Spatial Characteristics and Potential Ecological Risk Factors of Heavy Metals in Cultivated Land in the Transition Zone of a Mountain Plain

• Published in: Huanjing kexue Vol. 43; no. 2; p. 946
• Main Authors: Zhang, Ding, Huang, Rong, Gao, Xue-Song
• Format: Journal Article
• Language: Chinese
• Published: China 08.02.2022
• Subjects: China; Environmental Monitoring; Metals, Heavy - analysis; Risk Assessment; Risk Factors; Soil; Soil Pollutants - analysis; China; influencing factors; cultivated soil; heavy metals; mountain plain transition zone; potential ecological risk; spatial distribution
• ISSN: 0250-3301
• DOI: 10.13227/j.hjkx.202105139

The purpose of this study was to explore the spatial distribution characteristics and potential ecological risk factors of heavy metal pollution in cultivated soil in the transitional zone of a typical mountain plain. In this study, a county in Sichuan Province, which has the typical transitional topography of the Chengdu Plain-Longmen Mountain transition zone, was taken as the study area. Geostatistics and potential ecological risk index methods were used to analyze the spatial distribution of Cd, Cr, Cu, Pb, and Zn from cultivated land in the study area, and a potential ecological risk assessment was carried out. This was combined with geographical detector analysis to further explore the main influencing factors leading to the spatial difference in potential ecological risk. The results showed that:① The average values of (Cd), (Cr), (Cu), (Pb), and (Zn) of cultivated land in the study area were 0.39, 123.00, 31.28, 51.04, and 119.66 mg·kg , respectively, which were more than 2.60, 1.59, 1.19, 2.00, and 1.