| 海洋沉积物重金属生态风险评价方法比较及实例验证——以莱州湾为例 |
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| 引用本文： | 赵玉庭,董晓晓,王立明,齐延民,由丽萍,孙珊,马元庆.海洋沉积物重金属生态风险评价方法比较及实例验证——以莱州湾为例[J].海洋通报,2019,38(3). |
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| 作者姓名： | 赵玉庭 董晓晓 王立明 齐延民 由丽萍 孙珊 马元庆 |
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| 作者单位： | 山东省海洋资源与环境研究院 山东省海洋生态修复重点实验室,山东 烟台,264006;山东省海洋资源与环境研究院 山东省海洋生态修复重点实验室,山东 烟台,264006;山东省海洋资源与环境研究院 山东省海洋生态修复重点实验室,山东 烟台,264006;山东省海洋资源与环境研究院 山东省海洋生态修复重点实验室,山东 烟台,264006;山东省海洋资源与环境研究院 山东省海洋生态修复重点实验室,山东 烟台,264006;山东省海洋资源与环境研究院 山东省海洋生态修复重点实验室,山东 烟台,264006;山东省海洋资源与环境研究院 山东省海洋生态修复重点实验室,山东 烟台,264006 |
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| 基金项目： | 国家重点研发计划项目 （2018YFC1407605）；山东省自然科学基金 （ZR2016DP06）；山东省自然科学基金 （ZR2014DQ018）；山东省渤海海洋生态修复及能力建设项目 （20140601）。 |
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| 摘 要： | 利用2016年8月份莱州湾沉积物中Hg、Cd、Pb、Cu、As、Cr、Zn监测数据,分别利用单因子污染指数法、潜在生态风险指数法、地积累指数法、沉积物质量基准法、尼梅罗综合指数法、污染负荷指数法等6种沉积物重金属风险评价方法进行评价,以比较沉积物重金属生态风险评估方法的适用性与局限性。结果表明,莱州湾表层沉积物中,重金属Hg、Cd、Pb、Cu、As、Cr和Zn含量分别为0.077 4 mg/kg、0.169 mg/kg、12.1 mg/kg、11.9 mg/kg、11.6 mg/kg、31.1 mg/kg、45.3 mg/kg。不同方法在莱州湾沉积物风险评价结果上存在差异。单因素评价方法中,单因子污染指数法、潜在生态危害指数法、尼梅罗综合指数法的评价结果适中,地累积指数法评价结果偏轻,沉积物质量基准法评价结果偏重。Hg、As、Cd元素的污染评价结果均较大,为主要的污染元素;综合因素评价方法中,污染负荷指数法评价结果风险偏轻,潜在生态危害指数法评价结果适中,内梅罗综合指数法评价结果则倾向偏重。沉积物重金属含量与底栖生物的丰度、生物量的pearson相关系数表明,Hg与底栖生物的生物量呈现显著负相关。6种方法都有自身优缺点和适用范围,但潜在生态危害指数法更适合莱州湾沉积物重金属风险评价。
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| 关 键 词： | 沉积物 重金属 生态风险评估 莱州湾 |
| 收稿时间： | 2018/8/19 0:00:00 |
| 修稿时间： | 2019/1/4 0:00:00 |
Selection and comparison of different methods for ecological risk assessment of heavy metals in marine sediments of Laizhou Bay |
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| ZHAO Yu-ting,DONG Xiao-xiao,WANG Li-ming,QI Yan-min,YOU Li-ping,SUN Shan and MA Yuan-qing.Selection and comparison of different methods for ecological risk assessment of heavy metals in marine sediments of Laizhou Bay[J].Marine Science Bulletin,2019,38(3). |
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| Authors: | ZHAO Yu-ting DONG Xiao-xiao WANG Li-ming QI Yan-min YOU Li-ping SUN Shan and MA Yuan-qing |
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| Institution: | Shandong Marine Resource and Environment Research Institute, Shandong Key Lab of Marine Ecological Restoration,Yantai 264006, China,Shandong Marine Resource and Environment Research Institute, Shandong Key Lab of Marine Ecological Restoration,Yantai 264006, China,Shandong Marine Resource and Environment Research Institute, Shandong Key Lab of Marine Ecological Restoration,Yantai 264006, China,Shandong Marine Resource and Environment Research Institute, Shandong Key Lab of Marine Ecological Restoration,Yantai 264006, China,Shandong Marine Resource and Environment Research Institute, Shandong Key Lab of Marine Ecological Restoration,Yantai 264006, China,Shandong Marine Resource and Environment Research Institute, Shandong Key Lab of Marine Ecological Restoration,Yantai 264006, China and Shandong Marine Resource and Environment Research Institute, Shandong Key Lab of Marine Ecological Restoration,Yantai 264006, China |
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| Abstract: | With field observation data of seven elements (heavy metals Hg, Cd, Pb, Cu, Cr, Zn and metalloid As) in surface sediments of the Laizhou Bay during August 2016, their ecological risks were assessed by single factor index method, potential ecological risk index method, geoaccuatio index method, sediment quality datum standard method, Nemerow index method, and pollution load index method in the present study. Results show that the average concentrations of Hg, Cd, Pb, Cu, As, Cr and Zn were 0.077 4, 0.169, 12.1, 11.9, 11.6, 31.1 and 45.3 mg/kg, respectively. The results of ecological risk assessment are different with different methods. Among the single factor evaluation methods, the results of ecological risk were moderate by single factor index method, potential ecological risk index method and Nemerow index method, while
geoaccuatio index was low andpollution load index was relatively high, The results of Hg, As and Cd were all large, which were the main pollution elements. In the comprehensive factor evaluation methods,the result of ecological risk was relatively low by pollution load index, while potential ecological risk index was moderate and Nemerow index was relatively high, Pearson correlation coefficient (r) between heavy metal concentration and benthos abundance, biomass showed that concentration of Hg was negatively correlated with benthos biomass. Each method had its own advantages and disadvantages and scope, but the potential ecologicalrisk index was more suitable for risk assessment of heavy metals in the Laizhou Bay. |
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| Keywords: | sediment heavy metals ecological risk assessment Laizhou Bay |
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