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对32株不同年龄、胸径的杉木样木的153根样枝进行回归分析表明,杉木枝条枝材重与枝基径之间相关紧密,而枝条叶量与枝径间相关并不显著;杉木全株枝量、叶量与冠基部直径间存在极为显著的相关关系;胸径与树高或冠比率(冠长/树高)相结合是杉木枝、叶量良好的估测因子。根据上述关系编制了杉木单林枝、叶生物量表,并提出估测杉木林分中立木枝、叶量回归方程:W_b=0.022568359D~(3.1427)·H~(-1.2466);W_f=0.13542536D~(2.9235)·H~(1.6995)。
The regression analysis of 153 shoots of 32 Chinese fir-like woods with different ages and DBHs showed that there was a close correlation between the branch weight and branch diameter of the fir branches, while the correlation between branches and branch diameters was not significant. There was a significant correlation between the number of branches and the amount of leaves and the diameter of the base of the crown. The combination of DBH and the ratio of tree height or crown length (crown length / tree height) was a good predictor of the number of fir branches and leaves. According to the above relationship, the single-branch and leaf biomass scales of Chinese fir were compiled and the regression equation of estimated branch and leaf amount of Chinese fir was: W_b = 0.022568359D ~ (3.1427) · H ~ (-1.2466); W_f = 0.13542536 D ~ (2.9235) · H ~ (1.6995).