【摘要】 基于光温控模型,利用四川地区植被分布数据、WRF模拟-美国国家环境预报中心(NCEP)再分析气象数据、统计年鉴和文献等资料计算了2012年四川盆地区域9km×9km网格的天然源挥发性有机物(BVOCs)排放清单。结果显示,研究区域BVOCs的排放总量为7.56×10~5 t,其中异戊二烯、单萜烯和其他BVOCs排放量依次为4.08×10~5、1.85×10~5、1.63×10~5 t。绵阳和广元的BVOCs排放量明显高于其他地区(主要体现在异戊二烯的排放上),雅安、达州、巴中以及乐山排放量在2×10~4 t以上,成都、泸州、宜宾、南充以及德阳排放量在1×10~4 t以上,其余城市为1×10~4 t以下。BVOCs排放呈现出明显的空间分布特征,四川盆地四周植被茂盛的区域排放强度较高,部分网格排放强度大于10t/km~2。更多还原

【Abstract】 Based on the light and temperature control model method,plant cover data of Sichuan,reanalysis meteorological data modeled by WRF/National Centers for Environmental Prediction(NCEP),statistics data and reference data were used to calculate the biogenic volatile organic compounds(BVOCs)emissions in the region of Sichuan basin in 2012.The grid of the emission inventory was 9 km ×9 km.The study results indicated the emission of BVOCs was 7.56×10~5 t,and the isoprene,terpene and the other BVOCs emissions were 4.08×10~5,1.85×10~5 and1.63×10~5 t,respectively.The emissions of Mianyang and Guangyuan were obviously higher than that of the other areas,especially for the isoprene.Ya’an,Dazhou,Bazhong and Leshan all had emissions more than 2×10~4 t.Chengdu,Luzhou,Yibin,Nanchong and Deyang had emissions more than 1×10~4 t.Emission of the rest cities were all less than1×10~4 t.The BVOCs emission had a notable spatial distribution character.The region with dense vegetations showed higher emission intensity,and some grids had the emission flux more than 10 t/km~2.更多还原