【摘要】 利用有序样本分类的最优分割法,对伊春林区Ⅲ地位级的天然红松林单木生长阶段进行了多元定量研究。划分结果:林木生长分为四个阶段。第Ⅰ个阶段为1～90a,第Ⅱ个阶段为100～130a,第Ⅲ个阶段为140～260a,第Ⅳ个阶段为>270a。这一划分与前人研究的结果大体吻合,但划分的理论与方法更具严谨性。更多还原

【Abstract】 Multivariate quantitative study on single tree growth stage of natural korean pine of site class Ⅲ in Yichun forest region is made by using oprimization method to classify ordered samples. The growth process is divided into 4 stages. The result is: stage Ⅰ 1～90 a, stage Ⅱ 100～130 a, stage Ⅲ 140～260 a. stage Ⅳ>270 a. It is generally identical with the couclusions from the preceding studies, but the theory and the method of the division is stricter than those applied in the preceding studies.更多还原