论文部分内容阅读
由于树木生长模型是构建林分生长模型的基础，因此国内外许多林业研究者给予了极大关注并发表了许多著名的生长模型。从研究结果上看，各种模型都有一定的适应性；而在生物学意义上，ＶｏｎＢｅｒｔａｌａｎｆｆｙ模型的解释更令人满意。分析结果证明，该模型拟合性好，无论直径、树高，还是材积，相关指数的平方（Ｒ２）均在０．９９以上，其平均平方残差（ＭＳＳＤ）直径为０．１５２０，树高为０．０６５２，材积为０．０００００７，而且具有明显的生物学意义。
As the tree growth model is the basis for building the stand growth model, many forestry researchers at home and abroad have given great attention and published many well-known growth models. From the results of the study, all kinds of models have some adaptability; while in the biological sense, VonBertalanffy model is more satisfactory. The results of the analysis show that the model has good fitting properties. The square of the correlation index (R2) is above 0.99 regardless of the diameter, the height of the tree or the volume. The average square residual (MSSD) diameter is 0.1520 and the height 0.0652, the volume of 0.000007, but also has obvious biological significance.