Taking Camellia oleifera habitat area of Yunfu city as the research area, the method of
distributing random spots, special spots and forest distribution points was adopted. The soil samples were
collected to determine the contents of five heavy metal elements (Zn, Cu, Pb, Cd and Ni) and conduct a pollution
assessment. The results showed that the variation of five heavy metal elements were more than 50%, which were
medium intensity variation. There were significant differences of heavy metals among 5 locations in Yunfu city.
The overall average of the five elements is less than the second level of the soil environmental background value
and the soil environmental quality standard of Guangdong Province. The evaluation of single factor pollution
index showed the highest degree pollution of Cu. The overall Nemerow pollution index of Yunfu city was 0.73,
which was at level 2 of the pollution level, and the pollution level was still clean. Yunan county, Yuncheng district
and Yun'an district, the subordinate of Yunfu city, has a comprehensive soil pollution level of 3 and belongs to the
light pollution. Luoding city belongs to the warning line. Only the pollution in Xinxing county is safe. Therefore,it is necessary to control the pollution of Yunan county, Yuncheng district, Yun'an district and Luoding city by
measures of the combination of physics, chemistry and biology.
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