文献类型：期刊文献

英文题名：Biomonitoring and phytoremediation potential of the leaves, bark, and branch bark of street trees for heavy metal pollution in urban areas

作者：Liu, Yanping[1] Zhao, Xiulian[2] Liu, Ruiming[3] Zhou, Jinxing[4] Jiang, Zeping[1]

通信作者：Jiang, ZP[1]

机构：[1]Chinese Acad Forestry, Inst Forest Ecol Environm & Nat Conservat, Beijing, Peoples R China;[2]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat, Natl Forestry & Grassland Adm,Res Inst Forestry, Beijing, Peoples R China;[3]Gansu Prov Acad Qilian Water Resource Conservat F, Zhangye, Peoples R China;[4]Beijing Forestry Univ, Sch Soil & Water Conservat, Beijing, Peoples R China

年份：2022

卷号：194

期号：5

外文期刊名：ENVIRONMENTAL MONITORING AND ASSESSMENT

收录：;EI(收录号：20221611972710);Scopus(收录号：2-s2.0-85128095001);WOS:【SCI-EXPANDED(收录号:WOS:000779371000015)】；

基金：This study was funded by the Central Public-interest Scientific Institution Basic Research Fund (CAFYBB2017SY003) and Fundamental Research Funds for the Central NonProfit Research Institution of Chinese Academy of Forestry (CAFYBB2018ZB001).

语种：英文

外文关键词：Branch annual segments bark; Comprehensive bio-concentration index; Air-originated metals; Heavy metal accumulation; Temporal change of pollution

摘要：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.