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对伊春林区天然阔叶混交林中黄菠萝、胡桃楸和水曲柳3个树种在桃山、南岔、翠峦、上甘岭和新青5个自然分布区内的群落结构的差异显著性进行比较分析,并对其相互关系进行了研究。结果表明:桃山林业局3个树种在树高、胸径因子上占有明显优势;树高与胸径的相关系数是0.875,呈显著正相关;树高与胸径回归方程的拟合优度最高达0.825,回归方程的最佳拟合函数是三次函数。
The community structures of three species of yellow pineapple, Juglans manshurica and Fraxinus mandshurica in the natural broad-leaved mixed forest in Yichun were significantly different in the five natural distribution areas of Taoshan, Nantu, Cuilan, Shangganling and Xinqing Comparative analysis, and its relationship between the research. The results showed that the tree species of Taoshan Forestry Bureau had obvious advantages in tree height and DBH. The correlation coefficient between tree height and DBH was 0.875, which showed a significant positive correlation. The fitting goodness of regression equation between tree height and DBH was up to 0.825, The best fit function for the regression equation is a cubic function.