| 基于扩散方程的污染物传播模型 |
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| 引用本文： | 胡杰,高明杰,金亦帅.基于扩散方程的污染物传播模型[J].南通职业大学学报,2012,26(2):64-68,74. |
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| 作者姓名： | 胡杰 高明杰 金亦帅 |
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| 作者单位： | 南京信息工程大学,南京,210044 |
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| 摘 要： | 根据样点数据，利用Surfer软件，采用克里格插值法进行最优内插，绘制了城市土壤重金属分布图；采用卡梅罗综合指数评价法，考虑不同重金属元素对人体健康的影响，修订了评价指标的权重，构建了城市土壤污染评价体系；运用聚类分析模型和方差分析模型，说明重金属污染的主要原因；建立污染物浓度扩散的偏微分方程模型，通过区域划分、方程简化和最小二乘法，求出了污染源的地理位置；分析污染物扩散方程优缺点，提出了推广和拓展的设想。
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| 关 键 词： | 市土壤 重金属 污染 扩散方程 非线性拟合 |
Pollutants Propagation Model Based on Diffusion Equation |
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| HU Jie
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GAO Ming-jie
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JIN Yi-shuai.Pollutants Propagation Model Based on Diffusion Equation[J].Journal of Nantong Vocational College,2012,26(2):64-68,74. |
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| Authors: | HU Jie GAO Ming-jie JIN Yi-shuai |
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| Institution: | (Nanjing University of Information Engineering,Nanjing 210044,China) |
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| Abstract: | This paper draws up urban heavy metal distribution maps,according to sample point data,using Surfer software and Kriging Interpolation Method to optimize interpolation.It constructs the assessment system of urban soil pollution by adopting Carmelo Composite Index Assessment,taking the impact of different heavy metal elements on human health into consideration,and revises the weights of assessment.It explains the main reason of heavy metal pollution through the use of cluster analysis model and analysis of variance model.Itestablishes Partial Differential Equation Models for pollutant density diffusion.The location of pollution sources can be found through zone division,equation simplification and Least Squares Method.The author proposes the idea to promote and expand it through the analysis of the advantages and disadvantages of pollutant dispersion equation. |
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| Keywords: | urban soils heavy metal pollution diffusion equation nonlinear fitting |
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