地貌学与最优化原理相结合的途径在确定Nash模型参数中的应用

Application of approach to geomorphology combined with optimal principle in determining parameters of Nash model

本文指出了现行确定Ｎａｓｈ模型参数ｎ和Ｋ的最优化方法中存在不唯一性的缺点，在进一步认识ｎ和Ｋ的物理意义基础上，应用文献［１］中关于现行地貌瞬时单位线与概念性模型在理论上基本等价的结论，导出了ｎ与霍顿地貌参数之间的关系，提出了用最优化原理确定Ｋ的思路。

The Nash model contains two parmeters, n and K. In this paper, the relationship between parameter n and Horton's geomorphology parameters is obtained based on physical significance of parameter n, and the method of determining parameter K is suggesled by applying optimal principle.