论文标题
使用数值模型模拟了受土壤层界面和地下排水系统影响的水流和溶质传输的模拟
Simulation of water flow and solute transport as affected by a soil layer interface and a subsurface drainage system using a numerical model
论文作者
论文摘要
vadose带由各种异质性和边界条件组成，这些异质性和边界条件会深刻影响土壤中的水流和溶质转运。了解这些影响对于预测土壤的生物地球化学至关重要，并防止与地下水污染相关的环境问题。 HP1模型已应用于土壤中各种水流和化学转运问题的数值分析。本文的目的是使用HP1模型评估土壤层和地下引流系统对水流和溶质传输的影响。结果表明，土壤层和地下引流系统都对土壤中的地球化学过程产生了深远的影响。土壤层阻碍了土壤中溶质的运输，并创建了用于地球化学过程的热点。另一方面，地下引流系统排出了过多的水和溶液，因此降低了深层土壤中的溶质浓度。
Vadose zone consists of various heterogeneities and boundary conditions, which profoundly impact the water flow and solute transports in the soil. Understanding these effects is vital for predicting biogeochemistry of the soil and preventing environmental issues associated with groundwater pollution. The HP1 model has been applied for numerical analysis of various water flow and chemical transport problems in the soil. The objective of the paper was to assess the effects of a soil layer and a subsurface drainage system on the water flow and solute transport in a soil column experiment using the HP1 model. Results indicated that both the soil layer and the subsurface drainage system had profound impacts on the geochemical processes in the soil. The soil layer retarded the transport of solute in the soil and created a hotspot for geochemical processes. On the other hand, the subsurface drainage system drained out an excessive amount of water and solutes from the soil and therefore decreased the solute concentration in deep soil.
