摘要
由达西定理和能量守恒原理推导了土壤水分入渗的数学模型，水平土柱法实测了模型中的基本运动参数：土壤水分扩散率Ｄ（θ），推求了土壤水分非饱和导水率Ｋ（，经过计算机用有限差分法模拟了六块不同林地的土壤水分入渗过程，实地试验检验了模拟结果。结果表明计算的累积入渗量和入渗率与实测值非常一致。经过模拟结果绘制的入渗时水分随时间变化的剖面图，形象地反映了不同林地的土壤水分入渗的全过程。
A mathematical model of soil water infiltratoin was built according to the Decy’s law and energy conservation energy principle.For establishing this model,soil mois￣ture parameters were measured in the laboratory.Process of soil water infiltration in different woodlands was simulated.The paper showed that computer simulation is con￣sistent with the experimental results for accumulative infiltration volume and infiltration rate.Infiltration profile maps drawed through simulation results objectively showed the whole process of infiltration.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1997年第1期9-17,共9页
Scientia Silvae Sinicae
基金
国家自然科学基金
关键词
土壤水分入渗
动态模拟
林地类型
Soil water infiltration,Dynamic simulation,Different types of wood￣land
