【摘要】 汽车尾气会给高速公路路域环境带来一定程度的硫(S)、铅(Pb)污染,而绿化树木可通过吸收作用从而有效降低这些污染物在空气中的含量,目前这方面的研究较少。对山东省高速公路路侧主要绿化树木叶片S、P质量分数的研究表明,I107杨树(Populus Linn.)叶片S、Pb质量分数与高速公路车流量呈显著正相关。I107杨树叶片S、Pb质量分数对高速公路路域环境污染具有一定指示作用,不同路段杨树叶片的S、Pb质量分数存在明显差异,济青高速公路路侧杨树叶片的S、Pb质量分数最高,其次是京沪高速,最低的是日东高速。I107杨和龙柏对S污染物的吸收能力较强,其次是垂柳(Salix babylonica L.),较差的是紫叶李(Prunus cerasifera cv.Pissardii.)、大叶女贞(Ligustrum lucidumAit)和雪松(Cedrus deodara(Roxb.)Loud);而I107杨和紫叶李对Pb的吸收能力较强。更多还原

【Abstract】 The concentrations of S and Pb in leaves of main green trees along expressways of Shandong province were studied in this paper. The results showed that positive correlations were found between S or Pb concentration in Populus Linn. and traffic vehicle density of expressways, which might be used to evaluate expressway pollution. The concentrations of S and Pb in leaves of Populus Linn. varied much in these expressways, with the highest content for Jinan-Qingdao expressway, the intermediate for Beijing-Shanghai expressway, and the lowest for Rizhao-Dongming expressway. Populus Linn. and Sabina chinensis cv.’Kaizuca’ had stronger absorption of S than Salix babylonica L., and S absorption ability of Prunus cerasifera cv. Pissardii, Ligustrum lucidum Ait and Cedrus deodara (Roxb.) Loud were the lowest. However, Populus Linn. and Prunus cerasifera cv Pissardii had stronger absorption of Pb than the others.更多还原