The maximum increment of stem diameter was at bottom, diminished up to branchheight, then increased to crown.
人工林树干直径增量以地径处最大，向上逐渐变小，从枝下高处又开始增大，直到冠部。
2
The variation of two-way tensile stress, strain distribution and branchheight in the axial compressive bulging and compound bulging were compared respectively.
分别比较了轴向压缩胀形和复合胀形中管件支管顶部双向拉应力、应变以及支管高度等指标的变化。
3
Under branchheight has direct impact on woods growth and trunks form, so dynamic model established with under branchheight can reflect the growth of woods and stands.