| 长江三角洲地区土壤重金属含量及其分异特征 |
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| 引用本文： | 张明,陈国光,刘红樱,梁晓红,杨辉,田福金.长江三角洲地区土壤重金属含量及其分异特征[J].土壤通报,2012(5):1098-1103. |
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| 作者姓名： | 张明 陈国光 刘红樱 梁晓红 杨辉 田福金 |
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| 作者单位： | 中国地质大学(武汉);中国地质调查局南京地质调查中心 |
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| 基金项目： | 国土资源部与国家环保部联合项目“全国土壤污染现状调查及污染防治专项”、长江三角洲地区多目标区域地球化学系列图编制(GZTR20060202)和长江下游流域多目标区域地球化学系列图编制(GZTR20070205)资助 |
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| 摘 要： | 以地学统计、浓度-面积分形方法和富集系数等方法分析了该地区土壤重金属元素含量的变化特征。结果显示:表层和深层土壤的重金属均具有多重分形特征,表层土壤中重金属元素分异性强,在该地区表层重金属含量平均值远远大于全国土壤背景值(除了As);土壤Hg、Cd、Pb含量分布显示了受人为影响强烈,而Cu、Zn主要受原始背景和人为活动综合影响;Cr、Ni、As主要受自然背景影响。研究结果为长江三角洲地区土壤质量评价提供可靠的依据。
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| 关 键 词： | 重金属 土壤 变异性 多重分形 长江三角洲地区 |
Spatial Distribution Characteristics of Heavy Metal in Soils of Yangtze River Delta |
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| ZHANG Ming,CHEN Guo-guang,LIU Hong-ying,LIANG Xiao-hong,YANG Hui,TIAN Fu-jin.Spatial Distribution Characteristics of Heavy Metal in Soils of Yangtze River Delta[J].Chinese Journal of Soil Science,2012(5):1098-1103. |
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| Authors: | ZHANG Ming CHEN Guo-guang LIU Hong-ying LIANG Xiao-hong YANG Hui TIAN Fu-jin |
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| Institution: | 1.China University of Gesciences(Wuhan),Wuhan 430074,Hubei,China;2.Nanjing Center,China Geological Survey,Nanjing 210016,Jiangsu,China) |
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| Abstract: | Spatial distributions of 8 heavy metals(Cd,Cr,Cu,Ni,Hg,Pb,Zn and As)in soil in the Yangtze River Delta,were analyzed by means of the geostatistical analysis,Concentration-Area fractal model and enrichment factor.The results showed that the contents of 8 heavy metals were characterized by multifractality in both top soils(0-20 cm) and deep soils(150-200 cm).Heavy metals in top soils had strongly spatial variability,their average concentrations(except for As) were far higher than soil background values of China.Hg,Cd and Pb showed a strong impact by man-made,Cu and Zn were influenced by original background and effects of human activities.Cr,Ni and As were mainly affected by natural background.The study of the spatial variability of heavy metals provided a reliable basis for soil environment quality assessment in the Yangtze River Delta. |
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| Keywords: | Heavy metal Soil Variability Multifractal Yangtze River Delta |
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