【摘要】 根据北京市2000年城市园林绿化普查结果,对北京市园林绿地植被挥发性有机物(VOCs)的排放情况进行研究,建立了北京市园林绿地天然源VOCs排放清单.结果表明,2000年北京市园林绿地VOCs的年总排放量(以C计)约为3.85万t,其中异戊二烯为3.09万t,单萜烯为0.59万t,其他VOCs(OVOC)为0.16万t.排放具明显的季节依赖性,其中夏季排放量最大,为2.49万t,占全年的64.7%;冬季最少,为0.0086万t,占全年的0.2%.城八区总排放量比远郊区县高,排放量最高的是朝阳区,为1.37万t,占全市的36.0%,其次为海淀、丰台、石景山区,分别占16.2%、13.8%、4.7%.更多还原

【Abstract】 Based on the general survey results of urban garden of Beijing City in 2000, the VOC emission condition of urban garden greenland plants in Beijing City was studied, the natural emission inventory of VOCs in the garden greenland in Beijing City was established. The 2000 annual total emission amount was about 3.85×104 C, in which isoprene was 3.09×104 C, monoterpenes was 0.59×104 C and other VOCs(OVOC) was 0.16×104 C. The emissions possessed distinct seasonal dependence in which the emission amount in summer was the largest, being 2.49 104 C, occupying 64.7% of annual emission; in winter was the lowest, being 0.0086×104 C, occupying 0.2% of annual emission. The total emission amount in urban areas were higher than that in sub-urban areas, the highest was in Chaoyang district, being 1.37×104 C, occupying 36.0% of the entire city, followed by the emissions in Haidian, Fengtai and Shijingshan districts, occupying 16.2%, 13.8%, 4.7% respectively.更多还原