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Int. J. Environ. Res. Public Health 2015, 12(2), 1726-1744; doi:10.3390/ijerph120201726

Growth and Heavy Metal Accumulation of Koelreuteria Paniculata Seedlings and Their Potential for Restoring Manganese Mine Wastelands in Hunan, China

1
National Engineering Laboratory for Applied Technology of Forestry & Ecology in South China, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
2
Faculty of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
*
Author to whom correspondence should be addressed.
Academic Editor: Oladele A. Ogunseitan
Received: 2 December 2014 / Revised: 28 January 2015 / Accepted: 29 January 2015 / Published: 3 February 2015
(This article belongs to the Special Issue Hazardous Waste and Human Health)
View Full-Text   |   Download PDF [2159 KB, uploaded 3 February 2015]   |  

Abstract

The planting of trees on mine wastelands is an effective, long-term technique for phytoremediation of heavy metal-contaminated wastes. In this study, a pot experiment with seedlings of Koelreuteria paniculata under six treatments of local mine wastes was designed to determine the major constraints on tree establishment and to evaluate the feasibility of planting K. paniculata on manganese mine wastelands. Results showed that K. paniculata grew well in mine tailings, and also under a regime of equal amounts of mine tailings and soil provided in adjacent halves of pots. In contrast, mine sludge did not favor survival and growth because its clay texture limited fine root development. The bio-concentration factor and the translocation factor were mostly less than 1, indicating a low phytoextraction potential for K. paniculata. K. paniculata is suited to restore manganese mine sludge by mixing the mine sludge with local mine tailings or soil. View Full-Text
Keywords: Koelreuteria paniculata; lateral fine root development; seedling biomass; phytoremediation; manganese mine wastes Koelreuteria paniculata; lateral fine root development; seedling biomass; phytoremediation; manganese mine wastes
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Huang, Z.; Xiang, W.; Ma, Y.; Lei, P.; Tian, D.; Deng, X.; Yan, W.; Fang, X. Growth and Heavy Metal Accumulation of Koelreuteria Paniculata Seedlings and Their Potential for Restoring Manganese Mine Wastelands in Hunan, China. Int. J. Environ. Res. Public Health 2015, 12, 1726-1744.

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