Physiological responses and accumulation of pollutants in woody species under in situ polluted condition in Southern China.
Physiological leaf traits and accumulation of pollutants of ten woody species in response to air pollution at seriously polluted site Sanguigang (SGG) and control site Maofengshan (MFS) in Southern China were studied. Net photosynthetic rates of most species at SGG were lower than those at MFS, but stomatal conductance (g(s)) showed opposite trend. The specific leaf area of Aporusa                 dioica, Sapium discolor, Schefflera                 octophylla and Toxicodendron                 succedaneum were significantly, 46.77, 13.09, 55.11 and 23.51 %, higher in SGG than in MFS, while chlorophyll content being the opposite. A. dioica had the highest sulphur (S) content at both sites (11.74 mg g(-1) at SGG and 11.07 mg g(-1) at MFS). Heavy metals concentrations were generally higher in species at SGG than at MFS. S. octophylla showed significantly higher concentrations of Zn, Cd and Mn (341.81, 2.41 and 2,287.29 μg g(-1)) than other species at SGG. Moreover, A. dioica had the highest Pb concentration (9.19 μg g(-1)), and L. glutinosa showed the highest Cr concentration (3.40 μg g(-1)). According to the integrated results, we infer that A. dioica, S. octophylla and L. glutinosa are the promising species for phytoremediation in the ceramic industry polluted environment.
Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, China.
Ling-Ling
LL
Zhang
Hang-Er
HE
Wang
Jiong
J
Li
Yuan-Wen
YW
Kuang
Da-Zhi
DZ
Wen
D000393:Air Pollutants / Q000009:adverse effects* / Q000032:analysis*; D001673:Biodegradation, Environmental; D002516:Ceramics; D002681:China; D004781:Environmental Exposure / Q000009:adverse effects / Q000032:analysis*; D004784:Environmental Monitoring; D019216:Metals, Heavy / Q000032:analysis* / Q000633:toxicity*; D018515:Plant Leaves / Q000737:chemistry* / Q000187:drug effects; D018521:Plant Physiological Phenomena / Q000187:drug effects*; D012621:Seasons; D013045:Species Specificity
D000393:Air Pollutants; D019216:Metals, Heavy