Platycladus orientalis is one of the important afforesting tree species in Beijing mountainous area,accounting for about 25.96％ of the total area of plantations in Beijing.However,some problems occurred in P.orientalis plantations,such as excessive density,and slow growth rate,and serious differentiation during tree growth.In this paper,based on the forest vegetation simulator (FVS) system of America,the tree diameter growth model,height growth model and volume computation model were constructed and optimized by multiple linear and non-linear regression analysis.The models established could simulate the growth of P.orientalis plantation to provide a basis for its scientific management.The examination results indicated that the three optimized models had good fitting and expected results.%侧柏(Platycladus orientalis)人工林面积约占北京市森林总面积的25.96％,是北京山区造林的主要树种之一,但存在密度过大、树木生长过慢、树木生长分化严重等问题.基于美国FVS(forest vegetation simulator)系统,通过多元线性回归、非线性回归法构建和优化侧柏直径生长量模型、树高生长量模型和材积计算模型,来模拟侧柏人工林的生长过程,为科学经营侧柏人工林提供依据.检验结果表明,优化的3个模型拟合效果和预估效果良好.
展开▼
