Abstract:Ficus virens Ait. var. sublanceolata (Miq.) Corner, Lagerstroemia speciosa (L.) Pers., Mangifera indica L., Ficus microcarpa L. Cinnamomum burmanii (Nees) Bl., Ficus benjamina L.Michelia alba DC., and Bauhinia blakeana (Dunn) are common urban roadside trees in Foshan, Guangdong. They are subjected to many pollutants from automobile emissions, such as SO_2 and the heavy metals Pb and Cd. The comparatively pollution-free parks far from the traffic environment were used as a control site to study the responses...