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现代地质 ›› 2016, Vol. 30 ›› Issue (6): 1294-1302.

• 地球化学 • 上一篇    下一篇

辽宁盘锦市农田土壤重金属元素时空变化研究

李玉超1,2,余涛1,杨忠芳1,于成广1,2,王诚煜2   

  1. 1中国地质大学(北京)地球科学与资源学院,北京100083;2辽宁省地质矿产调查院,辽宁 沈阳110031
  • 出版日期:2016-12-15 发布日期:2016-12-18
  • 通讯作者: 杨忠芳,女,教授,博士生导师,1961年出生,地球化学专业,主要从事土壤环境地球化学教学与研究工作
  • 作者简介:李玉超,男,工程师,硕士研究生,1987年出生,地球化学专业,主要从事地球化学调查评价和土地质量评估方面的研究工作。Email:282693909@qq.com。
  • 基金资助:
    中国地质调查局项目“全国土壤现状调查及污染防治”(GZTR20080311);中国地质调查局项目“多目标生态农业地球化学调查”(200414200004);中国地质调查局项目“上海市奉贤区多目标地球化学调查”(12120113001800)

Study on Spatialtemporal Variation of Heavy Metal Elements Contents in Soil from the Farming Area in Panjin City,Liaoning

LI Yuchao1,2,YU Tao1,YANG Zhongfang1,YU Chengguang1,2,WANG Chengyu2   

  1. 1School of Earth Sciences and Resources,China University of Geosciences, Beijing100083, China; 2Liaoning Institute of Geological Survey,Shenyang, Liaoning110031, China
  • Online:2016-12-15 Published:2016-12-18

摘要: 摘要:以辽宁盘锦市两期土地质量地球化学调查数据为依据,通过数理统计、多元统计分析、空间分析等方法,消除了采样和分析误差的影响,研究了该区土壤重金属元素时空变化规律,并结合土地利用现状讨论了土壤中重金属元素累积的原因。结果表明,在2004—2009年这段时间内,土壤中重金属元素Cd含量呈现明显增加趋势,净平均累积率达到3128%。造成该元素累积的原因主要为农业活动和人类活动,同时人类活动还造成了局部地区As、Zn等元素的累积;Cu、Hg呈明显的贫化趋势;Pb具有富集和贫化的双重性质,Cr、Ni、pH值在此期间变化不明显。

关键词: 盘锦市, 重金属元素, 累积速率, 时空变化

Abstract: Abstract:Based on twice geochemical survey data about land quality in Panjin City of Liaoning, the characteristics of spatialtemporal variation of heavy metal elements in this area were studied by applying scientific statistical method (ie. mathematical statistics, multivariate statistical analysis, spatial analysis) to eliminate errors in sampling and analyzing, and the reasons for accumulation of heavy metal elements in soil were discussed combining present situation of land use. The results showed that the element contents of cadmium (Cd) in soil have been markedly increased from 2004 to 2009, with an average cumulative rate of 3128%, which mainly contributed by agricultural and human activity. Meanwhile, human activity also caused accumulation of some other heavy metal elements, eg arsenic (As), zinc(Zn). On the contrary, copper (Cu) and mercury (Hg) presented apparent depleted trend. Lead (Pb) showed double characteristics of either enrichment or depletion, while the contents of chromium(Cr) and nickel(Ni) had no significant changes as well as the pH value.

Key words: Panjin City, heavy metal elements, cumulative rate, spatialtemporal variation

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