污染程度较上述评估较重是因为考虑最大值后提升了污染等级，说明极值对环境

The degree of pollution is more serious because of the above assessment improved after taking into account the maximum level of contamination on the impact on the environment of extreme value will be ignored if only the mean value is considered in the assessment and treatment of heavy metals in soil, thus underestimated the extent of environmental pollution, it is in the process of governance need to be considered within the scope of the extreme value added.

污染程度较上述评估较重是因为考虑最大值后提升了污染等级，说明极值对环境的影响会被忽略如果仅均值在评估及治理土壤重金属时被考虑，从而环境污染程度被低估，故在治理过程中需将极值 加入考虑范围之内．

The reason why the pollution degree is more serious than the above assessment is that the maximum value is considered to improve the pollution level, which means that the impact of extreme value on the environment will be ignored. If only the average value is considered in the assessment and treatment of soil heavy metals, the environmental pollution degree will be underestimated, so the extreme value should be included in the treatment process<br>