<正>Ｗｅｉｂｕｌ分布拟合实际的林分直径分布，效果良好。在Ｗｅｉｂｕｌ三参数及林分因子的基础上，建立了参数预测模型和参数回收模型。经误差检验，参数回收模型优于参数预测模型。

Weibull distributions were fitted to diameter freqency data sets. The Weibull function was found very suitable. Parameter prediction models (PPM) and parameter recovery models (PRM) were developed based on the three Weibull distribution parameters and stand attributes. By the error test, estimated precision of the PRM was better than the PPM.