Abstract:

In this study, The models of stand age, stand mean diameter at breast height and stand volume are integrated by using the method of two-stage error-in-variable and the ordinary method separately with the soft of ForStat. The result indicates that the estimation of stand volume obtained by ordinary method has bias while the estimation of two-stage error-in-variable is obviously more accurate and has no bias. It is proved that the method of the two-stage error-in-variable and the soft of ForStat are useful method of integrating models.

Key words: Model integration, Two-stage error-in-variable, Numerical algorithm