| 引用本文: | 杨丽原,沈吉,张祖陆,朱育新,孙庆义.南四湖表层底泥重金属污染及其风险性评价.湖泊科学,2003,15(3):252-256. DOI:10.18307/2003.0309 |
| YANG Liyuan,SHEN Ji,ZHANG Zulu,SUN Qingyi,Zhu Yuxin.Distribution and Ecological Risk Assessment for Heavy Metals in Superficial Sediments of Nansihu Lake. J. Lake Sci.2003,15(3):252-256. DOI:10.18307/2003.0309 |
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| 南四湖表层底泥重金属污染及其风险性评价 |
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杨丽原1,2, 沈吉1, 张祖陆3, 朱育新4, 孙庆义1
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1.中国科学院南京地理与湖泊研究所, 南京 210008;2.中国科学院研究生院, 北京 100039;3.山东师范大学地理系, 济南 250014;4.济宁市水利局, 济宁 272119
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| 摘要: |
| 通过对南四湖表层底泥中的重金属元素浓度分析,揭示出南四湖不同湖区重金属污染物空间分布特征.利用潜在生态风险指数(RI)和地质积累指数(Igeo)两种指标相结合的方法对表层底泥中重金属污染程度进行评价.结果表明,南四湖上级湖的重金属污染主要以汞为主,并依据潜在生态风险指数将南四湖上级湖分为三个生态风险功能区:昭阳湖轻污染区;独山湖中等污染区和南阳湖重污染区. |
| 关键词: 南四湖 底泥 重金属污染 风险性评价 |
| DOI：10.18307/2003.0309 |
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| 基金项目:中国科学院南京地理与湖泊研究所知识创新课题(CXNIGLAS-A02-04);山东省自然科学基金重点资助项目(Z2000E01)联合资助. |
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| Distribution and Ecological Risk Assessment for Heavy Metals in Superficial Sediments of Nansihu Lake |
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YANG Liyuan1,2, SHEN Ji1, ZHANG Zulu3, SUN Qingyi4, Zhu Yuxin1
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1.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, P. R. China;2.The Graduate School of Chinese Academy of Sciences, Beijing, 100039, P. R. China;3.Department of Geography, Shandong Normal University, Jinan, 250014, P. R. China;4.Jining Bureau of Water Resource, Jining, 272119, P. R. China
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| Abstract: |
| Heavy metal concentrations (As, Co, Cr, Cu, Hg, Mn, Ni, Pb, Zn) of superficial sediments in the Nansihu Lake were investigated in April, 2002. The determination of the heavy metal distribution of the lake's superficial sediments was carried out by ICP-AES. The potential ecological risk index (RI) and geological acumination index(Igeo), as the quantitative diagnostic tools, were used to evaluate the pollution degree of various heavy metals in the sediments. The results show the distribution of pollutants in the sediments could be divided into three sections with different ecological risk characteristics:(1) light pollution area in Zhaoyang Lake, (2) medium pollution area in Dushan Lake, and ⑶ heavy pollution area in Nanyang Lake. |
| Key words: Nansihu Lake sediment heavy metal pollution risk assessment |
