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根据贡嘎山 16块样地的调查资料 ,运用逻辑斯谛模型探讨了暗针叶林不同林型优势木生长动态。建立了峨眉冷杉 (Abiesfabri)、麦吊杉 (Picea brachytyla)和鳞皮冷杉 (Abies squamata)的高、径和材积生长的逻辑斯谛模型。研究结果表明 ,3种林分优势木的高、径和材积的速生期和速生点都不相同 ,林线附近的峨眉冷杉高、径和材积的速生期最短 ,麦吊杉高和材积的速生期最长 ,鳞皮冷杉基径的速生期最长 ;林分优势木的生长动态和森林更新关系密切 ,各优势木的生长指标表明各自立地生态条件差异很大。
According to the survey data of 16 plots in Gongga Mountain, the growth dynamics of dominant woods in different forest stands of dark coniferous forest was discussed by Logistic model. A logistic model of height, diameter and volume growth of Abiesfabri, Picea brachytyla and Abies squamata was established. The results showed that the height, diameter and volume of the dominant species of the three stands differed in their fast-growing and fast-growing points. The height, diameter and volume of the Emeian fir were the shortest, The longest period and the fastest growing period of scales fir base diameter were the longest. The growth dynamics of dominant wood was closely related to the forest renewal, and the growth indexes of the dominant wood showed that the ecological conditions of each site varied greatly.