Ecological risk assessment of cultivated land in typical areas with high heavy metal background values in Guizhou Province

WANG Hui-Yan; PENG Min; MA Hong-Hong; ZHANG Fu-Gui

doi:10.11720/wtyht.2023.2130

2023 Vol. 47, No. 4

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Article navigation > Geophysical and Geochemical Exploration > 2023 > 47(4): 1109-1117

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WANG Hui-Yan, PENG Min, MA Hong-Hong, ZHANG Fu-Gui. 2023. Ecological risk assessment of cultivated land in typical areas with high heavy metal background values in Guizhou Province. Geophysical and Geochemical Exploration, 47(4): 1109-1117. doi: 10.11720/wtyht.2023.2130

Citation:

WANG Hui-Yan, PENG Min, MA Hong-Hong, ZHANG Fu-Gui. 2023. Ecological risk assessment of cultivated land in typical areas with high heavy metal background values in Guizhou Province. Geophysical and Geochemical Exploration, 47(4): 1109-1117. doi: 10.11720/wtyht.2023.2130

Ecological risk assessment of cultivated land in typical areas with high heavy metal background values in Guizhou Province

1. Institute of Geophysical & Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China;
2. Research Center of Geochemical Survey and Assessment on Land Quality, China Geological Survey, Langfang 065000,China;
3. Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone, Chinese Academy of Geological Sciences, Langfang 065000, China

Received Date: 11 March 2021

Revised Date: 20 March 2023

Publish Date: 11 October 2023

Abstract

Abstract

The heavy metal pollution in cultivated land is a hot and key issue, and the pollution status and mechanisms can be accurately grasped through small-scale ecological risk surveys of heavy metals in soil. In this study, the heavy metal ecological risk survey of cultivated land and major crops was carried out in Yancang and Lushan towns, Weining County, Guizhou Province. Meanwhile, the pollution status and ecological risks of heavy metals in soil were assessed using the geoaccumulation index and the potential ecological risk index proposed by Hakanson. The results are as follows. The compound pollution of heavy metals exists in the soil of the cultivated land, with Cd showing the highest pollution level and ecological risks. Meanwhile, Cd exceeds the standard in some potato and maize samples, which is closely related towater-soluble and exchangeable Cd. Therefore, more attention should be paid to the studies on the pollution and speciation of heavy metals in the monitoring and remediation of soil pollution in cultivated land in the future.
- cultivated land /
- root soil /
- crop /
- heavy metal /
- speciation /
- ecological risk