基于GloBEIS模型的徐州市天然源VOCs排放量估算

摘要

The emissions of biogenic VOCs at 1 km resolution for Xuzhou area were estimated basd on the GloBEIS model and land sueface data, such as land cover, vegetation, and meteorological data. Of the total 113,000 tons emissions of biogenic VOCs, isoprene was 4,100 tons, monoterpenes were 73,700 tons, and other VOCs were 36.2 thousands tons.The emissions in summer accounted for 58.38% of total yearly emission,while the winter only accounted for 1.73%, the amount of emissions increased firstly and then decreased, and it reached the maxium at noon or afternoon during a day, The spatial distribution of biogenic VOCs emission was closely related to the vegetation distribution, major was located in the less-urbanized regions and lush vegetation areas.%本研究利用实际观测的气象数据和基于遥感图像解译的土地覆被和植被生长状况数据,采用GloBEIS模型,建立了徐州地区1 km分辨率天然源VOCs排放清单.结果表明,徐州市天然源VOCs年度排放总量为11.3万t,其中异戊二烯0.41(3.59%)万t,单萜烯7.37万t(64.64%),其他VOCs为3.62万t(31.77%);夏季排放量占全年的58.38%,冬季仅占1.73%,1 d之中排放量先增加后减少,在中午或午后达到最大值;天然源VOCs的空间分布与植被类型的分布密切相关,排放高值区主要分布在城镇化程度低植被覆盖度高的区域.