落叶松对重金属元素吸附能力的研究

摘要

For the present situation of heavy metal elements in soil in the Songhua River basin,the adsorption capacity and adsorption of heavy metals in soil were studied. The results showed that the adsorption capacity of Zn was the strongest. Followed by Cu and Pb,the weakest is Cr and Ni. On the level of organs,the content of bark was the highest,followed by the root,and lowest in xylem. Experiments can be used to demonstrate the use of Larch in the soil contaminated with Zn.%针对松花江流域土壤中重金属元素含量较高的现状，以落叶松为对象，研究其对于土壤中重金属的吸附能力以及吸附规律。研究结果表明，落叶松对于 Zn 的吸附能力最强，其次为 Cu和 Pb，吸附最弱的为 Cr 与 Ni；在器官水平上看，树皮中的含量最高，根部的其次，木质部的最低。实验证明可以利用落叶松对 Zn 污染严重的土壤进行生物修复。