生态与农村环境学报 ›› 2015, Vol. 31 ›› Issue (1): 112-117.doi: 10.11934/j.issn.1673-4831.2015.01.017

• 污染控制与修复 • 上一篇    下一篇

青岛城区土壤重金属元素空间分布及其现状评价

李姗姗,曹广超,石平超,蒋刚,袁杰   

  1. 青海师范大学生命与地理科学学院
  • 收稿日期:2014-05-08 修回日期:2014-10-20 出版日期:2015-01-25 发布日期:2015-04-15
  • 通讯作者: 曹广超 青海师范大学生命与地理科学学院 E-mail:caoguangchao@qhnu.edu.cn
  • 作者简介:李姗姗(1988—),女,河南中牟人,硕士生,主要从事遥感与地理信息系统应用研究。E-mail:lishan0528@126.com
  • 基金资助:

    青海省重点实验室平台建设项目(2013-Z-Y12)

Status Quo and Evaluation of the Spatial Distribution of Heavy Metals in Urban Soil of Qingdao City

LI  Shan-Shan, CAO  Guang-Chao, SHI  Ping-Chao, JIANG  Gang, YUAN  Jie   

  1. College of Life and Geographical Science,Qinghai Normal University
  • Received:2014-05-08 Revised:2014-10-20 Online:2015-01-25 Published:2015-04-15
  • Contact: CAO Guang-Chao College of Life and Geographical Science,Qinghai Normal University E-mail:caoguangchao@qhnu.edu.cn

摘要: 采用普通克里金插值法对青岛城区表层土壤中As、Cd 等8 种重金属元素的空间分布规律进行分析,并用单因子指数法和内梅罗指数法评价土壤重金属元素的累积程度。结果表明:8 种重金属元素空间变异各向异性显著,总体上呈现由东北向西南递减的趋势。受重金属影响而明显累积的土壤样点比例较小,为4.7%,土壤环境质量总体上较好。部分位于交通区、工业区和生活区样点的Zn、Hg、Cd、Cr、Cu 元素含量超过GB 15618—1995《土壤环境质量标准》三级标准。研究成果可为城市环境规划与管理、城市土壤环境治理与修复等提供参考。

关键词: 土壤重金属, 普通克里金法, 内梅罗指数, 空间分布

Abstract: Spatial distributions of eight heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) in the top soil in Qingdao city were analyzed by means of the Ordinary Kriging, and accumulation of the heavy metals in the soil assessed with the Single Factor Index and Nemerow Index methods. Results show that the eight heavy metals are significantly anisotropic in spatial variability, on the whole, displaying a decreasing trend from the northeast to southwest. The proportion of the soil samples showing obvious accumulation as affected by heavy metals contamination is quite low, being 4.7%, and the soil environment quality in general is good. The contents of Zn, Hg, Cd, Cr and Cu in some soil samples around traffic hubs and in the industrial zones and living quarters are over Grade III criteria of the National Standard for Soil Environment Quality. The findings of the study may serve as reference for decision making in urban environmental planning and management, and urban soil remediation .

Key words: soil heavy metals, ordinary Kriging method, Nemerow index, spatial distribution

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