| 氮类污染物在土壤中迁移转化规律试验研究 |
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| 引用本文： | 王超.氮类污染物在土壤中迁移转化规律试验研究[J].水科学进展,1997,8(2):176-182. |
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| 作者姓名： | 王超 |
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| 作者单位： | 河海大学环境工程系 南京 210098 |
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| 基金项目： | 河海大学水资源开发利用国家专业实验室开放基金 |
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| 摘 要： | 在分析氮物质迁移过程的基础上,借助于土柱物理模型试验装置,试验研究了氮类污染物在土壤中迁移转化规律,得到了NH4+-N、NO3--N在土柱内的时空变化过程。在分析实测资料后,建立了考虑氮的迁移和转化的数学模型。根据实测资料和数学模型的数值解,运用最优化技术率定模型参数,参数验证结果与独立的实测值吻合良好。
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| 关 键 词： | 氮类污染物 迁移转化 物理模型 试验研究 数学模型 参数估算 |
| 收稿时间： | 1995-10-18 |
Experimental Study of Nitrogen Transport and Transformation in Soils |
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| Wang Chao.Experimental Study of Nitrogen Transport and Transformation in Soils[J].Advances in Water Science,1997,8(2):176-182. |
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| Authors: | Wang Chao |
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| Affiliation: | Dept. of Environmental Engineering, Hohai Univ., Nanjing 210098 |
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| Abstract: | The soil column test in laboratory were used to investigate nitrogen transpor and transformation.A new type of tension sensors was used to collect soil-tension data automatically.Through tests of the soil column,enough data were obtained.This paper estimated the soil hydraulic,transport and transformation parameter by using tracer and a combined simulation-optimization approach under variably flow condition.A nonlinear weighted least square algorithm was used to estimate the model parameters by minimizing deviations and those predicted by the numerical model transpor and transformation process. |
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| Keywords: | nitrogen contamination transpor and transformation physical model experimental study mathematical model parameter estimation |
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