摘要
通过实测239株凹叶厚朴样木的胸径、树高和材积,采用遗传算法,三次设计法,改进单纯形法拟合材积方程并与对数线性化最小二乘法进行比较.结果表明:采用遗传算法、三次设计法和改进单纯形法建立二元材积方程优于对数线性化最小二乘法;对数线性化最小二乘法的适用性检验统计量F不能服从F分布,说明不能用对数线性化最小二乘法拟合凹叶厚朴的材积方程;同时用模外25株凹叶厚朴样木进行检验,遗传算法、三次设计法和改进单纯形法建立的二元材积方程的理论材积与实测材积相吻合.采用遗传算法建立的立木材积方程编制了凹叶厚朴的胸径、树高二元材积表.
The standing volume equation based on both DBH and tree height for Magnolia officinalis spp. biloba was first studied in this paper. By actually surveying the DBH, the height and the volume for the 239 samplings of Magnolia officinalis spp.biloba, the volume equations were established by using the genetic algorithm, three designs and the modified simplex were compared with the logarithm linearise minimization double multiplication method. The results indicate that the volume equations established by using the genetic algorithm, three designs and the modified simplex are better than the logarithm linearise minimization double multiplication method, and the statistic F of volume equation established by the logarithm linearise minimization double multiplication method didn't obey the F distribution the theoretical values calculated by using the genetic algorithm, three designs and the modified simplex were identical with the observed values of the 25 samplings of Magnolia officinalis spp. biloba of out model data. The standing volume table based on both DBH and tree height for Magnolia officinalis spp.biloba was compiled in this paper.
出处
《北华大学学报（自然科学版）》
CAS
2002年第6期528-533,共6页
Journal of Beihua University（Natural Science）
基金
福源省三明市科委项目 (2 0 0 0 L 4 0 )
