期刊
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
卷 12, 期 2, 页码 1726-1744出版社
MDPI
DOI: 10.3390/ijerph120201726
关键词
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资金
- program of Phytoremediation technology for forest vegetation restoration of hilly red soil heavy metals pollution area in Xiangjiang watershed [2012-61]
- Hunan Provincial Department of Science and Technology [05SK3060, 05JT1080]
- New Century Excellent Talents program [NCET-06-715]
- Programs of Hunan Provincial Key Laboratory of Urban Forest Ecology
- Program of Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
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.
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