Pilodyn在青海云杉活立木基本密度预测中的应用

利用Pilodyn对青海云杉活立木南北方向进行探测,室内测定青海云杉木材各基本密度和早晚材管胞长,对青海云杉南北向Pilodyn值与木材各基本密度、早晚材管胞长、胸径间相关关系进行统计分析.结果表明.青海云杉Pilodyn值南向平均值为26.3 mm,北向平均值为27.3 mm,南北向Pilodyn平均值差异不显著,北向Pilodyn值与胸径间相关关系显著,青海云杉南北向Pilodyn值与整株木材基本密度均呈极显著的负相关,而与早晚材管胞长间都没有显著的相关关系.整株木材基本密度对青海云杉南向Pilodyn值的贡献率最大为60%.整株木材基本密度对北向Pilodyn值的贡献率最大为46%.

Application of Pilodyn to assessment of wood basic density of standing trees in Picea crassifolia Kom

The living tree of Picea crassifolia Kom was penetrated by Pilodyn in both south and north directions in the field. Every wood basic density and early/late wood tracheids length of increment core were menstruated in door. The results of analysis of Picea crassifolia Kom Pilodyn determined item, every wood basic density of increment core, early/ late wood tracheids length, breast diameter, showed that the average of the Pilodyn determined item of Picea crassifolia Kom was 26. 3 mm in south direction,27. 3 mm in north direction, and the average of the Pilodyn had little disparity. The north Pilodyn determined item had significant correlation with breast diameter, the south and nouth Pilodyn determined item both had extremely significant negative correlation with the wood basic density. The south and nouth Pilodyn determined item both had no significant correlation with the early/late wood tracheids length. The biggest contribution rate to the south Pilodyn determined item is the wood basic density (60% ) , and the biggest contribution rate to the north Pilodyn determined item is also the basic wood density (46% ).