Abstract
Based on two different methods, the ecological risk of heavy metals in soils of Beijing was assessed. With the assess method of PaPant ecological risk index, the Rapant ecological risk index of center region is 1.365, which indicates a medium ecological risk, while the other districts of Beijing are in low ecological risk level and the main influential factor is Hg. Based on the assess result by the method of Hakanson potential ecological risk index, The highest value of RI is 141.95, which is still in the low ecological risk level but also close to the lower limit of medium level; the main influential factors is Hg and Cd. Therefore, to focus on the monitoring and management of Cd and Hg in center region is necessary in Beijing.
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