人工林长白落叶松木材材质早期预测模式(Ⅰ)——材性变异、幼龄期与成熟期的界定

以现代统计预测理论为基础,结合人工林长白落叶松木材生长轮材性变异规律,提出了木材幼龄期与成熟期划分研究的理论与方法.根据幼龄材与成熟材材性的特点,建立了木材幼龄期与成熟期界定的有序聚类最优分割模型(OCDB模型).测试了人工林长白落叶松木材的晚材率、生长轮宽度、管胞长度和宽度、微纤丝角及生长轮密度等材性指标,并且对其统计分析,得出木材材性变异规律.采用有序聚类最优分割模型划分出人工林长白落叶松的幼龄期为15a.

STUDY ON THE EARLY STAGE FORECASTING PATTERN OF WOOD PROPERTIES OF LARIX OLGENSISIN PLANTATION(I)-WOOD VARIATION, THE PERIOD OF JUVENILE WOOD AND MATVRE WOOD

Based on the modern statistical forecasting theory, combined the variationpattern of wood growth ring properties of Larix olgensis A. in plantation. thetheory and method of demarcation line about juvenile wood and mature woodwere put forward. According to the property of juvenile wood and mature wood,the model of ordered cluster optimization classification was set up about thejuvenile period and matruation period (OCDB Model). The item of latewoodpercentage, growth ring width, tracheid length and width, micro-fiber angle andwood grwoth ring density were measured and the wood variation pattern wasobtained. By OCDB model method, the juvenile period of Larix olgensis A. inplantation was 15 years old. The results could provide the foundation for theearly stage forecasting of wood properties.