| 三峡库区小江流域土壤重金属的分布特征与评价分析 |
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| 引用本文： | 裴廷权,王里奥,包亮,钟山,宋珍霞.三峡库区小江流域土壤重金属的分布特征与评价分析[J].土壤通报,2010(1). |
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| 作者姓名： | 裴廷权 王里奥 包亮 钟山 宋珍霞 |
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| 作者单位： | 重庆大学资源及环境科学学院; |
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| 基金项目： | 重庆市发展改革委员会和重庆市科学技术委员会专项基金项目(03-26)资助 |
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| 摘 要： | 通过对小江流域消落带土壤重金属分布特征和评价分析,结果表明,重金属Cr、Cu、Zn、Pb、Cd、Ni含量均值分别为23.76mgkg-1、20.78mgkg-1、82.92mgkg-1、36.84mgkg-1、0.064mgkg-1、38.08mgkg-1,均未超过国家土壤环境质量标准(GB15618-1995),其中Zn、Pb、Ni均高于重庆市土壤背景值。Cr与Cd、Cu与Zn、Cu与Cd,Cu与Ni的相关系数分别为0.9077、0.7969、0.4217、0.4347,呈正相关性。但其他元素间相关性不显著。Ni是本区表层土壤重金属污染的主要因子,重金属元素的污染程度依次为Ni>Zn>Cu>Cd>Pb>Cr。土壤重金属单项污染指数均值小于0.7,综合污染指数为0.47,总体上,污染水平为清洁,土壤重金属潜在生态风险为轻度生态危害。不同功能区潜在生态危害程度上以三中最大,其次为中原和铺溪,产生潜在生态危害的主要重金属是Cd、Pb,Cu、Cr次之。
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| 关 键 词： | 土壤重金属 分布特征 潜在生态风险评价 小江流域 |
Distribution Characteristics and Evaluation of Soil Heavy Metals in Water-level-fluctuating Zone in Xiaojiang River |
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| PEI Ting-quan,WANG Li-ao,BAO Liang,ZHONG Shan,SONG Zhen-xia.Distribution Characteristics and Evaluation of Soil Heavy Metals in Water-level-fluctuating Zone in Xiaojiang River[J].Chinese Journal of Soil Science,2010(1). |
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| Authors: | PEI Ting-quan WANG Li-ao BAO Liang ZHONG Shan SONG Zhen-xia |
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| Institution: | PEI Ting-quan,WANG Li-ao,BAO Liang,ZHONG Shan,SONG Zhen-xia (College of Resources , Environmental Science,Chongqing University,Chongqing 400030,China.) |
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| Abstract: | Distribution characteristics of soil heavy me tals in water-level-fluctuating zone in Xiaojiang River were investigated and analyzed.The results showed that contents of the heavy metals were 23.76 mg kg-1,20.78 mg kg-1,82.92 mg kg-1,36.84 mg kg-1,0.064 mg kg-1 and 38.08 mg kg-1,respectively.The results of statistical analysis indicated that concentrations of the heavy metals detected in the studied soils did not exceed the National Standard for Soil Environment Quality (GB15618-1995).Zn,Pb,Ni were higher th... |
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| Keywords: | Soil heavy metal Distribution characteristics Potential ecological risk assessment Xiaojiang River |
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