一种基于GIS的植物VOC排放量估算方法
首发时间:2009-04-07
摘要:植物排放的VOC主要包括异戊二烯、单萜烯和其它VOC。对植物VOC排放量的测算通常借助于实验手段,采用封闭式采样和气相色谱分析对植物VOC排放速率进行测定,这种测算方法较为精确但也带来了较高的实验成本,为降低成本、提高测算速度,本文提出了一种基于GIS和往年VOC排放数据的估算方法,并以上海市为例对算法进行了实践,计算结果表明,2006年上海市植物排放异戊二烯、单萜烯的质量分别为2.3×109和2.9×109。
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An Estimation method of Plants VOC Emissions Based on GIS
Abstract:The plants VOCs mainly embrace isoprene, terpene and other single-VOC. The conventional estimation method of plants VOC volume relies on experimentation which adopts a bag-enclosure sampling method followed by a GC-FID analysis to measure the emission rates of isoprene and terpene. The method is costly although it’s usually accurate. In order to cut down the expense and to improve the computing speed, the authors raised a new estimation method based on GIS and VOC emission data in a previous year, and make it work in the estimation of Shanghai’ plants VOC emission volume. According to the result of the computation, the emission volume of isoprene and terpene in Shanghai respectively amounted to 2.3×109 and 2.9×109.
Keywords: VOC GIS Buffer Distance ArcEngine
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