【摘要】 本文分别以计算机模拟数据和杉木标准地数据比较了最大似然法、矩法、百分位法和回归法等四种韦布尔参数估计方法。对于计算机模拟数据,回归法估计效果最好。对于杉木标准地资料,回归法拟合效果最差,其它三种估计方法的结果比较接近,估计的参数值和拟合优度均无显著差异,但从机时费考虑,百分位法最经济,值得推崇。更多还原

【Abstract】 Four methods of estimating the three-parameter Weibull distribution were evaluated by computer simulation and field data comparison. Through computer simulation, regression Estimator is the best method. However, The simulation result of Chinese fir plot data is not so good. Other three methods, maximum likelihood estimator, moments estimator and percentile estimator almost give the same results as estimate parameter b and c of Weibull distribution by the field data. Considering that computer calculation will take a lot of time, the percentile estimator is the best one.更多还原