【摘要】 根据31块标准地每木调查和树干解析资料,分别采用10个材积方程进行回归拟合,通过相关程度与标准差比较,以及回归方程与回归系数的显著性检验,选出了南方型杨树标准材积表的方程模型:V=0.0000383707D^1.672H^1.247,经检验,据此编制的立木二元材积表基本满足精度要求,可以在生产中加以使用。更多还原

【Abstract】 Based on the data from completed every—tree investigating and stem growth analysis in 31 standard plots, 10 volume equations were adopted respectively to fit it through regression in this paper. After comparison of correlation degree with standard error, and test in significance for regression equation and coefficient, the equation: V=0. 000 038 370 7D^1.672H^1.247 was selected as the model of standard volume table for southern type of poplar, which is the two—way volume table compiled according to it is basically satisfied an accurate requirement, and so can be popularized in production.更多还原