Environmental quality evaluation method for petroleum-heavy metal-salination ternary combined polluted soil

The invention relates to an environmental quality evaluation method for petroleum-heavy metal-salination ternary combined polluted soil. The method comprises the following steps of 1, determining an environmental quality evaluation factor; 2, determining a Nemerow pollution index of the environmental quality evaluation factor; 3, determining an environmental quality IPI (integrated pollution index) value of the petroleum-heavy metal-salination ternary combined polluted soil; 4, dividing the environmental quality level of the soil. According to the method, the shortcoming that the characteristics of pollutants cannot be highlighted during soil environmental quality evaluation by using the conventional evaluation method, and the conventional evaluation method is mostly applied to the environmental quality evaluation of unitary pollutant polluted soil is overcome, an effective way for the environmental quality evaluation of the petroleum-heavy metal-salination ternary combined polluted soil is provided, the poll