【摘要】 采用封闭式采样方法及光离子化气体分析仪 (GC_PID)直接分析测定了太湖地区的 94种植物的异戊二烯排放通量 ,结果表明 :在太湖地区 ,排放异戊二烯的植物有山茶、芭蕉、白栎、茶、垂柳、刺槐、短柄抱栎、法国梧桐、风尾竹、枫香、钻天杨、合欢、河柳、胡枝子、槐树、黄檀、箭竹、苦楝、苦竹、莲、芦苇、罗汉松、毛白杨、毛竹、女贞、山鸡椒、十大功劳、柿子、算盘子、甜槠、香蒲、水稻、云实、樟树、梓榈、紫荆、紫穗槐、紫藤。毛竹作为太湖地区分布非常广泛的一种人工植被 ,大量释放异戊二烯 ,排放潜力达 1 1 6 .0 4± 2 3 .3 5ug·g- 1 dw·h- 1 ,有可能会影响到该地区的大气臭氧浓度。更多还原

【Abstract】 Due to the important role of volatile organic compounds (VOC) in affecting the short_term chemistry of the lower atmosphere, the measurement and estimation of VOC, especially isoprene from plants have been paid a great attention. In this paper, 94 plant species in the Tai lake basin were measured using an enclosure sampling method followed by GC_PID direct analysis. The results showed that the following species release isoprene: Camellia japonica, Musa basjoo , Quercus fabri, Camellia sinensis, Salix babylonica, Robinia pseudoacacia, Quercus glandulifera, Platanus acerifolia, Bambusa multiplex, Liqnidambar formosana, Broussonetia papyrifera, Albizzia jutibrissin, Salix chaenomeloides, Lespedeza bicolor, Sophora japonica, Dalbergia hupeana, Indocalamus latifolius, Melia azedarach, Pleiobcastus amarus, Nelumbo nucifera, Pragmites commanis, Podocarpus macrophyilus, Populus tomentosa, Phyllostachys pubescens, Ligustrum lucidum, Litsea cubeba, Mahonia fortunei, Diospyros glaucifolia, Glochidion puberum, Castanopris eyrei, Typha orient, Oryza sativa, Caesalpinia fruticosa, Cinnamomum camphora, Trachycarpus fortunei, Cercis chinensis, Amorpha fruticosa, Wisteria sinensis, Populus nigra. Other remaining trees had no sign for isoprene emission. Bamboo which is widely distributed in Tai Lake basin emit large amount of isoprene(emission potential are 116.04±23.35 ug·g -1 dw·h -1 ) which will strongly influence the local ozone concentration in lower atmosphere.更多还原