| 三峡水库小江消落区土壤重金属时空分布与来源初步分析 |
| Temporal and Spatial Distribution and sources analysis of Soil Heavy Metals in Water- level- fluctuation Zone of Xiaojiang Watershed in Three Gorges Reservoir |
| 投稿时间：2012-03-15 修订日期：2012-07-19 |
| DOI： |
| 中文关键词:消落区 土壤重金属 时空分布 来源分析 |
| 英文关键词:water-level-fluctuation zone soil heavy metals temporal and spatial distribution sources analysis |
| 基金项目:国家水体污染控制与治理科技重大专项(2009ZX07104-003);国家自然科学基金项目(50979061);国家自然科学青年基金项目(51009100,51009099);中德科技合作项目(2008DFA31550) |
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| 中文摘要: |
| 2010年3-9月对小江流域消落区的5个断面的土壤重金属含量进行监测。结果表明，2010年小江流域消落区土壤Cu、Zn、Pb、Cr、Fe、Mn均值分别为28.90、72.73、23.58、20.70、35.58*103、517.14 mg/kg。土壤综合污染指数为0.73，污染等级处于警戒级。小江消落区土壤重金属含量沿程分布以高阳站点较低，黄石站点较高，且大部分重金属含量随高程升高总体呈现升高的趋势。时间分布上以3、7月各重金属均值含量较高。与2009年相比，2010年消落区土壤重金属Fe、Mn 、Zn含量有所降低，Cu、Pb含量有所增高。利用相关性分析和因子分析对5种重金属的相关性和来源进行解析的结果表明，Fe、Mn与其他重金属相关性显著（P<0.05或P<0.01），而Cu、Pb之间也显著相关（P<0.01）,Cr与Fe、Mn之外的重金属的相关性都较弱，初步推断Fe, Mn, Zn属于“自然因子”类别元素，Cu、Pb属于“污染因子”类别元素。 |
| 英文摘要: |
| Soil samples were collected from the surface of five sections in the water-level-fluctuation zone of Xiaojiang River during Match to September in 2010．The average concentration of Cu, Zn, Cd，Pb，Fe and Mn were 28.90, 72.73, 23.58, 20.70, 35.58*103, 517.14 mg/kg．The integrated pollution index of heavy metals in water-level-fluctuation zone of Xiaojiang River was 0.73, and the pollution grade was on the alarm level. Along the Xiaojiang River，the average concentrations of soil heavy metals reduced in Gaoyang section，increased in Huangshi section. The average concentrations of most heavy metals were increased with the increasing of elevation. With the alternating of seasons，the average concentrations of soil heavy metals were highest in Match and July．Compared with 2009, the average concentration of Fe, Mn, Zn were reduced, and that of Cu, Pb were increased in 2010. Further Correlation Analysis and Factor Analysis on Correlation and sources of heavy metals revealed that Fe, Mn and other heavy metals in soil took on positive correlations(P<0.05 or P<0.01), Cu and Pb were good positive(P<0.01), Cr have poor correlation with other heavy metals except Fe and Mn. We deduced that the contaminations of Fe, Mn, Zn in the watershed of Xiaojiang River were caused by natural factors, and that of Cu and Pb were caused by pollution factors. |
| 邹曦.2012.三峡水库小江消落区土壤重金属时空分布与来源初步分析[J].水生态学杂志,33(4):33-39. |
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