The thesis analyzes the advantages and drawbacks of the two kinds of algorithms and proposes a mixture model which introduces the feature driven methods (K-D Forest) into vocabulary tree.
本文在分析了两类方法的优缺点后，提出了将特征驱动的方法(K - D森林)引入词汇树模型的混合模型。
The biomass of larch plantation of different site conditions and forest ages could be estimated by incorporating the individual tree biomass model and diameter distribution prediction model.
结合单木生物量模型和林分直径分布预估模型可以对不同立地、不同林龄下落叶松林分各组分的生物量进行预测。
Result shows, This competition index is suitable to Chinese fir man-made forest, and individual tree growth model accords with the demands of accuracy, it can be used to estimate growth of stands.
结果表明：该竞争指标对杉木人工林适用，所建立的单木生长模型符合精度要求，可用于预估林分生长。
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