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通过对吉林省中东部蒙古栎（Quercusmougolica）天然林和人工林平均优势木的树干纵向解析材料研究表明：蒙古栎不同林分个体的生长变异与成、幼龄生长性状的相关系数均随年龄的增大而增长．其中天然林生长变异增长率和相关系数增长率均在35a时最高，以后随年龄的增大而减少并趋于平稳，而人工林为18a．综合分析蒙古栎不同性状的生长变异规律、早晚期相关及选择效率，初步确定天然林和人工林的最性早期选择年龄分别为35a和18a并用此时的胸径生长量对伐期的材积进行早期预测。
Through the longitudinal analysis of the tree trunk of the average dominant wood of natural and artificial forests of Quercus mougolica in the middle and eastern part of Jilin Province, the correlation analysis shows that the correlations between growth variation and adult growth characters of different stands of Quercus mongolica vary with age Increase and grow. Among them, the growth rate of natural forest growth and the growth rate of the correlation coefficient were the highest at 35 years, then decreased and stabilized with increasing age, while the plantation was 18 years. Comprehensive analysis of the growth variation of different traits of Quercus mongolica, early and late correlation and selection efficiency, initially determined the natural and forestry plantation of the earliest age of selection were 35a and 18a, respectively, and use the DBH at this time the volume of early cutting prediction.