Ecological Risk Evaluation and Source Identification of Purple Soil in an Intensive Agricultural Area in Southwest China Based on Pb Stable Isotopes

DOI

10.2991/978-94-6463-606-2_17How to use a DOI?

Keywords

Intensive planting; Purple soil; Lead stable isotope; Source identification

Abstract

Purple soil is a crucial resource for agricultural development in Southwest China. Using the national background values for purple soil, coupled with the potential ecological risk index and IsoSource software, the potential ecological risks and Pb stable isotope characteristics of eight heavy metals (Hg, Cd, As, Pb, Cu, Ni, Cr, and Zn) were analyzed in purple soil samples, parent material, organic fertilizer, and fish pond sediment from an intensive agricultural area in eastern part of Sichuan Province, China. The results showed that the average concentrations of Hg, Cd, As, Pb, Cu, Ni, Cr, and Zn in the soil were 0.062 mg/kg, 0.26 mg/kg, 10.02 mg/kg, 25.85 mg/kg, 30.17 mg/kg, 36.88 mg/kg, 75.84 mg/kg, and 91.69 mg/kg, respectively, all exceeding the national background values for purple soil in China. The potential ecological risks associated with Cd and Hg was classified as slight to moderate. Pb isotope indicated that the contribution of heavy metals from parent material and rock ranged from 33.3% to 48.8%, while agricultural activities accounted for 51.2% to 66.7%. These findings provide a solid foundation for developing strategies to control heavy metal pollution in the intensive agricultural production of purple soil.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Kun Zhang
AU  - Wenbin Chen
AU  - Yuxiang Shao
AU  - Buqing Yan
AU  - Jian Li
AU  - Yunshan Zhang
AU  - Jian Cheng
PY  - 2024
DA  - 2024/12/24
TI  - Ecological Risk Evaluation and Source Identification of Purple Soil in an Intensive Agricultural Area in Southwest China Based on Pb Stable Isotopes
BT  - Proceedings of the 2024 6th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2024)
PB  - Atlantis Press
SP  - 145
EP  - 153
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-606-2_17
DO  - 10.2991/978-94-6463-606-2_17
ID  - Zhang2024
ER  -