Accumulation of Heavy Metals by Wetland Plants with Different Root Systems in a Karst Mountainous Area

• DOI: 10.4028/www.scientific.net/amr.788.460
• Publication Date: 2013-09-04T12:35:48Z
• Authors: Yi Wang; Xian Fei Huang; Ji Wei Hu; Kang Ning Xiong; Su Ming Duan
• Keywords: Hydrilla; Root system; Taproot; Potamogeton

20 kinds of wetland plant samples and their rhizosphere sediment were collected from Caohai in Guizhou Province to investigate the accumulation characteristics heavy metals including Cu, Zn, Mn, As Hg by these plants with different root systems a Karst mountain area. The results showed that coefficients taproot is 1.66, 1.50, 1.52, 1.64, 1.56 times those fibrous respectively. Potamogeton lucens highest capacity Zn Mn among average 6.42, 2.93 1.34, Hydrilla verticillata presented high an coefficient 3.27. None met criterion for super-accumulation plants. also indicated was associated depth penetrating into sediment.