Spatiotemporal characteristics of fluoride accumulation in several greenbelt plants in Foshan City of Guangdong Province
佛山市几种绿地植物氟化物时空累积特征

The fluoride concentration in the leaves of Ficus virens var. sublanceolata, Ficus microcarpa, Ficus benjamina, Mangifera indica, Michelia alba and Elaeocarpus apiculatus grown in the Fushan urban greenbelt systems and that in the air above the greenbelt systems were measured, with their correlations analyzed. The results showed that the fluoride concentration in the air above test greenbelt systems ranked in the order of industrial greenbelt> traffic greenbelt>attached greenbelt in college campus>production greenbelt>park greenbelt. The air fluoride concentration above industrial greenbelt was 3.4 times as high as that above park greenbelt, and in all test greenbelt systems, the leaves of or two-year-old plants had an increasing fluoride concentration with time. There was a high correlation between the fluoride concentrations in air and plant leaves, which reflected the spatial characteristics of fluoride accumulation in greenbelt plants. The fluoride concentrations in the leaves of one- and two-year-old F. microcarpa and F. benjamina, one-year-old M. indica, and two-year-old M. alba could better indicate the air fluoride concentration in the urban greenbelt systems of Fushan City.