日本落叶松的生长变异及早期预测的研究  

GROWTH VARIATION AND EARLY SELETION OF LARIX LEPTOLEPIS

作　　者：刘桂丰[1] 杨书文[1] 胡尔贤 胡新民 孙群峰 刘庆民 

机构地区：[1]东北林业大学 [2]辽宁抚顺市林业局 [3]辽宁抚顺县林业局 [4]清原县林业局 [5]新宾县林业局

出　　处：《东北林业大学学报》1990年第S2期83-88,共6页Journal of Northeast Forestry University

摘　　要：本文是根据日本落叶松(Larix leptolepis (sieb. et Zucc) Gord)人工林129株(年龄在40a以上)单株树干解析材料所作的生长变异及早期预测的研究,结果表明:树高、胸径和材积的生长变异初期分化激烈,10a以后的分化渐趋于平缓。从树高、胸径和材积等的幼—熟(早—晚)期相关看也是10—40a达到极显著水平,而且以选择效率看10a也处于效率分布的峰顶。所以,确定10a为最佳早期选择年龄。Growth variation of Larix Teptolepis (Sieb. et Zucc) and its early selection method were studied on th'e basis of analysis to 129 trees (above 40 year old) from several plantatioh stand. the results indicated that the growth variation of height, DBH and volume are very acute in the early day and become more and more moderate after ten years. The juvenile-mature correlations of height, DBH and volume are significant at the ages 10 to 40. And the peak of selection efficiency curve occurs at age 10. Thus, the age 10 is determined as the best age for early selection.

关 键 词：日本落叶松人工林 生长变异 幼—熟龄相关 最佳选择年龄 

分 类 号：S7[农业科学—林学]