Phytoaccumulation of Cadmium from soil by Populus
Soil contamination with Cd is of concern in many countries throughout the world. Extraction of metals from contaminated soils using high-biomass, metal accumulating Populus has been proposed as a low cost, gentle remediation strategy. In a pot experiment, the phytoaccumulation potential for Cd of 3 poplar species (Populus cathayana, P. prezwaskii, P. yunnanensis) were evaluated on three moderately contaminated soils. Large concentrations of Cd (92 mg kg -1) were determined in leaves of P. cathayana grown on a soil containing 14.2 mg kg -1 Cd, resulting in bioaccumulation factors of 27. Total removal of up to 20% Cd after one vegetation period were shown for P. cathayana closely followed by P. yunnanensis and P. prezwaskii. While total Cd concentrations in soils were reduced by up to 20%, 1 M NH4NO3-extractable metal concentrations did not significantly decrease within one vegetation period.
Ke Chen Qi Jiang
School of Life Science and Engineering Southwest University of Science and Technology Mianyang, Sich Panzhihua of Sichuan Provincial Academy of Agroforestry Sciences, Panzhihua 617061, China shuiyue_20
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）