Wang Zhihui, Zhang Shuyu, Lu Sihua, Bai Yuhua
Center for Environmental Science, Peking University, Beijing 100871, China.
Huan Jing Ke Xue. 2003 Mar;24(2):7-12.
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.
植物排放的挥发性有机化合物主要是异戊二烯和单萜类化合物，它们占生物圈总排放量的2/3。通过采用袋式封闭采样法并结合气相色谱 - 火焰离子化检测（GC - FID）分析，筛选了北京地区23种典型植物，以估算异戊二烯和单萜类化合物的排放率。研究发现，国槐、垂柳等落叶乔木主要排放异戊二烯，油松等针叶树主要释放单萜类化合物。该研究还表明，异戊二烯的排放受温度和光合有效辐射（PAR）的影响，而单萜类化合物的排放主要取决于温度。
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