作　　者： ; ;

机构地区： 福建林学院

出　　处： 《江西农业大学学报》 1999年第4期586-591,共6页

摘　　要： 通过应用方程V= aDb 和V= aDbHc 拟合湿地松立木材积表模型,用对数线性化最小二乘法来实现最初的参数估计,并用改进单纯形法对模型参数组合进行优化,得到优化后的湿地松一元、二元立木材积模型:V1 =0 .000 052 846 D2 .779 867 和V2 = 0 .000 059 398 D2.159 967 H0.6678276 ,并利用此高精度的模型来编制湿地松的一元、二元立木材积表。 By using the equations V=aD b and V=aD bH c and usual method for fitting those equations, the authors firstly linearized the parametres; then caculated the parameters by Least-square Method, one-way and two-way volume maths models of Pinus elliottii were worked out; then optimized them by Modified Simplex Method; they were established and described as : V 1 =0.000052846D 2.779867 and V 2 = 0.000259398 D 2.159967 H 0.6678276 . It suggested that the precision of volume tables of Pinus elliottii will be increased by application of Modified Simplex Method for further optimized models.

关 键 词： 湿地松 改进单纯形法 材积模型优化

领　　域： [农业科学] [农业科学]