南极长城站区土壤重金属含量特征及来源分析

频繁的人类活动对南极生态环境的影响越来越受到关注，在南极长城站周边人类活动密集区对土壤进行采样的基础上，分析长城站周边地区表层土壤中重金属含量特征，并结合近20年来长城站周边土壤中主要重金属含量的分布，展开对比研究，探讨长城站区主要重金属元素的来源。结果表明，8种主要重金属在长城站表层土壤中都有不同程度的富集，站区频繁的车辆活动使得汽车尾气排放及汽车轮胎磨损产生大量含重金属的有害气体和粉尘，这些物质沉降在站区土壤表层或许是南极长城站区土壤重金属富集的重要原因之一。

Heavy Metal Distributions and Its Source of Soils at Great Wall Station,Antarctica

Soil samples around Great Wall Station were sampled to analyse their contents and distribution characteristics.Comparison of soil heavy metal between this result and previous research results in the past 20 years showed that eight different heavy metals had appeared enrichment trend.Through comprehensive analyses,the movement of automobiles including emission,gasoline leakage etc.may be one of the main reasons of metal richment.So more effective management of all the man's activities at Antarctica are necessary.