坡向对人工林落叶松纤维形态及造纸性能的影响

Influence of Slope Direction on the Anatomical Characteristics and Paper - making Properties of Larix olgensis Plantation

以不同坡向（阳坡和半阳坡）的人工林落叶松（Larix olgensis）木材为试材,测定了木材纤维的纤维形态特征（包括管胞长度、管胞直径、壁腔比、微纤丝倾角及管胞长宽比）、物理特征（包括生长轮宽度、生长速率、晚材率及密度）和化学特征（包括综纤维素含量、木素含量、树脂含量及1％NaOH抽提物）等指标,测试分析结果表明:不同坡向的长白落叶松木材的大多数纤维形态指标和物理、化学特征指标存在显著的差异;采用综合评分法对不同坡向长白落叶松木材的制浆造纸性能的综合比较分析得出:半阳坡的长白落叶松用作造纸材较好。

Using Larix olgensis wood with different slope directions as testing materials, the authors determined the anatomical characteristics of wood fibers ( including tracheid length, tracheid diameter, wall - indiameter ratio, fibril angular and tra-cheid length-width ratio) , the physical characteristics (including growth -ring width, growth rate, late wood percentage and density) and chemical characteristics(including the contents of holocellulose, lignin and pitch, 1% NaOH extrac-tive) . The results show that there are distinct differences between most of anatomical, physical and chemical indexes. By comprehensive coordinate, comprehensive analysis of paper - making properties for Larix olgensis wood on different slope directions shows that Larix olgensis wood on half - sunning slope is suited for paper - making.