摘要
以幼树地径为基准变量 ,记为 Y,以株高、枝下高、平均冠幅为说明变量 ,分别记为 X1、X2 、X3 ,建立估测地径三元线性模型。
Ground diameter of seedling as the basic variable marked with Y,and height,under branch height,average crown as the following variable marked with X 1,X 2,X 3 respectively,so the three way liner model for estimate ground diameter was established.
出处
《江西林业科技》
2000年第S1期30-31,共2页
Jiangxi Forestry Science and Technology
关键词
桤木
幼树地径
增长模型
Alnus cremastogyne
Ground diameter of seedling
Increase model
