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在树干解析推断各年龄(龄级)树高的方法中,传统的“树高曲线法”将介于二个圆盘之间的某年的高度,均看成为上圆盘的高度,因而产生系统的正误差。成子纯先生提出的“修正法”,虽使误差有正有负,但误差绝对值并没有减少,其实质和“曲线法”相同,即未能考虑林木的生长变化,机械地用某一定高度来代替林木的实际高度,其计算结果似不能用以分析林木的生长过程。大量的材料证明:用绘制树干纵面图的方法来推断树高,具有科学依据,且简便、直观、准确,特别适用于杉木、马尾松等速生树种。
In tree trunk interpretation of the method of inferring the tree height of each age (age class), the traditional “tree height curve method” will be between two disks at a certain year height, are seen as the height of the disk, resulting Positive error of the system. The “amendment method” proposed by Mr. Cheng Zi-chun, though making the error positive and negative, did not reduce the absolute value of the error. The essence of the “correction method” is the same as that of the “curve method,” that is, failing to consider the growth and change of trees, mechanically using a certain height To replace the actual height of the tree, the calculation results can not be used to analyze the growth process of forest trees. A large number of materials prove that the tree height is deduced from the method of drawing the longitudinal trunk of the tree trunk, which has scientific basis and is simple, intuitive and accurate. It is especially suitable for fast growing tree species such as fir and masson pine.