Response of Different Wetland Plants and Planting Strategies to Cadmium Pollution in Mines

Abstract

The mine's ecological environment is severely impacted due to the high concentration of heavy metals in the abandoned mining area. The motivation of this study is to determine the remediation of cadmium pollution in the mining area by the wetland super enrichment plants, so as to determine the enrichment capacity of the super enrichment plants to the heavy metals in the mining area. In this study, Solanum nigrum and Pteris nervosa were used as experimental plants. Soil from mines in Fugu County, Shaanxi province, which had been closed for mining, was used for pot culture in monoculture and intercrop**, as well as examine the associated experimental data. The findings demonstrated that both monoculture and intercrop** wetland hyperaccumulators dramatically raised plant diversity index and decreased cadmium concentrations in soil after 30 days of planting. Intercrop** had the best ability to absorb heavy metals (p < 0.05), and the intercrop** had the most obvious effect on the improvement of plant diversity index (P < 0.05). The discoveries exhibit that wetland hyperaccumulators beneficially affect the environmental reclamation of weighty metal mines, which can fundamentally bring down how much weighty metals in the dirt and increment species variety.