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[Meta-analysis of Heavy Metal Pollution in Soil-crop Systems in China's Urban-Rural Fringe].
Bai, Zong-Xu; Yang, Li; Wang, Hong-Lei; Chen, Tao.
Afiliación
  • Bai ZX; College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.
  • Yang L; College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.
  • Wang HL; College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.
  • Chen T; College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.
Huan Jing Ke Xue ; 45(8): 4766-4779, 2024 Aug 08.
Article en Zh | MEDLINE | ID: mdl-39168694
ABSTRACT
Owing to the influence of human activities, the issue of heavy metal pollution in farmland soil at the urban-rural fringe has become increasingly prominent. An accurate understanding of the characteristics of soil-crop heavy metal pollution in these areas is of great significance for ensuring food safety and promoting social sustainable development. Most of the existing studies rely on small-scale field monitoring, but research at the national level has not effectively captured the unique pollution dynamics of this urban-rural interface. Based on the published literature, the present study investigated the status of heavy metal pollution in the soil-crop system within China's urban-rural fringe through Meta-analysis. On this basis, the study evaluated the risks to human health associated with heavy metals in major crops in a given region. The results showed that heavy metals were accumulated in farmland soil in the urban-rural fringe of China, especially in Cd （Igeo = 0.89） pollution, and its distinct spatial heterogeneity patterns emerged. When considering different types of cultivated land, paddy fields and irrigated land exhibited a higher tendency of heavy metal accumulation. From the varying urbanization levels, the accumulation of heavy metals in soils of small and medium-sized cities was more obvious. For crops in the urban-rural fringe, Cd and Pb had the highest exceedance rate in rice （28.25% and 39.64%） and wheat （27.72% and 42.72%）. The health risk assessment results of heavy metals in crops showed that Cd was the main element that posed human health risks, which had some degree of non-carcinogenic risk and unacceptable carcinogenic risk to both children and adults.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Monitoreo del Ambiente / Ciudades / Productos Agrícolas / Metales Pesados País/Región como asunto: Asia Idioma: Zh Revista: Huan Jing Ke Xue Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: China
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes del Suelo / Monitoreo del Ambiente / Ciudades / Productos Agrícolas / Metales Pesados País/Región como asunto: Asia Idioma: Zh Revista: Huan Jing Ke Xue Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: China