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 2 3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 .
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.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2003年第2期7-12,共6页
Environmental Science
基金
国家自然科学基金资助项目 (40 0 75 0 2 7)
