土壤水分运动数学模型在土壤水分研究中的作用

本文对土壤水分运动数学模型的研究方法作了概略的介绍,文章通过对土壤水分运动数学模型的建立、求解和检验的阐述,清晰地表达出运用数学模型方法的三个步骤,说明了在土壤水分运动研究中把类比方法、理想比方法和数学方法统一起来综合运用的过程;讨论了土壤水分运动数学模型的有用性及使用上的局限性,指出只有正确地认识和科学地运用它才能使其在土壤水分研究上发挥积极作用,强调数学模型的运用必须同实验观测等研究方法紧密结合。

The Use of Mathematical Model of Soil Water Movement in Soil Water Studies

Methods of studying soil water with a mathematical model of soil wa- ter movement are described in broad outline. Three steps in applying the model are related in detail, elaborating the establishment, solution and test of the model. The process is explained, in which analogism, idealization and mathematical method are integratively used in soil water movement studies. The validation and limitation of the model in application are dis- cussed. It is pointed out that if not utilized correctly and scientifically, the model may not show fully its positive aspects in soil water studies. It is also emphasized that the application of the mathematical model must be closely combined with practical survey and other study methods.