【摘要】 本文通过对几种数学模型的分析,采用了Chapman-Richards函数拟合皖南杉木标准林分蓄积生长过程,证实蓄积生长过程是一组多形而又遵循一定规律变化的曲线,并揭示了一些各指数级蓄积生长的规律。利用数学模型进行生长阶段划分比人为划分更严密。更多还原

【Abstract】 Based on the analysis of several mathematical models, this paper fits volume growth process of Chinese fir standard stands in Anhui Province by Chapman-Richards function. The results show that the volume growth process of standard stands is a group of curves which is polymorphous and regular. This paper reveals some regularities of stocking growth in different site index classes. Dividing growth stage by use of mathematical modes is stricter than by use of subjective methods, and it provides scientific basis for improvement and management of Chinese fir.更多还原