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›› 1994, Vol. 30 ›› Issue (3): 247-252.

• 论文及研究报告 • 上一篇    下一篇

密度指数与林分测树因子数学模型及应用

刘君然   

  1. 内蒙古根河林业局,额尔古纳左旗022350
  • 收稿日期:1992-12-07 修回日期:1900-01-01 出版日期:1994-05-25 发布日期:1994-05-25

ESTABLISHMENT AND APPLICATION OF THE DENSITY INDEX AND MATHEMATICAL MODEL OF FOREST INVENTORY FACTORS

Liu Junran   

  1. Genhe Forestry Bureau Inner Mongolia 022350
  • Received:1992-12-07 Revised:1900-01-01 Online:1994-05-25 Published:1994-05-25

摘要: 以落叶松(Larix gmelinii Rupr.)天然林标准地为材料,选取30块大样本标准地,通过N=aD(-b)得出林分测树因子数学模型。G=aSDIb(H-1.3)c式为密度指数、树高与断面积模型;以Y=aSDIbXc式为密度指数与直径、株数、断面积的模型。模型可用于编制树高标准表、直径标准表、密度标准表以及密度控制图等。

关键词: 密度指数, 林分测树因子, 数学模型, 可变密度收获表, 密度标准表, 密度控制图

Abstract: Through the formula, N=aD-b, two mathematical models were established with inventory factors based on 30 plots sampled in the natural stands of Larix qmelinii Rupr.(1),G=aSDIb(H-1.3)c and(2),Y=aSDIbXc where S for stand; D,density;I,indexl H,tree height and X,the number of stems.These models could be used to generate the standard tables for tree height, dbh, stand density and density control map.

Key words: Density index, Inventory factors, Mathematical model, Changeable density-yielding table, Density control map