Abstract: This paper studied the heavy metals accumulation in Miscanthus sinensis populations which experienced different intensity and duration of pollution in a multiple heavy metal mining area.The results showed that the accumulation of Pb,Cd,Cu and Zn in M.sinensis was in the order of root > leaf > stalk.The average accumulation of Pb and Cd in M.sinensis was significantly correlated with the contents of the two metals in soil (P<0.05),but that of Cu and Zn did not show such a trend because the contents of the two metals in soil were higher than their maximum accumulation in M.sinensis,indicating that the contents of soil Cu and Zn were the main stress factor to M.sinensis.The absorptivity of Pb,Zn and Cu by M.sinensis increased with soil pH,but in the soils with same pH,the absorptivity was affected by the contents of these three metals in soil.As a whole,M.sinensis was a multiple heavy metals-tolerant species,and its tolerance to the four metals was in the order of Cd < Cu < Pb-Zn.

Key words: Vegetable greenhouse, Upland vegetable field, Soil chemical property, Nitrate enrichment