Spatial and temporal variabilty of coupled mass and energy transport processes in soil

在寒冷、半干旱地区，冻土中的水热运动对土壤水分和能量平衡有着重要的影响。例如，春季融雪的水可能有助于补充对生态系统生产力至关重要的土壤水分库，并根据其热含量，可能重新冻结或有助于土壤解冻。了解这些水流和热量输送过程对土壤水分和能量平衡的复杂相互作用和影响，是评估与引入土壤的污染物相关的环境风险和预测气候变化对粮食生产影响的关键。

In cold, semi-arid regions, water flow and heat transport in frozen soils significantly influences the soil water and energy balance. For example, water from spring snowmelt may contribute to recharging soil moisture reservoirs important for ecosystem productivity and, depending on its heat content, may be re-frozen or aid in soil thawing. Understanding the complex interactions between and the influence of these water flow and heat transport processes on soil water and energy balances is key to assessing environmental risks associated with contaminants introduced into the soil and predicting the impacts of climate change on food production.