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在林业生产经营科研活动中,测定立木的任意部位直径是项很棘手的工作。即使使用较为先进的测树仪器,在实际测量过程中往往由于林分通透性、地形变化等因素制约而得不到理想的测定精度。因此,在进行立木造材、材种出材量计算及确定林分的工艺成熟方面造成了一定的困难。为寻求一种切实可行的估算立木任意部位直径的方法,本文通过对落叶松人工林立木伐倒实测数据的整理和分析,采用
In the forestry production and management research activities, the determination of the diameter of any part of standing wood is a very difficult task. Even with the more advanced tree-measuring instruments, the actual measurement process often due to the permeability of the forest, terrain changes and other factors not get the desired measurement accuracy. As a result, some difficulties have been caused in making stumpage, calculating timber output, and determining the maturity of the stands. In order to find a feasible way to estimate the diameter of any part of stand, this paper adopted the measurement and analysis of the measured data of stand larch in Larch plantation,