Abstract:By analysis on various soil element concentration order under different pollution sources in the study area, is is concluded that: the order of heavy metal concentration in the soil profile is dumping pollution>sewage disposal pollution>livestock and poultry stool pollution;water-soluble salts like K+，Mg2+，Na+，Cl，SO24, affected by sewage pollution significantly, the concentration order in the soil is sewage disposal pollution>livestock and poultry stool pollution>dumping pollution. The concentration order of NO3 in the soil is livestock and poultry stool pollution>sewage disposal pollution>dumping pollution; the order of soil constant nutrient concentrations is sewage disposal pollution>dumping pollution>livestock and poultry stool pollution. On the view of elective cultivation, in the land that heavy metal is accumulated, but soil is fertility, the vegetables (or fruits)that accumulate less heavy metal can be planted. On one hand, the advantage of soil fertility can be realized; while on the other hand, it is better avoidance of heavy metal pollution on crops.
