河南省夏季秸秆焚烧污染物排放量的估算与分析

基于2007年夏季秸秆焚烧卫星遥感监测资料,结合粮食产量、谷草比、排放因子等,估算了河南省秸秆焚烧各污染物的排放量。结果表明,2007年夏季河南省秸秆焚烧共排放：PM2.5 30 433.9 t、SO2 1 586.2 t、NOx 12.2 t、NH3 76.1 t、CH4 39.6 t、VOC 82.2 t、CO477.8 t、CO2 2 799.9 t。秸秆焚烧污染物排放量空间分布受小麦种植面积影响较大,中东部多于西部,其中周口、驻马店和南阳排放量最多;夏季秸秆焚烧较为集中,PM2.5的排放多集中在5月下旬和6月上旬,且与郑州市PM2.5日均浓度有较好的相关性。

Estimation of Pollutants Emission from Straw Burning in Summer in Henan Province

Emission of various pollutants from straw burning in the summer of 2007 was estimated according to remote sensing data combined with data of winter wheat yields,grain-straw ratio and emission factors,etc.The data showed that emissions of PM2.5 and SO2 were estimated at 30 433.9 t and 1 586.2 t,respectively.Meanwhile,other pollutants included NOx 12.2 t,NH3 76.1 t,CH4 39.6 t,VOC 82.2 t,CO 477.8 t,and CO2 2 799.9 t.Pollutant emission was higher in the central and eastern regions of Henan than that in the western,especially in Zhoukou,Zhu-madian and Nanyang.This result indicated a strong correlation between polutant emission and distribution of winter wheat planting area.As straw burning usually occurs in summer,PM2.5 emission was mainly emitted in late May and early June,which has a good correlation with av-erage daily PM2.5 concentration in Zhengzhou.