不同种源白桦木材密度和生长轮宽度径向变异模式  

The Radial Variation Patterns of Wood Density and Ring Width in Different Betula Platyphylla Provenances

作　　者：郭明辉[1] 鲁英 王万进 崔永志[1] 

机构地区：[1]东北林业大学,哈尔滨150040 [2]黑龙江省林业勘察设计院

出　　处：《东北林业大学学报》1999年第4期29-32,共4页Journal of Northeast Forestry University

基　　金：国家"九五"科技攻关专题

摘　　要：对５个种源以及不同海拔高度和不同种植密度的白桦木材生长轮密度和生长轮宽度径向变异模式进行了研究。结果表明：①各种源木材生长轮密度和生长轮宽度径向变异趋势基本相同．种源间生长轮密度的平均值差异显著．吉林露水河地区．木材生长轮密度最大．其次为内蒙古金河；生长轮宽度大小排序为新宾、凉水、露水河、帽儿山、金河。②木材生长轮密度在海拔高度４６０～６５０ｍ范围内呈正相关．生长轮宽度呈负相关：③木材生长轮密度在不同种植密度２ｍｘ３ｍ、３ｍｘ４ｍ和４ｍｘ４ｍ范围内呈负相关。生长轮宽度呈正相关；④不同海拔高度和不同种植密度对木材生长轮密度的影响。在生长轮宽度和生长轮密度变异曲线平均水平高低两个方面起作用。The radial variation patterns of wood ring density and ring width of five white birch provenancesxvere studied in different planting density and altitude. The main results obtained are' the generaltrends of the ring density and ring width profiles of the trees were similar. while there existed a significant difference in average ring density and ring width among provenances. The ring density was thebiggest in Lushuihe of Jinn province, next in Jinhe of Mongolia. the sequence of ring width was Xinbin>Liangshui >Lushuihe >Maorshan >Jinhe. the ring density was positively correlated and the ring widthwas negatively correlated with altitude within 460 ~ 650 m in Jinn Province. @ the ring density wasnegatively correlated and the ring width was positively correlated with planting density of 2 m x 3 m.3 m x 4 m and 4 m x 4 m in Heilongjiang province. planting density and altitude influenced averagering density in two aspects of the average level of the ring density variation curves and the ring width.

关 键 词：白桦 生长轮密度 生长轮宽度 径向变异 种源 

分 类 号：S792.153[农业科学—林木遗传育种] S781.31[农业科学—林学]