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Biomonitoring and phytoremediation potential of the leaves, bark, and branch bark of street trees for heavy metal pollution in urban areas.
Liu, Yanping; Zhao, Xiulian; Liu, Ruiming; Zhou, Jinxing; Jiang, Zeping.
Afiliação
  • Liu Y; Institute of Forest Ecology, Environment and Nature Conservation, Chinese Academy of Forestry, Beijing, China.
  • Zhao X; State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China.
  • Liu R; Gansu Province Academy of Qilian Water Resource Conservation Forests Research Institute, Zhangye, China.
  • Zhou J; School of Soil and Water Conservation, Beijing Forestry University, Beijing, China.
  • Jiang Z; Institute of Forest Ecology, Environment and Nature Conservation, Chinese Academy of Forestry, Beijing, China. jiangzp@caf.ac.cn.
Environ Monit Assess ; 194(5): 344, 2022 Apr 07.
Article em En | MEDLINE | ID: mdl-35389092
Tree tissues can accumulate heavy metals from the environment. We therefore aimed to evaluate the presence of the metals Pb, Cr, Mn, Cu, and Zn in four street tree species, namely Ailanthus altissima, Broussonetia papyrifera, Pinus tabuliformis, and Rhus typhina, along the highway side of Beijing, China. Sampling from the leaves, trunk bark, and branch annual segment bark of trees was conducted in the summer of 2021, and the concentration of heavy metals was determined. The results revealed the highest average concentration of total heavy metals in the R. typhina leaves (23.724 mg/kg) and barks (14.454 mg/kg). The maximum bio-concentration factor was noted for Zn in the B. papyrifera leaves (0.36) and P. tabuliformis barks (0.21). The maximum comprehensive bio-concentration index was observed for the B. papyrifera leaves (0.225) and P. tabuliformis bark (0.108). The maximum metal accumulation index was measured in the R. typhina leaves (29.682) and bark (12.407). Based on the air-originated metals, P. tabuliformis showed the highest dust collection capacity. In general, B. papyrifera and P. tabuliformis exhibited the highest absorption rate from the soil relative to the other studied species. R. typhina demonstrated the strongest phytoremediation ability for heavy metal pollution in air. In addition, our results proved that the branch annual segment bark of P. tabuliformis is an excellent record carrier that can be used to monitor heavy metal pollution in a specific time duration in an urban area.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes do Solo / Metais Pesados País/Região como assunto: Asia Idioma: En Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes do Solo / Metais Pesados País/Região como assunto: Asia Idioma: En Ano de publicação: 2022 Tipo de documento: Article