毛白杨无性系林木生长动态分析  

GROWTH DYNAMICS FOR POPULUS TOMENTOSA CLONES

作　　者：符军 高建社 

机构地区：[1]陕西省林业科学研究所

出　　处：《陕西林业科技》1995年第4期5-10,共6页Shaanxi Forest Science and Technology

摘　　要：用Ｌｏｇｉｓｔｉｃ方程和Ｒｉｃｈａｒｄ方程分段描述８个毛白杨无性系９年生、１２年生林木的生长动态，揭示了不同无性系生长型的差异，预测了１５年时的生长量。不仅为选择提供了科学依据，对速生丰产林经营也具有重要的指导意义。研究表明用不同曲线方程分段描述林木生长动态优于使用单一曲线。The growth dynamics of 8 Populus tomentosa clones for 9-year-old and 12-year-old trees were discribed by Logistic model and Richard function sectionally.There existed significant different among growth types of clones.The increment of clones in the 15th year is predicted by the model.The results are not only help for selection but also for managing fast-growing and high-yigld forest.Using different equations sectionally is better than using one equation to describ tree growth.

关 键 词：毛白杨 无性系 生长动态 生长型 生长预测 

分 类 号：S792.117[农业科学—林木遗传育种]