Study on The Transport and Transformation of Heavy Metal Lead from Agricultural Land in An Abandoned Mining Area in Southwestern Yunnan

Yingmei Li; Xiaoyan Shang; Yu Chen

doi:10.54097/tm7xq350

Authors

Yingmei Li
Xiaoyan Shang
Yu Chen

DOI:

https://doi.org/10.54097/tm7xq350

Keywords:

Abandoned mine site; Agricultural land; Heavy metals; Migration and transformation.

Abstract

In this paper, the heavy metals in the agricultural land around an abandoned mine in southwest Yunnan Province were taken as the object of study, 15 samples of topsoil, middle soil and deep soil were collected, and 5 maize plants were randomly selected in the soil sampling points to study the migration and transformation of heavy metal lead in the soil-maize system in the agricultural land around the abandoned mine. The results showed that the soils in the study area were enriched with heavy metal Pb, which was generally expressed as surface soil > middle soil > deep soil; the migration capacity of heavy metal Pb in different organs of maize: roots > leaves > stems and kernels. The results of the study can be used as a basis for judging the migration and transformation of heavy metals in soil-crop systems, providing new theoretical support for the migration of heavy metals in soils around abandoned mining areas, and promoting the ecological remediation of heavy metal pollution in agricultural land.

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