| 城市表层土壤重金属污染扩散模型 |
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| 引用本文： | 曹秋秋,朱成,赵新宇.城市表层土壤重金属污染扩散模型[J].西昌学院学报(自然科学版),2012(4):20-23. |
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| 作者姓名： | 曹秋秋 朱成 赵新宇 |
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| 作者单位： | 宿迁学院,江苏宿迁223800 |
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| 摘 要： | 首先利用MATLAB软件绘制出该区8种重金属浓度的等高线图,得出土壤中重金属的空间分布。然后采用尼梅罗综合污染指数法评价土壤重金属各要素的污染程度,得出5个类区8种重金属的污染等级。分析重金属污染物的传播特征,建立微分方程扩散模型,最后确定污染源的位置。
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| 关 键 词： | 土壤 重金属 扩散 尼梅罗污染指数 偏微分方程 |
The Model of Heavy Metals Pollution Diffusion on City Surface Soil |
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| CAO Qiu-qiu,ZHU Cheng and ZHAO Xin-yu.The Model of Heavy Metals Pollution Diffusion on City Surface Soil[J].Journal of Xichang College,2012(4):20-23. |
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| Authors: | CAO Qiu-qiu ZHU Cheng and ZHAO Xin-yu |
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| Institution: | (Suqian College,Suqian,Jiangsu 223800) |
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| Abstract: | Firstly,using the MATLAB software to map out the contour map of eight heavy metals concentration,we conclude the spatial distribution of heavy metals in soil,then adopt the Nemerow comprehensive pollution index method to evaluate soil heavy metals pollution degree of each factor and know the five kind of areas and pollution level of eight heavy metals.We analysis the propagation characteristic of heavy metal pollutants,build a set of differential equations diffusion model,and finally determine the position of the pollution sources. |
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| Keywords: | Soil Heavy metals Diffusion The Nemerow pollution index Partial differential equation |
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