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Comparison of Assessment Methods of Heavy Metal Pollution in Soil

XU Yan et al(College of Resource and Environment,Northeast Agricultural University,Haerbin,Heilongjiang 150030)  
Several representative assessment methods about heavy metal pollution were summarized.The advantages,disadvantage and application range of those methods were analyzed.Application of GIS in assessment of heavy metal pollution in soil was discussed.Finally,the mehods for conquering the disadvantages and limitations of evaluation methods were put forward,which were the combination of potential ecological risk index and pollution load index and the combination assessment method of heavy metal pollution and ArcGIS software.
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