Evaluation on Polluted Degree by Heavy Metal in Soils with fuzzy Approach Degree Evaluation Method

The basic procedure in regional soil environment quality evaluation based on fuzzy nearness was analyzed.Taking Guizhou Zunyi as an example,the application of fuzzy nearness in soil environment evaluation was discussed.It is shown that the theory of regional soil environment quality evaluation based on fuzzy nearness is easy to be understand and the computation method is simple.This method can make the extent of soil environment pollution more clear.So it is a practical and accurate evaluation method.