Enzyme activities in soils contaminated by abandoned copper tailings Effects of heavy metals on microbial biomass and activity in subtropical paddy soil contaminated by acid mine drainage Role of a buscular mycorrhizae in phytoremediation of heavy metal-contaminated soils Progress in Bioremediation Technology of the Polluted Soil Ecological differentiation and variety degeneration of maize under heavy metal contamination The Remediation Potential of Pennisetum sp On Cu、Cd Contaminated Soil Assessment of vegetable safety and heavy metal contamination risk in decomposed rape straw and coal gangue soilless culture substrate Phytoremediation for heavy metal contamination in soil, metal hyperaccumulator and their genetic engineering Characteristics of absorption and accumulation of heavy metals for three dominant plants in Pb-Zn mine tailings eastern Guangdong