| 三峡水库小江流域消落区土壤重金属的时空分布 |
| Temporal and Spatial Distribution of Soil Heavy Metals in Water-level-fluctuationZone of Xiaojiang Watershed in Three Gorges Reservoir |
| 投稿时间：2010-11-18 修订日期：2010-12-31 |
| DOI： |
| 中文关键词:消落区 土壤重金属 时空分布 小江流域 |
| 英文关键词:water-level-fluctuation zone soil heavy metals temporal and spatial distribution Xiaojiang watershed |
| 基金项目:国家水体污染控制与治理科技重大专项（２００９ＺＸ０７１０４－００３）和农业科技成果转化资金项目“三峡库区小江生态恢复技术研究与示范”（２００９ＧＢ２３３２０４８９）资助。 |
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| 中文摘要: |
| 2009年5月、7月和9月对小江流域消落区5个断面土壤重金属的监测结果表明,Cu、Zn、Pb、Cd、Fe和Mn浓度均值分别为28.41、90.54、16.94、1.46、5.053×104和554.04mg/kg。随海拔高程升高,各重金属浓度均值在高程160m处最小、170m处增加;流域沿程在养鹿段减少,高阳和黄石段增加,在双江段又减少;随时间变化,7月增加、9月减少。Zn和Cu、Fe呈极显著正相关性,Pb和Cd、Fe,Cu和Fe、Pb呈较显著正相关性;pH和Mn呈正相关,与其他5种重金属呈负相关,与Fe的相关性显著,与其他重金属的相关性不显著。Cu、Zn、Pb、Cd和Mn地质累积指数分别为1.40、0.86、0.62、10.03和1.07。按照Mull污染分类等级判别,Zn和Pb无污染,Cu和Mn为中度污染,Cd为重度污染。 |
| 英文摘要: |
| Soil samples were collected from the surface of five sections in the watershed of Xiaojiang River during May，July and September in 2009. The average concentration of Cu，Zn，Cd，Pb，Fe and Mn were 28. 41，90.54，16.94，1.46，5. 053 x 104 and 554. 04 mg/kg. With the increasing of elevation，the average concentrations were the smallest at 160m and increased at 170m. Along Xiaojiang River, the average concentrations of soil heavy metals reduced in Yanglu and Shuangjiang section，increased in Gaoyang and Huangshi sections. With the alternating of seasons，the average concentrations of soil heavy metals increased in July then reduced in September. A markedly positive correlation was found between the concentration of Zn and Cu or Fe，while the correlation between the concentration of Pb and Cd，Pb and Fe，Cu and Fe，Cu and Pb were good positive. The value of pH showed positive correlation to the concentration of Mn and negative to the concentration of other metals especially Fe. The Sediment Index of Cu，Zn，Pb，Cd and Mn were 1 .40，0.86，0. 62，10. 03 and 1.07. According to the Grading of Mull pollution category，the soil was pollution-free by Zn and Pb，moderate polluted by Cu and Mn and heavily polluted by Cd. |
| 杨启红,郑志伟,张志永,安 然,胡红青,胡 莲,万成炎.2011.三峡水库小江流域消落区土壤重金属的时空分布[J].水生态学杂志,32(2):11-16. |
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