Urban Heavy Metal-Polluted Soil Source and its Economic Loss Prediction: A Case Study on Changchun City in China

摘要

Soil is an important component of the urban ecosystem environment and is polluted by all kinds ofsubstances, such as heavy metals and organic matters from industrial production, daily life, andchemical fertilizers and pesticides. In this study, economic loss caused by soil heavy metal pollutionwas analysed using Changchun City in China as an example. First, the contents of four soil heavymetals (Cd, As, Cr, and Cu) and their variation trends in Changchun Automobile Economic andTechnological Development Zone were explored. Then, the pollution loss rate mode was utilized topredict heavy metal pollution loss rate. Results show that the pollution loss rates of the four heavymetals are sorted as Cr, As, Cu and Cd in descending order and range from 1.12% to 1.41% with nomajor overall differences. A heavy metal pollution loss rate of 5.18% is classified as Grade II in pollutiongrading, which corresponds to a slightly clean level, but with a large economic loss of nearly USD9,564,800. The study provides important references for further analysis of urban soil heavy metalsources, quantitative estimation of economic loss caused by soil heavy metal pollution, andimplementation of evaluation work on soil environmental quality.