[1]刘二雄,耿荣,耿增超*. 汉城湖绿化区土壤重金属污染评价[J].西北林学院学报,2016,31(4):284-290.[doi:doi:10.3969/j.issn.1001-7461.2016.04.48]
　LIU Er-xiong,GENG Rong,GENG Zeng-chao*. Pollution Assessment on Soil Heavy Metals in Green Belts of Lake Hancheng[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2016,31(4):284-290.[doi:doi:10.3969/j.issn.1001-7461.2016.04.48]
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 汉城湖绿化区土壤重金属污染评价()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第31卷
期数:
2016年第4期
页码:
284-290
栏目:
出版日期:
2016-07-31

文章信息/Info

Title:
 Pollution Assessment on Soil Heavy Metals in Green Belts of Lake Hancheng
文章编号:
1001-7461(2016)04-0284-07
作者:
 刘二雄; 耿荣; 耿增超*
 （西北农林科技大学 资源环境学院，农业部 西北植物营养与农业环境重点实验室，陕西 杨陵 712100）
Author(s):
 LIU Er-xiong; GENG Rong; GENG Zeng-chao*
 (College of Resources and Environment,Northwest A&F University/Key Laboratory for Plant Nutrient and Agricultural Environment in Northwest China,Ministry of Agriculture,Yangling,Shaanxi 712100,China)
关键词:
土壤重金属; 汉城湖绿化区; 污染评价; 单因子污染指数; 内梅罗综合污染指数; 潜在生态危害指数; 相关分析; 主成分分析
Keywords:
soil heavy metal;  Lake Hancheng green belt;  pollution assessment;  single factor pollution index;  Nemerow synthetical pollution index;  potential ecological hazard index;  correlation analysis;  principal component analysis
分类号:
S731.1
DOI:
doi:10.3969/j.issn.1001-7461.2016.04.48
文献标志码:
A
摘要:
 通过野外调查及室内分析方法测定汉城湖12个绿化功能区土壤中的重金属As、Hg、Cr、Cd和Pb含量，利用单因子污染指数法、内梅罗综合污染指数法和潜在生态危害指数法，结合陕西省土壤背景值及《国家土壤环境质量标准》（GB15618-1995）二级标准，进行土壤重金属污染评价，并利用相关分析和主成分分析多元统计方法解析了重金属元素的来源。结果表明：1）绿化区土壤As、Hg、Cr、Cd和Pb平均含量分别是50.32、0.62、28.23、1.31 mg·kg-1和26.75 mg·kg-1，其中Hg、Cd、As和Pb含量>陕西省土壤元素背景值，As和Cd含量超出国家二级土壤环境质量标准允许量；2）以陕西省土壤背景值为评价标准，汉城湖绿化区土壤单因子污染指数污染程度依次为：Hg >Cd > As > Pb >Cr，其中As、Hg、Cd为重度污染，Pb为轻度污染，内梅罗综合污染指数和潜在生态危害指数分别属于重污染等级和极强生态风险；3）以《国家土壤环境质量标准》二级标准为评价标准，单因子污染指数污染程度大小为：As >Cd >Hg >Cr >Pb，其中As和Cd为轻度污染，Cr、Hg和Pb为清洁；从12个功能区的内梅罗综合污染指数来看，1号桥区域污染程度是中污染，其他功能区均为轻污染，总体污染程度为轻污染；除榆园区域和5号桥区域的潜在生态危害指数属于轻微生态风险，其他功能区均属于中等生态风险，总体为中等生态风险；4）As是自然来源，Hg是人为来源，Cr、Cd和Pb是自然和人为来源。
Abstract:
 Based on the soil samples collected from 12 functional regions in green belts Lake Hancheng,field investigation and laboratory analysis of soil heavy metals (As,Hg,Cr,Cd and Pb) were conducted,and the status of heavy metals in the soils were evaluated comparing with Shaanxi Soil Element Background Values (SSEBV) and the grade Ⅱstandard values for soil environmental quality (GB15618-1995) combined the single factor pollution index,the Nemerow synthetical pollution index and the potential ecological hazard index,The sources of heavy metals were identified with correlation analysis and principal component analysis.The results showed that,1) the mean concentrations of As,Hg,Cr,Cd,and Pb were 50.32,0.62,28.23,1.31 and 26.75 mg·kg-1,respectively,in which the contents of Hg,Cd,As,and Pb were higher than those of SSEBV and As and Cd were higher than the grade Ⅱstandard values for soil environmental quality.2) Based on SSEBV,the single factor index was in the order of Hg>Cd>As>Pb>Cr in green belts of Lake Hancheng,and As,Hg,and Cd were in heavy pollution,while Pb was in light pollution level; in general,the soil heavy metal belonged to heavy pollution level and had an extremely strong ecological risk.3) Based on the grade Ⅱstandard values for soil environmental quality,the single factor index was in the order of As>Cd>Hg>Cr>Pb in green belts of Lake Hancheng,and As and Cd were of light pollution,while Cr,Hg,and Pb were at the clean level.The Nemerow synthetical pollution index in No.1 bridge area belonged to medium pollution,while others had light pollution; in general,the soil heavy metal in green belts of Lake Hancheng belonged to light pollution.The potential ecological risk index of Elm park area and No.5 bridge area reached a slight ecological risk,while others had moderate level; in general,the potential ecological risk index belonged to a moderate ecological risk in Green Belts of Lake Hancheng.4) As in green belts of Lake Hancheng originated from natural source,Hg mainly originated from human activities,and Cr,Cd,and Pb mainly originated from natural source and human activities.

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备注/Memo

备注/Memo:
 收稿日期：2015-07-27修回日期：2015-08-28
基金项目：陕西省攻关项目（2010K02-12-1）。
作者简介：刘二雄，男，在职硕士，研究方向：土壤重金属污染评价。E-mail:starlovejj86@126.com
*通信作者：耿增超，男，教授，博士生导师，研究方向：森林土壤及农业废弃物转化。E-mail:gengzengchao@126.com
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