| 反应性溶质在不同质地饱和土柱中运移的数值模拟 |
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| 引用本文： | 张丛志,张佳宝,徐绍辉,张辉.反应性溶质在不同质地饱和土柱中运移的数值模拟[J].水科学进展,2008,19(4):552-558. |
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| 作者姓名： | 张丛志 张佳宝 徐绍辉 张辉 |
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| 作者单位： | 1.中国科学院南京土壤研究所, 土壤与农业可持续发展国家重点实验室, 封丘农田生态系统国家试验站, 江苏, 南京, 210008; |
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| 基金项目： | 国家重点实验室基金，国家重点基础研究发展计划(973计划) |
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| 摘 要： | 盐渍土壤中的物理化学作用对溶质运移具有重要影响.吸附和离子交换作用是土壤中常见的反应.利用室内土柱出流实验对这两种作用下的单组分和多组分溶质运移进行了探讨,用CXTFIT软件模拟了只考虑对流-弥散的常规溶质运移;用水文地球化学模拟软件PHREEQC进行了耦合吸附和离子交换反应的模拟.结果表明,土壤质地对单组分溶质的运移具有重要影响,而在多组分溶质运移中,组分之间的相互作用对溶质运移具有更为重要的影响,并且耦合物理化学作用的模拟精度更高.
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| 关 键 词： | 反应性溶质 盐渍土壤 饱和土柱 溶质运移 数值模拟 |
| 收稿时间： | 2007-03-08 |
Numerical simulation of reactive solute transport in saturated column of different soils |
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| ZHANG Cong-zhi,ZHANG Jia-bao,XU Shao-hui,ZHANG Hui.Numerical simulation of reactive solute transport in saturated column of different soils[J].Advances in Water Science,2008,19(4):552-558. |
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| Authors: | ZHANG Cong-zhi ZHANG Jia-bao XU Shao-hui ZHANG Hui |
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| Institution: | 1.State Experimental Station of Agro-Ecosystem in Fengqiu, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;2.Graduate School, Chinese Academy of Sciences, Beijing 100049, China;3.Department of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China |
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| Abstract: | Physical chemistry reaction in saline soils has some important effect on saline solute transport,and ion exchanges are the common chemical reactions observed in soil.Indoor leaching experiment were conducted to explore effects of the two reaction solute on single component/multi-component saline solute transport.The traditional convection-dispersion equation(CDE) regardless of chemical reactions was simulated by CXTFIT,and the reaction solutes coupled with adsorption,and ion exchange were simulated by PHREEQC,a hydrologic geochemical software.Results show that soil texture has important effect on single component saline solute transport,the effects between components are important in saline solute transport,and the effect coupled physical and chemical reaction is more precise in simulation. |
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