Characteristics and Risk Assessment of Heavy Metal Contamination in Arable Soils Developed from Different Parent Materials

Junlei Wang, Chunyu Dong, Sijing Sun, Shiqi Peng, Liyuan Mu, Naiming Zhang and Li Bao ()
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Junlei Wang: College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China
Chunyu Dong: College of Water Resources, Yunnan Agricultural University, Kunming 650201, China
Sijing Sun: College of Water Resources, Yunnan Agricultural University, Kunming 650201, China
Shiqi Peng: College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China
Liyuan Mu: College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China
Naiming Zhang: College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China
Li Bao: College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China

Agriculture, 2024, vol. 14, issue 11, 1-19

Abstract: This study analyzes the heavy metal pollution in cultivated soils developed from different parent materials in Yunnan Province and assesses their risk levels. The results show significant regional differences in soil heavy metal pollution, greatly influenced by the type of parent material. Cadmium (Cd) pollution is most severe in multiple parent material soil regions, particularly in areas with carbonate and purple rocks, exhibiting a high pollution risk. Other heavy metals such as zinc (Zn), copper (Cu), and lead (Pb) also show varying degrees of enrichment in different parent material zones, posing potential pollution risks. The soil pollution levels of heavy metals were classified using the geo-accumulation index method. It was found that soils developed from carbonate rocks and purple rocks have the most severe heavy metal pollution, while soils from quartzitic rocks, acidic crystalline rocks, and basalt exhibit relatively lower pollution levels. By analyzing the characteristics of heavy metal pollution in different parent materials, this study provides a scientific basis for regional soil pollution management and sustainable agricultural development.

Keywords: parent material; cultivated soil; pollution characteristics; risk assessment (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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