Abstract: Topsoil samples taken from the Biluochun tea plantations in Xishan of Tai Lake were analyzed for contents and distribution of heavy metals(Cd,Hg,As,Pb,Cr and Cu) in the soil.Effects of geomorphological characters,such as slope and land use,on the distribution of soil heavy metals were also discussed.Soil quality was evaluated by the standard(NY 5199-2002) for soil environmental quality of organic tea plantations and the Criteria of Grade II of the National Standards for Soil Environmental Quality(GB 15618-1995).It was found that all the heavy metals in the soil,except Hg,were in compliance with the standards in concentration,and that their integrated pollution index was 0.78,suggesting that the soil is still clean and of the Alert Grade in pollution,and that its major pollutant is Hg.

Key words: Biluochun, soil, heavy metal, pollution, tea plantation