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研究了云杉人工林主要材性指标与林龄、海拔梯度及林木等级间的关系，比较了人工林与６０～１００年天然林主要材性指标的差异。结果表明，１５，２０和３０年人工林主要材性指标差异不显著；不同林分密度人工林纤维长宽比差异显著；不同海拔梯度人工林及不同林木等级间基本密度差异显著。人工中幼林与天然林主要材性指标差异不明显，均是优良纸浆原料。初步认为云杉纸浆材培育周期为２５年。
Studied the relationship between the main woody indicators of Picea mongolica plantations and their stand ages, altitudinal gradients and forest grades, and compared the difference of the main timber indexes between the artificial forests and the natural forests of 60 ~ 100 years. The results showed that there was no significant difference in the main timber indices between 15, 20, and 30 years. The differences in aspect ratio of the plantations with different stand density were significant. The differences of basic density among different altitudes and plantations were significant. There was no significant difference in the main timber indexes of artificial mid-young and natural forests, both of which were excellent pulp raw materials. Preliminary believe that spruce pulp cultivation period of 25 years.