公路路侧土壤环境铅污染评价体系的初步研究和实例分析

On the Assessment System of Lead Pollution in Roadside Soil and its Application

本文通过５年来完成的公路环境影响评价项目所涉及的土壤铅污染的研究，（１）指出现有公路路侧土壤铅污染轻微，范围限于５０米内，且含铅量分布无明显规律；（２）修正了控制标准、评价指标和污染级别；（３）提出预测铅的累积含量和土壤静容量、动容量指标，并给出计算式，初步建立了适于路侧土壤的环境评价体系；（４）进行了某拟建公路铅污染预测的实例研究。

As the results of the highway environmental impact assessment study of Pbpollution in soil in the past 5 years,(1)it is pointed out that the Pb pollution in the soil alongthe exsting highway sides is not serious and is confined within 50 meters of the road with irregular distribution of Pb contents;(2)the controlling standard,assessment indices and pollution degrees are revised;(3)the indices of accumulative Pb content as well as those of static and dynamic capacities in soil are put forward and the models of culculating the capacitiesare given to form an assessment system of soil along the highway sides:(4)a prediction ofsoil Pb content of a planned highway is carried out as an example.