Trends in Heavy Metal Pollution in Agricultural Land Soils of Tropical Islands in China (2000–2024): A Case Study on Hainan Island DOI Creative Commons
Erping Shang, Yong Ma, Wutao Yao

et al.

Toxics, Journal Year: 2024, Volume and Issue: 12(12), P. 934 - 934

Published: Dec. 23, 2024

Heavy metal contamination in agricultural soils has garnered increasing attention, yet research on the spatiotemporal trends of heavy pollution tropical regions with multiple annual crop harvests remains limited. This study examines data from 41 studies published between 2000 and 2024, including 206 records 4122 sampling points Hainan Island China, to investigate spatial distribution temporal pollution. The results reveal that average concentrations Cd, Pb, As, Cr, Hg surface soil samples lands are 0.12, 28.28, 4.36, 63.98, 0.075 mg/kg, respectively, all below risk screening thresholds set by Soil Pollution Risk Control Standard for Agricultural Land (GB 15618-2018). Spatially, exhibit considerable regional variation. Cd levels lower central region but higher northern southern parts island. Both cumulative index potential ecological elevated at ends, indicating more severe these areas. Pb As show similar patterns, west east. Conversely, Cr northeast southwest. ends island, though overall areas remain relatively low. Temporally, concentration metals increased over past two decades, peak values occurring 2017 2023. From 2002 2013, variation was modest, while largest fluctuations occurred 2014 2016. Among metals, exhibited most significant increase, pollution, followed Hg. showed contamination. Regarding exceedance rates, exceedances were evaluated against established GB15618-2018 GB15618-1995. Cd's rate approximately 1% 7.78% 20.93% following years, peaking 2017. rose slightly 0% 0.83%, sporadic starting 2015. Although minor, a point observed 2019. Exceedance rates significantly, 0.75% 7.50% 2019 1.94% 9.44% 2023, reflecting increases 4.8 10 times. These findings underscore need strengthened monitoring management safeguard land quality ensure sustainability local practices.

Language: Английский

Tracing sources-oriented ecological risks of metal(loid)s in sediments of anthropogenically-affected coastal ecosystem from northeast bay of Bengal DOI
Abu Reza Md. Towfiqul Islam, Md. Nashir Uddin,

Md. Fazle Rabbi Joy

et al.

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 211, P. 117354 - 117354

Published: Dec. 2, 2024

Language: Английский

Citations

1
Trends in Heavy Metal Pollution in Agricultural Land Soils of Tropical Islands in China (2000–2024): A Case Study on Hainan Island DOI Creative Commons
Erping Shang, Yong Ma, Wutao Yao

et al.

Toxics, Journal Year: 2024, Volume and Issue: 12(12), P. 934 - 934

Published: Dec. 23, 2024

Heavy metal contamination in agricultural soils has garnered increasing attention, yet research on the spatiotemporal trends of heavy pollution tropical regions with multiple annual crop harvests remains limited. This study examines data from 41 studies published between 2000 and 2024, including 206 records 4122 sampling points Hainan Island China, to investigate spatial distribution temporal pollution. The results reveal that average concentrations Cd, Pb, As, Cr, Hg surface soil samples lands are 0.12, 28.28, 4.36, 63.98, 0.075 mg/kg, respectively, all below risk screening thresholds set by Soil Pollution Risk Control Standard for Agricultural Land (GB 15618-2018). Spatially, exhibit considerable regional variation. Cd levels lower central region but higher northern southern parts island. Both cumulative index potential ecological elevated at ends, indicating more severe these areas. Pb As show similar patterns, west east. Conversely, Cr northeast southwest. ends island, though overall areas remain relatively low. Temporally, concentration metals increased over past two decades, peak values occurring 2017 2023. From 2002 2013, variation was modest, while largest fluctuations occurred 2014 2016. Among metals, exhibited most significant increase, pollution, followed Hg. showed contamination. Regarding exceedance rates, exceedances were evaluated against established GB15618-2018 GB15618-1995. Cd's rate approximately 1% 7.78% 20.93% following years, peaking 2017. rose slightly 0% 0.83%, sporadic starting 2015. Although minor, a point observed 2019. Exceedance rates significantly, 0.75% 7.50% 2019 1.94% 9.44% 2023, reflecting increases 4.8 10 times. These findings underscore need strengthened monitoring management safeguard land quality ensure sustainability local practices.

Language: Английский

Citations

1