 in rice, wheat, beans, rape, maize and cotton were measured by indoor simulation experiment. In addition, the crop straw yield and the amount of field combustion were calculated, based on the statistical yearbook, in order to estimate total emissions of various types of pollutants from open burning of straw in eight provinces of subtropical China during 2005~2014, and temporal and spatial trends were analyzed. The results showed that the average emission factors of CO, CO₂, NO_x, C_xH_y and PM_2.5 from combustion of crop straw were 159.55, 1234.96, 1.88, 31.27 and 7.62g/kg, respectively. The highest average emission factor of each pollutant was for cotton (172.40g/kg), beans (1348.77g/kg), rape (4.08g/kg), rice (66.78g/kg) and beans (10.15g/kg). The output of crop straw and the total amount of field combustion in subtropical areas of China were 1221.281Mt and 261.729Mt, respectively during the study period. Emissions of CO, CO₂, NO_x, C_xH_y and PM_2.5 were 40890.56, 324104.01, 370.79, 14329.36 and 1835.94kt, respectively. The emissions of NO_x and other pollutants from rice straw burning in the field accounted for more than 60% and 75% of the total emission in the study area. The emission contribution of wheat and cotton was less than 5% of the total emitted pollutants. There was also spatial variation in emission of different pollutants. The emission of pollutant exhibited a downward trend in Zhejiang, Fujian and Guizhou while rising trend was observed in Guangdong, Guangxi, Yunnan and Jiangxi.

Key words： indoor simulation test contaminants emission factors emission inventory particulate matter subtropical region

Received: 13 April 2017

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X51

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	Articles by authors
	YANG Xia-jie
	JU Yuan-hua
	JIN Quan-feng
	TIAN Chao
	CAI Qi-jun
	GUO Fu-tao

Cite this article:

YANG Xia-jie,JU Yuan-hua,JIN Quan-feng等. Pollutants emission from crop straw field burning in subtropical region of China during 2005~2014[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(11): 4052-4061.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2017/V37/I11/4052

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