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现代地质 ›› 2020, Vol. 34 ›› Issue (05): 970-978.DOI: 10.19657/j.geoscience.1000-8527.2020.05.10

• 地球化学 • 上一篇    下一篇

海南岛表层及深层土壤重金属分布特征及源解析

张宪依1(), 庞成宝2, 王安婷3, 袁国礼3(), 桑学镇1, 李元仲4, 杨毅5   

  1. 1.山东地矿股份有限公司,山东 济南 250014
    2.山东省鲁南地质工程勘察院,山东 济宁 272100
    3.中国地质大学(北京) 地球科学与资源学院,北京 100083
    4.山东地矿集团有限公司,山东 济南 250014
    5.海南地质调查院,海南 海口 570206
  • 收稿日期:2020-04-03 修回日期:2020-05-27 出版日期:2020-10-28 发布日期:2020-10-29
  • 通讯作者: 袁国礼
  • 作者简介:袁国礼,男,教授,博士生导师,1971年出生,地球化学专业,主要从事环境地球化学与岩石地球化学的研究工作。Email: yuangl@cugb.edu.cn
    张宪依,男,博士,1962年出生,岩石学、矿物学、矿床学专业,主要从事矿床构造与矿业经济研究。Email: zxykj@126.com
  • 基金资助:
    国家自然科学基金项目(41872100);国家自然科学基金项目(41372249);中央高校基本业务费项目(2652018158);中央高校基本业务费项目(2652018160);山东省国土资源厅项目(鲁勘字(2012)36号);中国地质调查局项目“海南岛生态地球化学调查”(200414200010)

Distribution Characteristics and Source Identification of Heavy Metals in Topsoils and Subsoils of Hainan Island

ZHANG Xianyi1(), PANG Chengbao2, WANG Anting3, YUAN Guoli3(), SANG Xuezhen1, LI Yuanzhong4, YANG Yi5   

  1. 1. Shandong Geo-Mineral Co., Ltd, Jinan, Shandong 250014, China
    2. Lunan Geologic Engineering Institute, Jining, Shandong 272100, China
    3. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
    4. Shandong Geological and Mining Group, Jinan, Shandong 250014, China
    5. Hainan Geological Survey Institute,Haikou,Hainan 570206,China
  • Received:2020-04-03 Revised:2020-05-27 Online:2020-10-28 Published:2020-10-29
  • Contact: YUAN Guoli

摘要:

地学统计及多元分析是判断土壤中重金属元素来源和影响因素的有效方法。区域尺度上不同岩性地区表层及深层土壤中重金属元素含量和空间分布的对比分析,也可以为区分重金属元素来源提供有价值的信息。本研究在海南岛共采集了8 713件表层土壤样品和2 197件深层土壤样品,分别测定了其中8种重金属元素和Sc等元素含量。结果表明,表层和深层土壤中As、Co、Cr、Cu、Pb、Zn、Cd、Hg的平均含量分别为5.29 mg/kg、11.95 mg/kg、60.79 mg/kg、17.24 mg/kg、26.18 mg/kg、51.22 mg/kg、0.081 mg/kg、0.043 mg/kg和5.53 mg/kg、12.89 mg/kg、65.24 mg/kg、19.97 mg/kg、29.15 mg/kg、58.87 mg/kg、0.065 mg/kg、0.029 mg/kg。通过Pearson相关性分析和多元成分数据分析,发现影响海南岛表层和深层土壤中重金属元素分布的主要因素为成土母岩的岩性、成土过程以及人类活动。分析结果表明,As、Co、Cr、Cu、Pb、Zn元素主要继承于土壤母质并受成土过程影响,而Cd和Hg元素受到人为活动输入影响较大。

关键词: 重金属元素, 表层土壤, 深层土壤, 地学统计及多元分析, 影响因素, 海南岛

Abstract:

Geo-statistical and multivariate analyses are effective methods to determine the source and impact factors on heavy metals in the soil. The comparative analysis of contents and spatial distribution of heavy metals in topsoils and subsoils of different lithologic regions on a regional scale can also provide valuable information for distinguishing the sources of heavy metals. In our study, concentrations of 8 heavy metals were respectively measured in 8,713 topsoil samples and 2,197 subsoil samples collected from Hainan Island. The mean concentrations of As, Co, Cr, Cu, Pb, Zn, Cd, Hg in topsoils and subsoils were 5.29 mg/kg, 11.95 mg/kg, 60.79 mg/kg, 17.24 mg/kg, 26.18 mg/kg, 51.22 mg/kg, 0.081 mg/kg,0.043 mg/kg and 5.53 mg/kg, 12.89 mg/kg, 65.24 mg/kg, 19.97 mg/kg, 29.15 mg/kg, 58.87 mg/kg, 0.065 mg/kg, 0.029 mg/kg, respectively. The dominant impact factors including lithology of soil parent material, pedogenesis and human activities were figured out for heavy metals both in topsoils and subsoils by using Pearson correlation analysis and multivariate compositional analysis. The result shows that As, Co, Cr, Cu, Pb and Zn mainly come from the inheritance of soil parent material and influence of the pedogenesis, while Cd and Hg are greatly affected by the input of human activities.

Key words: heavy metal, topsoil, subsoil, geo-statistical and multivariate analysis, impact factor, HainanIsland

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