| 基于区间数排序法的农田土壤重金属生态风险分析 |
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| 引用本文： | 王晓飞,邓超冰,尹娟,许桂苹,邓渠成.基于区间数排序法的农田土壤重金属生态风险分析[J].中国环境监测,2017,33(3):106-113. |
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| 作者姓名： | 王晓飞 邓超冰 尹娟 许桂苹 邓渠成 |
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| 作者单位： | 广西大学轻工与食品工程学院, 广西 南宁 530004;广西壮族自治区环境监测中心站, 广西 南宁 530028,广西大学轻工与食品工程学院, 广西 南宁 530004;广西壮族自治区环境监测中心站, 广西 南宁 530028,广西大学轻工与食品工程学院, 广西 南宁 530004;广西财经学院管理科学与工程学院, 广西 南宁 530003,广西大学轻工与食品工程学院, 广西 南宁 530004;广西壮族自治区环境监测中心站, 广西 南宁 530028,澳洲国立大学 克劳福德公共政策学院, 堪培拉 541004 |
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| 基金项目： | 广西自然科学基金项目“西江流域水环境重金属污染机制与调控”（2013GXNSFEA053001）；广西自然科学基金重大项目“基于镉、砷污染农田安全利用的生态修复研究”（2015GXNSFEA139001）；广西财经学院管理科学与工程学院开放性课题“基于无人机遥感的内陆水环境应急监测研究”（GK2015009） |
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| 摘 要： | 将土壤中重金属浓度以区间形式表示,运用土壤重金属生态风险分析模型得出风险区间。为区分风险等级并引入区间数排序法,建立了一种基于不确定性的区间数排序法的土壤重金属污染风险评价模型。运用该模型对不同研究区域土壤重金属生态风险和同一研究区域土壤中不同重金属生态风险进行分析。结果表明,A采样区的风险最大,其区间排序向量为0.275 5,区间向量排序为ABDEC,与内梅罗综合污染指数排序结果一致。区间数排序法考虑到评价过程中的不确定性,避免主观因素的影响。因此,土壤重金属生态风险量化结果更加客观直观,为风险管理提供较为精确的理论依据。
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| 关 键 词： | 重金属 生态风险 区间数排序法 农田 |
| 收稿时间： | 2016/5/11 0:00:00 |
| 修稿时间： | 2016/6/12 0:00:00 |
Ecological Risk Assessment of Heavy Metals in the Contaminated Farmland Based on Ranking-Method of Interval Numbers |
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| WANG Xiaofei,DENG Chaobing,YIN Juan,XU Guiping and DENG Qucheng.Ecological Risk Assessment of Heavy Metals in the Contaminated Farmland Based on Ranking-Method of Interval Numbers[J].Environmental Monitoring in China,2017,33(3):106-113. |
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| Authors: | WANG Xiaofei DENG Chaobing YIN Juan XU Guiping and DENG Qucheng |
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| Institution: | College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China;Guangxi Zhuang Autonomous Region Environmental Monitoring Center, Nanning 530028, China,College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China;Guangxi Zhuang Autonomous Region Environmental Monitoring Center, Nanning 530028, China,College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China;College of Management Science and Engineering, Guangxi University of Finance and Economics, Nanning 530003, China,College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China;Guangxi Zhuang Autonomous Region Environmental Monitoring Center, Nanning 530028, China and Crawford School of Public Policy, Australian National University, Canberra 541004, Australia |
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| Abstract: | The model for ecological risk assessment of heavy metals in soil was established, in which the concentrations of heavy metals was expressed as interval numbers. Considering it is difficult to compare the interval numbers, the ranking-method of interval numbers was introduced. And the model of ecological risk assessment for heavy metals in soil based on ranking-method of intervals numbers was built. This model was applied to the risk assessment of heavy metals in the different study area farmland soil and different heavy metals in the same study area farmland soil in Guangxi, and the results were compared with Nemerow Pollution Index method. The results showed that the risk of A is the greatest, the interval sequencing vector is 0.275 5, the order of the risk for the five sampling sites was A. B > D > E > C, the same as the order of the Nemerow Pollution Index method. Interval number ranking method consider the uncertainty in the process of evaluation, and avoid the influence of subjective factors, thus it is more intuitive and objective for the quantitative result of the ecological risk of heavy metals in soil, which can provide more accurate theoretical basis for the risk management. |
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| Keywords: | heavy metals ecological risk interval number ranking method farmland |
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