6Bradshaw A D. Restoration of mined lands - using natural process. Ecol Eng, 1997, 8:255-269.
7Lin C S, Ho P S. China's resources and land- use change:insights from the 1996 land survey. Land Use Policy 2003,20:87- 107.
8Wong M H. Ecological restoration of mine degraded soils, with emphasis on metal contaminated soils [ J ]. Chemosphere,2003, 50: 775 - 780.
9Ye Z H, Shu W S, Zhang Z Q. Evaluation of major constraints to revegetation of lead/zinc mine tailings using bioassay techniques. Chemosphere 2002, 47:1103 - 1111.