华东师范大学学报(自然科学版) ›› 2015, Vol. 2015 ›› Issue (3): 136-145.doi: 10.3969/j.issn.1000-5641.2015.03.016

• 地理学 • 上一篇    下一篇

基于综合主成分模型的城市土壤重金属空间分布与传播特征研究

蒋诗泉1,2,刘中侠1,蒋诗平3   

  1. 1. 铜陵学院 数学与计算机科学学院,安徽 铜陵244000;
    2. 南京航空航天大学 经济与管理学院,南京210016;
    3. 中国科学技术大学 国家同步辐射实验室,合肥230029
  • 收稿日期:2014-03-01 出版日期:2015-05-25 发布日期:2015-05-28
  • 通讯作者: 蒋诗泉,男,副教授,博士,主要从事灰色系统理论、复杂系统建模和化学计量学等方面的研究工作. E-mail:jshq6699@163.com
  • 作者简介:蒋诗泉,男,副教授,博士,主要从事灰色系统理论、复杂系统建模和化学计量学等方面的研究工作. E-mail: jshq6699@163.com
  • 基金资助:

    安徽省高校自然科学基金(KJ2012Z409);安徽省自然科学基金(11040606M04 )

Study of spatial distribution and spread of heavy metals in urban soil based on synthetic PCA model

JIANG Shi-quan 1,2,LIU Zhong-xia1,JIANG Shi-ping3   

  • Received:2014-03-01 Online:2015-05-25 Published:2015-05-28

摘要: 对某城市的5个不同功能区进行土壤采样,并对每个采样点的土壤应用X射线荧光光谱仪测试其8种重金属的含量.利用主成分分析法探明每个功能区受污染的主要重金属的类别以及每个功能区的8种重金属对污染的贡献率.根据输出综合主成分模型系数,构建各功能区各重金属元素的浓度随空间分布函数及其传播特征方程.该方法能够探源重金属污染的原因和掌握重金属污染的空间分布和传播特征,因此能为治理污染找到目标和对策.

关键词: X射线荧光分析技术, 主成分分析法, 重金属污染

Abstract: In this paper, soil samples were collected from five different functional areas of a city, and concentrations of eight heavy metals contained in each soil sampling were tested by X ray fluorescence spectrometer. PCA was applied to investigate categories of main heavy metals in contaminated areas and determine the respective contribution of eight heavy metals to contamination in each functional area. Based on output coefficients of the PCA model, the functional relationship between the concentration of each heavy metal and its spatial distribution in each functional area is established and an equation that describes spreading features of heavy metals is constructed. Targets for pollution control and countermeasures can thus be found.

Key words: Xray fluorescence analysis, principal component analysis, heavy metal pollution

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