In order to demonstrate the tolerance of Eriophorum comosum to heavy metals, the samples of E. comosum naturally distributed in the Nandan nonferrous metal mining area in Guangxi and its root soil were collected, and the contents of Cu, Zn, As, Cd, and Pb in the samples were measured by inductively coupled plasma mass spectrometry(ICP-MS). The heavy metal enrichment coefficient of the aboveground and underground parts of E. comosum, and the heavy metal transport coefficient of the aboveground parts of E. comosum were compared and analyzed. The pollution of E. comosum root soil was evaluated. The results showed that the content of five heavy metal elements measured in the root soil of E. comosum was relatively high, with an average content of Cu 333.18 mg/kg, Zn 17 139.20 mg/kg, As 10 338.37 mg/kg, Cd 115.97 mg/kg, and Pb 3 497.25 mg/kg, respectively. The single factor pollution index and Nemero comprehensive pollution index had reached a level of severe pollution or above, with As, Cd, Zn being particularly severe, and Pb and Cu being relatively mild, the order of pollution levels of different heavy metal elements was As>Cd>Zn>Pb>Cu. The average contents of five heavy metal elements measured in the aboveground and underground parts of E. comosum were Cu 16.69 mg/kg, Zn 465.45 mg/kg, As 98.92 mg/kg, Cd 5.03 mg/kg, and Pb 129.49 mg/kg and Cu 38.05 mg/kg, Zn 894.23 mg/kg, As 461.72 mg/kg, Cd 8.27 mg/kg, and Pb 221.72 mg/kg, respectively. The heavy metal enrichment and transport coefficients in the aboveground parts were relatively small, while the heavy metal enrichment coefficients in the underground parts were relatively large. The absorbed heavy metal elements were mainly concentrated in the roots, and the tolerance to the measured heavy metal elements probably belonged to the root accumulation and defense types. Although it was not a hyperaccumulative plant, it had a certain ability to absorb and transport heavy metal elements, and could withstand high concentrations of arsenic, cadmium and other heavy metal complex stress. It had strong vitality, high biomass, and low habitat requirements. Therefore, it could be used as an excellent plant for the remediation of soil severely polluted by heavy metals.
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