Will different land uses affect heavy metal pollution in soils of roadside trees? An empirical study from Shanghai

Heavy metal pollution in roadside soil may harm humans, animals, plants, and local ecosystems. This study aimed to explore the sources and potential ecological risks of heavy metals in soils of roadside trees under different land uses, using soil samples collected from 136 roads across 16 administra...

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Bibliographic Details
Published in:Environmental monitoring and assessment 2023-11, Vol.195 (11), p.1388-1388, Article 1388
Main Authors: He, Kun, Wang, Junjie, Geng, Hefang, Qin, Zhenyan, Li, Nan, Zhang, Yanting, Yang, Ruiqing, Feng, Shucheng, Wang, Benyao
Format: Article
Language:English
Subjects:
Atmospheric Protection/Air Quality Control/Air Pollution
Cadmium
Chromium
Construction
Copper
Earth and Environmental Science
Ecology
Ecotoxicology
Emissions
Empirical analysis
Environment
Environmental Management
Environmental monitoring
Heavy metals
Industrial emissions
Industrial pollution
Land pollution
Land use
Lead
Megacities
Metal content
Monitoring/Environmental Analysis
Nickel
Pollution
Pollution levels
Roadsides
Soil
Soil pollution
Trees
Vehicle emissions
Zinc
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Summary:Heavy metal pollution in roadside soil may harm humans, animals, plants, and local ecosystems. This study aimed to explore the sources and potential ecological risks of heavy metals in soils of roadside trees under different land uses, using soil samples collected from 136 roads across 16 administrative districts in Shanghai. The contents, pollution characteristics, potential ecological risks, and sources of seven heavy metals were analyzed, including Cr, Ni, Cd, Pb, As, Cu, and Zn. Results showed that (1) land use patterns affected the heavy metal contents, with industrial and construction areas showing higher contents while agricultural and forestry areas lower; (2) the ranking of heavy metal pollution levels was Cd > As > Pb > Cu > Ni > Cr > Zn. Cd exhibited the highest potential ecological risk, falling within the moderate to considerable potential ecological risk interval; (3) the sources of Cu, Zn, Cr, Ni, Cd, and Pb were associated with traffic emissions, whereas As had independent other sources and Pb in industrial and construction areas was also influenced by industrial emissions. These results provide valuable references on the control of heavy metal pollutants and the management of land uses in megacities.
ISSN:0167-6369
1573-2959
DOI:10.1007/s10661-023-12021-y