Responses of Garden Greening Plants to Air Pollution in Guangdong Province and the Accumulation of Pollutants in Leaves
广东园林绿化植物对大气污染的反应及污染物在叶片的积累

One hundred and twenty-five woody plant species (including infraspec ific taxa) grown in pots and in the wild were investigated to evaluate their sensitivity response s to air pollution in Foshan and Guangzhou.The investigations were based on the differences of plant g rowth parameters (plant height, basal diameter, crown area, leaf area, number of new l eaves increased and leaf cast), physiological characters(including net photosynthetic rate, chlo rophyll fluorescence characters, leaf cell membrance leakage rate and chlorophyll content) and plant injury tolerance. All the plants studied were exposed to polluted environments with combined poll utants such as acid rain, sulphide, fluoride and dust in industrial area, heavy traffic density area and residential site. As results all the plants were classified into three categories: (1) most tolerant species (35 species); (2) less tolerant (41species); (3)most sensitive (49 species). The accumulation level of S, F and Pb in leaves of 48 species were also determined. A list of garden plants concerning sensitivity res ponse to pollutants is given. The results can provide useful information for urban greening in simi lar atmospheric environments.