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由红花尔基3块樟子松标准地随机抽取29株平均优势木,对树干解析资料研究表明,该地区的(?)子松林分和个体的高、径生长变异随年龄的增大而增大。变异增长率分别在9—12年和12—15年时达最大;总体成、幼龄生长变异的相(?)年龄的增大更加密切,30年以后相关系数趋于稳定。可以用21年生时的树高和胸径来预测51年生时的材积,其中树高为主导因予。不同立地条件下,长势好的林分,早期预测可以提前6—9年。
The average dominance trees of 29 species were randomly sampled from 3 Pinus sylvestris var. Mongolica cultivated in Honghuaerji. Analysis of the tree trunk data showed that the variation of height and diameter of Pinus densa (L.) Increase. The mutation growth rate reached the maximum at 9-12 years and 12-15 years respectively. The overall age of the overall growth and juvenile growth increased more closely, and the correlation coefficient tended to be stable after 30 years. The tree height and DBH at 21 years of age can be used to predict the volume at 51 years of age, of which tree height is the dominant factor. Different sites, growing good stand, early prediction can be 6-9 years in advance.