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| 乌梁素海表层水中重金属元素的空间分布及生态风险评估 |
| Spatial Distribution and Ecological Risk Assessment of Heavy Metal Elements in Surface Water of Ulansuhai Lake |
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| DOI： |
| 中文关键词: 重金属元素 空间分布 生态风险评估 乌梁素海 |
| 英文关键词: Heavy metal element Spatial distribution Ecological risk assessment Ulansuhai Lake |
| 基金项目:国家自然科学基金资助项目（41263010） |
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| 中文摘要: |
| 于2014年4月采集乌梁素海表层水样，利用地统计方法分析重金属元素Cd、Cr、Cu、Hg、Pb、Zn的空间分布特征，并通过计算元素的富集系数来分析其富集水平。结果表明：重金属元素具有相似的空间分布特征，除局部区域外均呈现出随水流方向从北到南递减的趋势，Cu在局部区域存在高值区，Pb在水流经10号采样点后质量浓度逐渐升高。元素的富集系数从高到低依次为Hg＞Cd＞Cu＞Zn＞Cr＞Pb，其中Hg富集非常明显，达到高等富集和很高富集水平，Cd在4号采样点达到中等富集水平，其他元素为不足最小富集水平。 |
| 英文摘要: |
| This paper analysed the spatial distribution characteristics of heavy metals such as Cd, Cr, Cu, Hg, Pb and Zn in the surface water of Ulansuhai Lake in April 2014 by statistical method, and the elements enrichment level by calculating the enrichment coefficient. The results showed that heavy metal elements in the whole lake had similar spatial distribution characteristics. Besides some local area of the lake, it decreased from north to south along with the water flow. Cu had a high value in some areas, the concentration of Pb increased after water pass through No.10 sampling point. The descending order of the element enrichment coefficient was Hg＞Cd＞Cu＞Zn＞Cr＞Pb. Hg enriched obviously, which reached to high and higher enrichment level. Cd reached to middle enrichment level at No.4 sampling point, other elements were not enough to the minimum level of enrichment. |
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