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在费吉尼亚喜鹤山,通过抽取幼龄人工松林内的工6个一般硬阔叶树种,建立了茎干横断面积对叶面积的预测方程。每一树种的叶面积(总的表面积)与茎干的横断面积都存在着线性关系,其相关系数(R~2)的变化范围是从0.87到0.98。斜率系数的变化范围为0.336—0.833 m~2/cm~2,而且对于所有树种,其差异较大,但是红栎和星毛栎两个树种之间差异不大。种间的比较说明实生起源的植株与萌生起源的植株之间的斜率没有明显的差异。
In Heshan, Virginia, the prediction equation of leaf area of stem cross-sectional area was established by extracting six hardwood species from young artificial pine forests. There was a linear relationship between the leaf area (total surface area) and the stem cross-sectional area of each species, and the correlation coefficient (R ~ 2) varied from 0.87 to 0.98. The slope coefficient ranged from 0.336 to 0.833 m ~ 2 / cm ~ 2, but the difference was significant for all tree species, but there was no significant difference between the two tree species. The comparison between species shows no significant difference in the slope between plants of true origin and those of origin.