Anthropogenic Contribution and Migration of Soil Heavy Metals in the Vicinity of Typical Highways
To reveal the secondary anthropogenic contribution and accumulation rate of heavy metals in highway-side soils, we studied soil heavy metals on three representative highways in Southeast China, with different traffic intensities, service years, land use patterns and distances from roads, with high-r...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/2/303 |
| _version_ | 1797622936000004096 |
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| author | Jinling Yang Yuguo Zhao Xinling Ruan Ganlin Zhang |
| author_facet | Jinling Yang Yuguo Zhao Xinling Ruan Ganlin Zhang |
| author_sort | Jinling Yang |
| collection | DOAJ |
| description | To reveal the secondary anthropogenic contribution and accumulation rate of heavy metals in highway-side soils, we studied soil heavy metals on three representative highways in Southeast China, with different traffic intensities, service years, land use patterns and distances from roads, with high-resolution sampling of soil profiles. Concentrations of soil Cu, Zn, Pb and Cd were measured. The comparison of concentrations in surface soils with original values and their vertical distributions shows that soils within 150 m of the highway side are contaminated by heavy metals, with surface accumulation and possible movement down the profiles. The transferring depth of heavy metals was 10–30 cm. The contribution ratios of heavy metals were 1.0–30.5% in the surface at 30 cm, with the sequence of Cd >> Cu > Zn > Pb. The accumulation rates were 1.27–2.03 kg Cu ha<sup>−1</sup> y<sup>−1</sup>, 2.44–5.27 kg Zn ha<sup>−1</sup> y<sup>−1</sup>, 0.71–1.40 kg Pb ha<sup>−1</sup> y<sup>−1</sup> and 0.010–0.018 kg Cd ha<sup>−1</sup> y<sup>−1</sup> in soils within 50 m range. Furthermore, the accumulation of these metals varied with the traffic intensity, service years and land use patterns. Soils under forest have less heavy metal accumulation, which suggests a protective forest to set beside highways at a distance of at least 50 m to prevent soils from being contaminated. |
| first_indexed | 2024-03-11T09:18:18Z |
| format | Article |
| id | doaj.art-cd28ce26c60d4633b3a9d5cbc4a3bc85 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-11T09:18:18Z |
| publishDate | 2023-01-01 |
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| series | Agronomy |
| spelling | doaj.art-cd28ce26c60d4633b3a9d5cbc4a3bc852023-11-16T18:32:37ZengMDPI AGAgronomy2073-43952023-01-0113230310.3390/agronomy13020303Anthropogenic Contribution and Migration of Soil Heavy Metals in the Vicinity of Typical HighwaysJinling Yang0Yuguo Zhao1Xinling Ruan2Ganlin Zhang3State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, ChinaState Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, ChinaState Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, ChinaState Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, ChinaTo reveal the secondary anthropogenic contribution and accumulation rate of heavy metals in highway-side soils, we studied soil heavy metals on three representative highways in Southeast China, with different traffic intensities, service years, land use patterns and distances from roads, with high-resolution sampling of soil profiles. Concentrations of soil Cu, Zn, Pb and Cd were measured. The comparison of concentrations in surface soils with original values and their vertical distributions shows that soils within 150 m of the highway side are contaminated by heavy metals, with surface accumulation and possible movement down the profiles. The transferring depth of heavy metals was 10–30 cm. The contribution ratios of heavy metals were 1.0–30.5% in the surface at 30 cm, with the sequence of Cd >> Cu > Zn > Pb. The accumulation rates were 1.27–2.03 kg Cu ha<sup>−1</sup> y<sup>−1</sup>, 2.44–5.27 kg Zn ha<sup>−1</sup> y<sup>−1</sup>, 0.71–1.40 kg Pb ha<sup>−1</sup> y<sup>−1</sup> and 0.010–0.018 kg Cd ha<sup>−1</sup> y<sup>−1</sup> in soils within 50 m range. Furthermore, the accumulation of these metals varied with the traffic intensity, service years and land use patterns. Soils under forest have less heavy metal accumulation, which suggests a protective forest to set beside highways at a distance of at least 50 m to prevent soils from being contaminated.https://www.mdpi.com/2073-4395/13/2/303accumulation rateanthropogenic contributionelement migrationheavy metalshighway-side soilprotective forest |
| spellingShingle | Jinling Yang Yuguo Zhao Xinling Ruan Ganlin Zhang Anthropogenic Contribution and Migration of Soil Heavy Metals in the Vicinity of Typical Highways Agronomy accumulation rate anthropogenic contribution element migration heavy metals highway-side soil protective forest |
| title | Anthropogenic Contribution and Migration of Soil Heavy Metals in the Vicinity of Typical Highways |
| title_full | Anthropogenic Contribution and Migration of Soil Heavy Metals in the Vicinity of Typical Highways |
| title_fullStr | Anthropogenic Contribution and Migration of Soil Heavy Metals in the Vicinity of Typical Highways |
| title_full_unstemmed | Anthropogenic Contribution and Migration of Soil Heavy Metals in the Vicinity of Typical Highways |
| title_short | Anthropogenic Contribution and Migration of Soil Heavy Metals in the Vicinity of Typical Highways |
| title_sort | anthropogenic contribution and migration of soil heavy metals in the vicinity of typical highways |
| topic | accumulation rate anthropogenic contribution element migration heavy metals highway-side soil protective forest |
| url | https://www.mdpi.com/2073-4395/13/2/303 |
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