重点煤电基地大气污染物扩散对京津冀的影响

基于排放源清单，采用空气质量模式CAMx模拟现状情景下，鄂尔多斯、宁东与锡林格勒排放污染物扩散对京津冀地区的影响.结合3地区已批复环境影响报告、规划环评与战略环评等污染物排放数据，估算未来情景下3地区能源基地污染物排放对京津冀的影响.结果表明：现状情景下，3地区排放的PM_2.5、SO₂与NO_x对京津冀的贡献浓度范围分别为0.079~1.134，0.012~0.633，0.008~0.852μg/m³，冬季对京津冀地区的影响要高于夏季，对京津冀地区冬季的平均贡献浓度值为0.710，0.339与0.413μg/m³，影响较大的京津冀城市为衡水市、石家庄市、邢台市、邯郸市与保定市；未来情景下3地区能源基地排放的PM_2.5、SO₂与NO_x对京津冀城市浓度贡献范围分别为0.049~0.773，0.003~0.176，0.008~0.731μg/m³，冬季平均贡献浓度值为0.475，0.096与0.357μg/m³.

Influence of air pollutants transport from key coal and electricity production bases on Beijing-Tianjin-Hebei region

The regional air quality model CAMx was used to simulate the source contributions from Erdos, Ningdong and Xilingol (ENX) to the Beijing-Tianjin-Hebei region (BTH). The air quality impacts on the BTH region were evaluated using projected future emission inventory with the emission data from the approved environmental impact assessment, air quality planning and strategic planning, and the current emission inventory in ENX as two different scenarios. The results showed that the modeled contributions of PM_2.5, SO₂ and NO_x from energy bases in ENX to BTH were in the ranges of 0.079~1.134μg/m³, 0.012~0.633μg/m³ and 0.008~0.852μg/m³, respectively with current emissions. The impacts from ENX on BTH were higher in winter with the averaged values of 0.710, 0.339 and 0.413μg/m³, respectively than that in summer. It has greater influence on air quality in Hengshui, Shijiazhuang, Xingtai, Handan and Baoding than the other cities in BTH. The modeled contributions of PM_2.5, SO₂ and NO_x from energy bases in ENX using future emissions to BTH were in the ranges of 0.049~0.773μg/m³, 0.003~0.176μg/m³ and 0.008~0.731μg/m³, respectively, with the averaged values of 0.475,0.096, and 0.357μg/m³ in winter.