一种耦合化学反应的溶质运移模型的应用  

APPLICATION OF A SOLUTE TRANSPORT MODEL COUPLED WITH CHEMICAL REACTION

作　　者：张丛志[1] 徐绍辉[2] 张佳宝[1] 

机构地区：[1]中国科学院封丘农业生态国家实验站 [2]青岛大学环境科学与工程系,山东青岛266071

出　　处：《土壤学报》2006年第6期905-910,共6页Acta Pedologica Sinica

基　　金：土壤与农业可持续发展国家重点实验室基金项目;国家重点基础研究发展规划项目(2005CB121103)共同资助

摘　　要：土壤中的化学作用对溶质运移具有重要影响。离子交换和络合反应是土壤中常见的化学反应。利用室内土柱出流实验对这两种作用下的土壤溶质运移进行了探讨,用CXTFIT软件模拟了不考虑化学反应时的常规溶质运移;用水文地球化学模拟软件PHREEQC进行了耦合离子交换和络合反应运移模型的模拟。结果表明,耦合模型的模拟精度更高,从而也初步证明了耦合模型是成功的。Chemical reaction in soil solution has some important effects on solute transport. Ion exchange and complexation reaction are the common chemical reactions observed in soil. An indoor leaching experiment was conducted to explore effects of the two reactions on solute transport. The traditional convection-dispersion equation （CDE） regardless of chemical reactions was simulated by CXTFIT, and a model coupled with ion exchange and complexation reaction was simulated by PHREEQC, a hydrologic geochemical software. Results show that the coupled model is more precise in simulation, which indicates that the coupled model is successful.

关 键 词：数学模型 离子交换 络合反应 溶质运移 

分 类 号：S152[农业科学—土壤学]