林木干形的生长受多种因素的影响,树木的形状实际是许多相互作用的因子的“数量”变化。除立地条件、气候、林分密度及造林树种选择外,在经营过程中,人为的修枝抚育是影响林木干形的重要因素。因此,研究林分修枝抚育对林木干形的影响,可为培育饱满通直的林木干形,提高木材质量,提供理论数据。 1986年11月,对草原林场1968年栽植的人工落叶松纯林进行了调查。该林分位于河北省 The stem-shaped growth of trees is influenced by a number of factors, and the shape of the tree is actually the “amount” of many interacting factors. In addition to the site conditions, climate, stand density and tree species selection, man-made pruning and tending are important factors affecting the dryness of wood in the course of operation. Therefore, studying the influence of stand trimming and tending on the dryness of forest can provide theoretical data for fostering full dry woody forest and improving the quality of wood. In November 1986, a survey was conducted on pure Larch plantations planted in 1968 in steppe farm. The stand is located in Hebei Province