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http://hdl.handle.net/10397/9458
Title: | Comparison of four Sesbania species to remediate Pb/Zn and Cu mine tailings | Authors: | Chan, GYS Ye, ZH Wong, MH |
Keywords: | China Hong Kong Metal mine tailings Phytostablization Pioneer species |
Issue Date: | 2003 | Publisher: | Springer | Source: | Environmental management, 2003, v. 32, no. 2, p. 246-251 How to cite? | Journal: | Environmental management | Abstract: | A 6-month greenhouse pot trial was performed, aimed at screening appropriate Sesbania species for remediation of Pb/Zn and Cu mine tailings. Performances of young seedlings of four Sesbania species (S. cannabina, S. grandiflora, S. rostrata, and S. sesban) were compared with and without inoculation of rhizobia. Seedlings were planted in two types of tailings amended with garden soil or garden soil mixed with river sediment. The results indicated that inoculated plants generally produced a higher biomass than samples without inoculation. Pb/Zn mine tailings containing rather high concentrations of total and water-soluble Cu, Pb, and Zn were toxic to plant growth compared with Cu mine tailings, according to the growth performance of the four species. Sesbania sesban and S. rostrata showed superior growth performance, compared to the other two species. Thus, they can serve as pioneer species to modify the barren environment, by providing organic matter and essential nutrients such as nitrogen, upon decomposition, in a relatively short period of time. This is especially true for S. rostrata, which is an annual plant that forms both stem and root nodules. However, a longer-term field trial should be conducted to investigate if superior species can beneficially modify the habitat for the growth of subsequent plant communities. | URI: | http://hdl.handle.net/10397/9458 | ISSN: | 0364-152X | DOI: | 10.1007/s00267-003-2901-1 |
Appears in Collections: | Journal/Magazine Article |
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