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当前位置: 首页 > 文章 > 城市边缘带土壤重金属空间变异及其污染评价 土壤学报 2006,43 (1) 39-45
Position: Home > Articles > SPATIAL ANALYSIS AND POLLUTION ASSESSMENT OF SOIL HEAVY METALS IN THE STEEL INDUSTRY AREAS OF NANJING PERIURBAN ZONE Acta Pedologica Sinica 2006,43 (1) 39-45

城市边缘带土壤重金属空间变异及其污染评价

作  者：
郑海龙;陈杰;邓文靖;檀满枝;张学雷
单  位：
中山大学环境科学与工程学院;土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)
关键词：
钢铁工业;土壤重金属;空间分布;评价
摘  要：
为揭示城市边缘带强烈人为活动对土壤环境质量的影响,本研究以上海梅山钢铁集团附近14 km2区域为研究区,网格化精确布点,采集表层土壤样品计93个并对其重金属Cu、Zn、Pb、Cr、Cd、Hg、As含量进行了测定分析。结果表明,研究区表层土壤中除Hg和Cd外的其他5种重金属含量均未超过国家二级标准,其中有些土壤中重金属含量接近或略高于南京市土壤环境背景值,但与研究区表层土壤元素地球化学背景值平均水平及空间变异特征基本相符;研究区表层土壤中Hg污染严重,61.3%的样点土壤Hg含量超过国家二级标准。另外,本研究应用地统计学普通克里格插值方法,对研究区内表层土壤污染的空间变异特征进行了分析,并讨论了土壤污染重点空间区域潜在污染源及其污染途径。
译  名：
SPATIAL ANALYSIS AND POLLUTION ASSESSMENT OF SOIL HEAVY METALS IN THE STEEL INDUSTRY AREAS OF NANJING PERIURBAN ZONE
作  者：
Zheng Hailong~1 Chen Jie~(1) Deng Wenjing~2 Tan Manzhi~1 Zhang Xuelei~1(1 State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China)(2 School of Environmental Sciences & Engineering Zhongshan University,Guangzhou 510275,China)
关键词：
Steel industry;Soil heavy metals;Spatial variation;Assessment
摘  要：
To investigate influences of intensive human activities on soil environment dynamics in the peri-urban zone,the study was conducted in an area of 14km~2 in the vicinity of the Meishan Steel Industrial Corp.area.Totally 93 samples of topsoils were collected according to an aerophoto-based gridding design and concentrations of heavy metals Cu,Zn,Pb,Cr,Cd,Hg and As in the soil samples were determined.First of all,statistical analysis of the test results indicated that concentrations of the(heavy) metals in the studied soils did not exceed the safety values of the national soil quality criteria with the exception of Hg and Cd.Although the concentrations of a few metals in the some sampling sites slightly exceeded their average background values,the spatial variations of the concentrations of those metals,however,paralleled the pedo-geochemistry of the study area.Hg(concentrations) in 61.3% of the soil samples were higher than the environmental safety criteria of the national soil quality(standard,) suggesting that Hg might be considered as a dominant element causing soil heavy metal pollution in the study area.(Furthermore,) the spatial variability of soil pollution in terms of heavy metals was investigated by combining pollution evaluation (with) geostatistical methods,and potential sources and possible entrance paths of heavy metal pollutants in those plots with(measurable) pollution were discussed.

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