| 混养鱼塘水体与表层沉积物Cu、Zn污染特征与评价 |
| Characteristics and Evaluation of Cu and Zn Pollution between Watersheds and Surficial Sediments in the Polyculture Fish Ponds |
| 投稿时间：2013-05-03 修订日期：2013-06-05 |
| DOI： |
| 中文关键词:混养鱼塘 重金属 表层沉积物 地积累指数 潜在生态风险 |
| 英文关键词:polyculture fish ponds heavy metal surficial sediment index of geoaccumulation potential ecological risk |
| 基金项目:现代农业产业技术体系建设项目(CARS 46 45)；广西回国基金项目（2012GXNSFCA053002）；广西大学科研基金资助项目（XJZ120274）；广西大学“大学生创新创业训练计划”资助项目（1201094）。 |
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| 中文摘要: |
| 2012年5-10月对武鸣县混养鱼塘水体及表层沉积物中Cu、Zn含量进行测定，检测了水体理化指标，分析重金属的分布特征，采用地累积指数法和潜在生态风险指数法对其进行评价。结果表明，水体中重金属含量较低，Cu、Zn的浓度变化范围分别为12.33~78.11和22.99~95.78 μg/L，均达到国家Ⅱ类水质标准(GB3838-2002)；沉积物中Cu、Zn的含量均远高于水中的含量，且超出相应的土壤背景值，其最大含量分别为背景值的6.4、8.6倍；地积累指数(Igeo)为2、3，为中度污染；潜在生态风险系数(Eir<40 )和潜在生态风险指数(RI<150)评价均为轻微生态危害。 |
| 英文摘要: |
| The distribution characteristics of heavy metals were discussed based on the water quality analysis and the Cu，Zn content of water and surficial sediments in the polyculture fish ponds of the Wuming County,during May to October in 2012, and the pollution degree and potential ecological risk of heavy metals in sediments were assessed with both the index of geoaccumulation and potential ecological risk index. The results showed that the content of heavy metals in water was relatively low than the national water standards of class Ⅴ(GB3838 2002), the concentration ranges of Cu and Zn were 12.33-78.11 μg/L and 22.99-95.78 μg/L, while the Cu and Zn content in sediments was relatively high, and the average levels exceeded the related soil background values,that was the maximum content values were 6.4 times and 8.6 times as much as the local background, respectively. The pollution extent of Cu and Zn in sediments by index of geoaccumulation (Igeo) were between class 2 to 3 (moderately to heavily polluted), and the potential ecological risk were slight according to the assessments from both the potential ecological risk factors (Eir<40) and the potential ecological risk indexes (RI<150). |
| 陈琴,吕业坚,杨 芳,张传坤,柯文海,莫生文,李文红,马瑞宁.2013.混养鱼塘水体与表层沉积物Cu、Zn污染特征与评价[J].水生态学杂志,34(5):54-60. |
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