Study on the Accumulation Property of Zn in Different Artemisia Plants

In order to provide reference for the establishment of artificial wetland ecosystem repairing the plant species of heavy metal contaminated soil,six kinds of Artemisia plants was chosen as subject investigated around the golden mineral at Tongguan county,including Artemisia divaricata,Artemisia annua L.,Artemisia selengensis,Artemisia capillaries,Artemisia anethoides and Artemisia argyi,to determine the content of heavy metal Zn in different artemisia plants.The results were as following: the absorbing capacity for the same plant increased with the increasing of Zn content.Among six kinds of plants in nine different places,the Artemisia anethoides Mattf.had the best absorbing capacity to Zn,the concentration coefficients was 2.44 and transfer coefficients was 1.97,and Zn was mostly stored in plant leaves.The concentration coefficients and transfer coefficients of Artemisia divaricata and Artemisia annua were all greater than 1.The concentration coefficient of Artemisia argyi was 0.35 and Artemisia capillaries was 0.34 and they had the weaker absorbing capacity to Zn than others.So to establish the artificial eco-system,the Artemisia anethoides was the first choice to enrich the heavy metal Zn,and then was the Artemisia divaricata and the Artemisia annua.