TY - JOUR
T1 - Growth and metal accumulation in vetiver and two Sesbania species on lead/zinc mine tailings
AU - Yang, B.
AU - Shu, W. S.
AU - Ye, Z. H.
AU - Lan, C. Y.
AU - Wong, M. H.
N1 - Funding Information:
The author would like to thank Ms. Zhou Mi for technical assistant. Financial support from the NSFC (No. 30100024), GDNSF (No. 990259), and the Research Grants Council of University Grants Committee of Hong Kong is gratefully acknowledged.
PY - 2003/9
Y1 - 2003/9
N2 - The lead (Pb)/zinc (Zn) tailings contained high concentrations of heavy metals (total Pb, Zn, Cu and Cd concentrations 4164, 4377, 35 and 32 mg kg -1, respectively), and low contents of major nutrient elements (N, P, and K) and organic matter. A field trial was conducted to compare growth performance, metal accumulation of Vetiver (Vetiveria zizanioides) and two legume species (Sesbania rostrata and Sesbania sesban) grown on the tailings amended with domestic refuse and/or fertilizer. It was revealed that domestic refuse alone and the combination of domestic refuse and artificial fertilizer significantly improved the survival rates and growth of V. zizanioides and two Sesbania species, especially the combination. However, artificial fertilizer alone did not improve both the survival rate and growth performance of the plants grown on tailings. Roots of these species accumulated similar levels of heavy metals, but the shoots of two Sesbania species accumulated higher (3-4 folds) concentrations of Pb, Zn, Cu and Cd than shoots of V. zizanioides. Most of the heavy metals in V. zizanioides were accumulated in roots, and the translocation of metals from roots to shoots was restricted. Intercropping of V. zizanioides and S. rostrata did not show any beneficial effect on individual plant species, in terms of height, biomass, survival rate, and metal accumulation, possibly due to the rather short experimental period of 5 months.
AB - The lead (Pb)/zinc (Zn) tailings contained high concentrations of heavy metals (total Pb, Zn, Cu and Cd concentrations 4164, 4377, 35 and 32 mg kg -1, respectively), and low contents of major nutrient elements (N, P, and K) and organic matter. A field trial was conducted to compare growth performance, metal accumulation of Vetiver (Vetiveria zizanioides) and two legume species (Sesbania rostrata and Sesbania sesban) grown on the tailings amended with domestic refuse and/or fertilizer. It was revealed that domestic refuse alone and the combination of domestic refuse and artificial fertilizer significantly improved the survival rates and growth of V. zizanioides and two Sesbania species, especially the combination. However, artificial fertilizer alone did not improve both the survival rate and growth performance of the plants grown on tailings. Roots of these species accumulated similar levels of heavy metals, but the shoots of two Sesbania species accumulated higher (3-4 folds) concentrations of Pb, Zn, Cu and Cd than shoots of V. zizanioides. Most of the heavy metals in V. zizanioides were accumulated in roots, and the translocation of metals from roots to shoots was restricted. Intercropping of V. zizanioides and S. rostrata did not show any beneficial effect on individual plant species, in terms of height, biomass, survival rate, and metal accumulation, possibly due to the rather short experimental period of 5 months.
KW - Growth performance
KW - Intercropping
KW - Pb/Zn mine
KW - Sesbania rostrata
KW - Sesbania sesban
KW - Tailings amendment
KW - Vetiveria zizanioides
UR - http://www.scopus.com/inward/record.url?scp=0642344662&partnerID=8YFLogxK
U2 - 10.1016/S0045-6535(03)00499-5
DO - 10.1016/S0045-6535(03)00499-5
M3 - Journal article
C2 - 12867192
AN - SCOPUS:0642344662
SN - 0045-6535
VL - 52
SP - 1593
EP - 1600
JO - Chemosphere
JF - Chemosphere
IS - 9
ER -
