School of Environmental and Municipal Engineering, Institute of Environmental Ecology, Lanzhou Jiaotong University, Lanzhou, P.R. China.
Int J Phytoremediation. 2012 Feb;14(2):101-13. doi: 10.1080/15226514.2010.525564.
The present investigation reports the results of the Cd accumulated by five Populus at six Cd supply levels (0, 0.5, 2, 6, 25, 60 mg/kg) in soils. For all tested Populus species, Cd accumulated by the leaves, stems, and roots linearly increased with increasing Cd supply levels, the higher concentration Cd treatments significantly promoted the Cd accumulation. P. hopeiensis, and P. tomentosa always performed the stronger ability of Cd accumulation than other three Populus species under different Cd supply treatments, and P. nira var. thevestina and P. leucoides had the poorer accumulation ability. Cd in soil was more intensively absorbed in the leaves and stems for all 5 Populus species, was not retained in roots and was transferred to aboveground plant tissues.
本研究报告了在六种镉供应水平（0、0.5、2、6、25、60mg/kg）下，五种杨树对镉的积累情况。对于所有测试的杨树物种，叶片、茎和根中的镉积累量随镉供应水平的增加呈线性增加，高浓度的镉处理显著促进了镉的积累。在不同的镉供应处理下，河北杨和毛白杨总是比其他三种杨树表现出更强的镉积累能力，而青杨和山杨的积累能力较差。对于所有 5 种杨树，土壤中的镉更集中地被叶片和茎吸收，而根部不保留，被转移到地上植物组织中。
