Abstract:

In this paper, the total content of heavy metals (As、Pb、Zn、Ni、Cr、Cd) in the vegetable soil of the east surburb of Harbin was investigated and determined. The paper introduced Nemerow integrated index and Fuzzy mathematics comprehensive evaluation method to evaluate the soils. The results showed that single factor pollution index was less than 1 ,which indicated the soils were not polluted by heavy metals；the integrated pollution index was 0.505 , which indicated that pollution degree was safe, pollution level was clean；the fuzzy mathematical comprehensive evaluation result also indicated that the pollution grade was safe.