回归分析不仅在许多科学领域和工农业生产中具有极其广泛的使用范围,而且在林业科学研究和生产工作中也占有重要的地位。例如,林木生长与立地因子的关系,产果量与不同类型的母树的关系等都可以通过回归方程来预测。然而回归分析的计算工作量,随着元数的增加而显著地增加,这对用 Regression analysis not only has a very wide scope of use in many scientific fields and industrial and agricultural production, but also plays an important role in forestry scientific research and production. For example, the relationship between tree growth and site factors, the relationship between fruit yield and different types of tree can be predicted by the regression equation. However, the computational workload of regression analysis increases significantly with the increase of the number of elements