Abstract: We investigated the impacts of application rates of sewage sludge compost (SSC) on the growth and capacity of heavy metal accumulation in Syngonium podophyllum with a pot experiment, with the aim to provide a reference of SSC application in landscape construction. The results showed that the plant height growth and biomass accumulation were significantly increased under proportions of SSC to substrates ≥30%. The maximum accumulation of N, P, K, Cu, Zn, Pb and Cd in S. podophyllum occurred in the treatment of 100% SSC. The application rate of SSC had significant effects on the bioaccumulation factor (BAF) and translocation factor (TF) of heavy metals in S. podophyllum. Accumulation and transfer capacity of S. podophyllum for Cu, Zn, Pb were lower than those for Cd. When the application rate of SSC was ≤30%, the BAF of Cd in both aboveground and belowground parts of S. podophyllum were above 1, suggesting that S. podophyllum would be an ideal candidate for Cd extraction when SSC is used as garden fertilizer. In summary, BAFs for heavy metals in S. podophyllum ranked as Cd > Zn > Cu > Pb, which was consistent with the heavy metal concentrations in the substrate. S. podophyllumshowed good adaptation to SSC and resistance to heavy metals. The application rate of 30% not only promoted the growth of S. podophyllum, but also reduced the risk of heavy metal contamination in soil.

Key words: Cordyceps sinensis, GIS, spatial analysis, ecological suitability.