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林业科学1957年第1期上,黄中立同志的论文“我国杉木材积生长率等问题的探讨”中,提出了用林龄表示材积生长率的公式:P=(a+bA-cA~2)/integral from 0 to A(a+bA-cA~2)dA)×100这是计算材积生长率的一种新方法,正如黄同志说的,还需要作进一步的探讨。本文单就林龄误差问题来讨论。文中论点正确与否,尚希黄同志及读者们批评指正。下列比例式为生长率的计算基础:
Forestry Science in 1957 No. 1, Huang Zhongli paper “China fir volume growth rate and other issues,” put forward the use of forest stand volume growth rate formula: P = (a + bA-cA ~ 2) / integral from 0 to A (a + bA-cA ~ 2) dA) × 100 This is a new method for calculating the volume growth rate. As Huang said, further study is needed. This article on the issue of forest age errors to discuss. The article is correct or not, Shang Xi comrades and readers criticize correction. The following proportions are the basis for calculating the growth rate: