遗传规划在林分生长模拟中的应用研究

Research on genetic programming application in stand growth simulation

本研究在华北落叶松林分平均胸径和平均树高原有只以树龄为变量的基础上增加了立地指数和植林密度因素,采用遗传规划技术进行数据拟合,获得了较好的理论生长方程,新的多元生长方程为华北落叶松生长模型提供了高精度、强适用性的生长函数。

In the past, the stand mean diameter at breast height and stand mean tree height growth functions of Larix principis-rupprechtii Mayr were primarily based on the age of tree. This paper adds two more factors, Site Index and Afforestation Density, to the growth functions by using the Genetic Programming to simulate and get the better theoretical growth functions. New multiple growth functions are identified for Larix principis-rupprechtii Mayr growth models supplying high-accuracy and strong- applicable growth function.