| 城市土壤的环境质量评价 |
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| 引用本文： | 费杨,陈静,王颖.城市土壤的环境质量评价[J].南通职业大学学报,2012,26(2):69-74. |
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| 作者姓名： | 费杨 陈静 王颖 |
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| 作者单位： | 南京师范大学,南京,210046 |
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| 摘 要： | 就8种重金属元素在城市不同区域的污染浓度数据进行建模分析。应用单因子污染指数法、尼梅罗综合污染指数法及地质累积指数法，从不同角度对城市土壤重金属污染程度作出评价；采用因子分析法研究多个变量的相关性，按照成因上的联系进行归类，进而判别城市重金属的污染来源及其分布规律；针对重金属元素在土壤中的扩散特征，采用抛物型的偏微分方程模型，通过反演的方法拟合出污染源的位置；最后总结模型的优缺，最，并提出进一步收集信息的设想。
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| 关 键 词： | 城市土壤 环境质量 重金属污染 建模评价 |
Assessments of Environmental Quality of Urban Soils |
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| FEI Yang
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CHEN Jing
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WANG Ying.Assessments of Environmental Quality of Urban Soils[J].Journal of Nantong Vocational College,2012,26(2):69-74. |
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| Authors: | FEI Yang CHEN Jing WANG Ying |
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| Institution: | (Nanjing Normal University, Nanjing 210046, China) |
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| Abstract: | This paper conducts a modeling analysis of the pollution density data of eight heavy metals in dif- ferent urban areas. It gives assessments on the degrees of heavy metal contamination of urban soils from dif- ferent perspectives using Single Factor Pollution Index Method, Nemero Comprehensive Pollution Index and Geological Accumulation Index. It makes use of factor analysis to research on the relevance of multiple vari- ables and classifies them based on relations of causes to further distinguish the sources of pollution of urban heavy metals and their distribution. In connection with the diffusion characteristics of heavy metals in soils , this paper adopts Parabolic Partial Differential Equation Model and Inversion Method to fit out the location of pollution source. Finally, the author summarizes the advantages and disadvantages of the model and put for- ward the assumption of further collecting information. |
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| Keywords: | urban soils environmental quality heavy metal pollution assessment mathematical modeling |
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