Parameter estimate of the whole stand model with measurement error

Based on the whole stand model of Pinus massoniana in Daqingshan Mountain, Guangxi Zhuang Autonomous Region, a simulation experiment was devised. The observations of stand density, average diameter, dominant height, average height and form height with measurement error were constructed. Using the nonlinear measurement error simultaneous equation method, the parameters of whole stand model were estimated and results indicated that the dominant height model, average height model and form height model had no clear bias just as the results of the least square method, while basal area model, average diameter model and stand density model had no bias, which was contrary to the results of the least square method. Therefore, the nonlinear measurement error simultaneous equation method was better than the least square method.