A long-term forecast method of timber growth ring density based on process neural network was proposed in this paper.
提出一种基于过程神经网络的木材生长轮密度长期预测方法。
So it is very important to find out the variation regulation of wood ring density in growth process.
解剖树木生长过程木材密度变化规律，研究年轮内密度的变化十分重要。
As planting density increased, the growth ring width and tracheid row decreased but proportion of late wood increased.
造林密度大，则生长轮变窄，管胞列数减少，晚材率增加。
Planting density has significant effects on fiber morphology, physical and chemical properties of Lalix olgensis wood. Except growth-ring width, remarkable differences was found in other indexes.
初植密度对落叶松人工林的纤维形态特征、物理特征及化学特征有重要的影响，除生长轮宽度外，其它各指标差异显著；
Planting density has significant effects on fiber morphology, physical and chemical properties of Lalix olgensis wood. Except growth-ring width, remarkable differences was found in other indexes.
初植密度对落叶松人工林的纤维形态特征、物理特征及化学特征有重要的影响，除生长轮宽度外，其它各指标差异显著；
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