当前位置: 首页 > 文章 > 通用材积方程形制的探讨——以内蒙古自治区为例 内蒙古农业大学学报(自然科学版) 2015 (2) 49-56
Position: Home > Articles > DISCUSSION ON THE SYSTEMS OF GENERAL TREE VILUME MODELS ——TAKING INNER MONGOLIA AS AN EXAMPLE Journal of Inner Mongolia Agricultural University(Natural Science Edition) 2015 (2) 49-56

通用材积方程形制的探讨——以内蒙古自治区为例

作  者:
杜昕;李钢铁;张明铁;曹扬
单  位:
内蒙古农业大学生态与环境学院内蒙古林业监测规划院;内蒙古农业大学林学院;内蒙古农业大学
关键词:
相对生长;材积方程;通用方程
摘  要:
以相对生长理论为基础,应用1stopt软件麦考林法(Levenberg Marquarat)与通用全局优化法(Universal Global Optimization)对比CAR模型、VAR模型、修改VAR模型三类材积方程的精度、并分析各类方程的特点,结果表明:VAR模型具有多解性,拟合结果需要选优;CAR模型准确性最低、两类VAR模型准确性相似,均可作为通用方程;并以修改VAR模型统一自治区各材积方程,取得良好的效果。
译  名:
DISCUSSION ON THE SYSTEMS OF GENERAL TREE VILUME MODELS ——TAKING INNER MONGOLIA AS AN EXAMPLE
作  者:
DU Xin;LI Gangtie;ZHANG Mingtie;CAO Yang;Inner Mongolia Agricultural University;Inner Mongolia Forestry Survey and Planning Institute;
关键词:
Relative growth;;tree volume model;;general equation
摘  要:
Based on the Relative Growth theory,parallel the precision of CAR. VAR. and Modified VAR Tree Volume Models by using Levenberg- Marquardt( LM- UGO) method of 1st Opt software,and analyze the character of three Volume Models. The results show that: VAR Model has multiple solutions,and need to select the best one among fitting results; CAR Model accuracy is the lowest、the two VAR Models have similar accuracy,can be used as general equation; and unified all the tree volume equations of Inner Mongolia Autonomous Region by using Modified VAR Tree Volume Model,achieved good results.

相似文章

计量
文章访问数: 9
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊