林分结构对人工林红松木材材质的影响

对不同林分结构（纯林、混交林和三株一从）的人工林红松（Pinus koraisensis)木材材质进行测试和分析，结果表明：红松木材生长速率、生长轮宽度、晚材率差异不显著，红松木材的管胞长度，纤丝角、生长轮密度、干缩率和差异干缩、绝大多数力学性质指标差异显著，采用综合坐标法，对不同林分结构的林分木材材质进行品质评定，综合性能和建筑材评定的优劣顺序为混交林、纯林，三株一丛的林分；纸浆材的优劣顺序为混交林、三株一丛，纯林的林分。

The Effect of Stand Structure on Wood Quality of Pinus koraiensis Plantations

The wood properties of Pinus koraiensis for different stand structures (pure forest mixed forest. cluster of three trees) were measured and analyzed. The results showed that their variances of growth rate. growth- ring width and late wood percentage are not remarkable; those of tracheid length. fibril angle. growth-ring density. shrinkage ratio. differential shrinkage and many mechanical properties are remarkable. By comprehensive coordinates. the wood qualities at different stand structures were evaluated. the preferential order of comprehensive properties and structural wood are mixed forest. pure forest. cluster of three trees. The preferential order of pulpwood are mixed forest. cluster of three trees. pure forest.