东北地区11种主要树种生长的最优模型选择

Selection of Optimal Growth Model for 11 Main Tree Species in Northeast China

树种生长过程模型的构建是林分生长和收获模型的重要组成部分。为了对东北地区11种主要树种生长过程进行数学模拟,选取4359株解析木基于经验和理论方程分别构建胸径、树高和材积最优生长过程方程并进行卡方检验。结果表明,幂函数、柯列尔方程、豪斯费尔德、复合函数、指数函数、对数函数、极值函数、S形曲线、舒马切尔模拟11种主要树种生长过程效果理想。本文所选出的最优模型适用于东北地区11种主要树种胸径、树高和材积生长过程的模拟与预测。本研究可为今后该地区林分收获预估提供一定的理论依据,并为研究林分最优生长奠定基础。

The construction of tree growth process model is an important part of stand growth and yield models.In order to carry out the mathematical simulation for the growth process of 11 main tree species,4359 analytical woods were selected to construct the optimal growth process equations of diameter at breast height,tree height and volume based on 25 empirical and theoretical equations,and the chi-square tests were carried out simultaneously.The results showed that power function,Rолясрfunction,Hossfeld,composite function,exponential function,logarithmic function,S-types and Schumacher function were the optimal models.The selected optimal models could be used to simulate and forecast the growth process of diameter at breast height,tree height and volume for 11 main tree species in northeast China.These models could provide a theoretical basis for the scientific management of stand growth and yield prediction and lay a foundation for studying the optimal growth of the stands.