关键词: 退化红壤, 蚯蚓种群, 密度与生物量, 季节波动, 植被恢复

Abstract: Soil and plant samples were collected from the tailing areas of four stateowed tungsten mines (i.e., Xihuashan, Dangping, Piaotang, and Xialong) in South of Jiangxi Province, and their heavy metal concentrations were analyzed. The results showed that in the tailing areas of the four state tungsten mines, soils were contaminated by Zn, Cd, Mo, Cu, Pb and W, with the concentrations of Cd and Mo being higher than those of the others, and the soil contamination was more serious in the tailing area of Xialong tungsten mine. 53 species belonging to 31 families and 52 genera were found in the four areas, and the enrichment coefficient of the heavy metals in these plants ranked as Zn>Cd>Mo>Cu>Pb>W. Owing to the different tolerant mechanisms, these plants were characterized by different enrichment capability, e.g., Dicranopteris dichotoma, Solanum nigrum, and Rumex acetosa could enrich more heavy metals in their stem and leaf, being feasible to be used for the phytoremediation of heavy metals-contaminated soils, Blechnum orientale, Urena procumbens and Woodwardia prolifera could enrich more heavy metals in their root, being available to be used for phytostabilization, while Setaria viridis, Bidens bipinnata and Perilla frutescens could hardly enrich heavy metals, being possible to be used as the pioneer plants for the revegetation of mining wastelands.

Key words: Degraded red soil, Earthworm population, Density and biomass, Seasonal fluctuation, Vegetation restoration