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根据林木的生长特点,根径、胸径和单株材积之间的关系,按树种组分别用线性、对数、乘幂、指数型、三阶二项式5种数学模型模拟林木的生长规律,找出林木根径、胸径和材积之间的关系,通过优化、筛选得到最佳模拟数学方程,利用林木根径计算单株材积。应用现代计算机编程技术(DELPHI编程语言),编制根径材积表软件。
According to the relationship between growth characteristics, root diameter, DBH and single plant volume, tree growth patterns were simulated by using five mathematical models of linear, logarithmic, exponential, exponential and third-order binomial. The relationship between root diameter, DBH and volume of forest was found out. The optimal simulation mathematical equation was obtained through optimization and screening, and the volume of single plant was calculated by root diameter of forest. Application of modern computer programming technology (DELPHI programming language), the preparation of root diameter volume table software.