| 北京地区植物VOCs排放速率的测定 |
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| 引用本文： | 王志辉,张树宇,陆思华,白郁华.北京地区植物VOCs排放速率的测定[J].环境科学,2003,24(2):7-12. |
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| 作者姓名： | 王志辉 张树宇 陆思华 白郁华 |
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| 作者单位： | 北京大学环境科学中心,北京,100871 |
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| 基金项目： | 国家自然科学基金资助项目(40075027) |
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| 摘 要： | 植物释放的挥发性有机化合物(VOCs)主要集中在异戊二烯和单萜烯上,这些种类的化合物占生物圈VOCs释放量2/3.采用封闭式采样和气相色谱分析对北京地区23种典型植物异戊二烯和单萜烯排放速率进行测定和研究,发现阔叶树(如槐,垂柳等)主要释放异戊二烯;而针叶树(如油松)和果树主要释放单萜烯.同时发现植物异戊二烯的释放受光照和温度的影响,而单萜烯的释放则主要受温度的影响.
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| 关 键 词： | VOCs 异戊二烯 单萜烯 排放速率 |
| 文章编号： | 0250-3301(2003)02-06-0007 |
| 收稿时间： | 2002/4/11 0:00:00 |
| 修稿时间： | 7/1/2002 12:00:00 AM |
Screenings of 23 Plant Species in Beijing for Volatile Organic Compound Emissions |
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| Wang Zhihui,Zhang Shuyu,Lu Sihua and Bai Yuhua.Screenings of 23 Plant Species in Beijing for Volatile Organic Compound Emissions[J].Chinese Journal of Environmental Science,2003,24(2):7-12. |
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| Authors: | Wang Zhihui Zhang Shuyu Lu Sihua and Bai Yuhua |
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| Institution: | Center for Environmental Science, Peking University, Beijing 100871, China. wang_zhihui@water.pku.edu.cn |
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| Abstract: | The VOCs emissions from plants are mainly isoprene and monoterpenes, which account for 2/3 of the total emissions from biosphere. 23 kinds of typical plants in Beijing area were screened to estimate the emission rates of isoprene and monoterpenes by adopting a bag-enclosure sampling method followed by a GC-FID analysis. It was found that such deciduous trees as Sophora japnica and Salix babyloniaca etc. were mainly emitting isoprene and coniferous trees as Pinus tabulaetormis mainly released monoterpenes. The study also showed that the emission of isoprene were affected by both temperature and Photosynthetic Active Radiation(PAR), while monoterpene emissions were mainly temperature-dependent. |
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| Keywords: | VOC isoprene monoterpenes emission factor |
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