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两种测高器的改良使用
引用本文:王宝钦,赖惟亿.两种测高器的改良使用[J].福建林学院学报,1992,12(1):75-82.
作者姓名:王宝钦  赖惟亿
作者单位:福建林业学校 (王宝钦),漳平市赤洋林业采育场(赖惟亿)
摘    要:对勃鲁莱测高器不改变仪器本身,只改观测高度值为角度值,变换计算公式,即可避免复杂林地阻碍仪器使用的缺陷,可以任选测点测得树高。对克里斯登测高器只作简易变更,用法不变,即可使观测值精度提高100倍,观测值增加231个,且具有校核作用。经检验,两种测高器精度均达98%以上。

关 键 词:测高器  树梢角度α  眼高角度β  ac间距  直列  横栏  树高刻划  缺口  薄片

The Improvement and Use of Two Kinds of Hypsometers
Wang Baoqin.The Improvement and Use of Two Kinds of Hypsometers[J].Journal of Fujian College of Forestry,1992,12(1):75-82.
Authors:Wang Baoqin
Institution:Fujian Forestry School
Abstract:There are two ways of improving on the Hypsometers. First don't alter the instruments of Blume-lejse hypsometer, just change the height reading to angle reading and vary the formulas, and the hypsometer can be used at the complex forest land just tne same, and we can willfully choose survey point to mensurate the tree height . Second , a little change is made in Christen hypsometer, but the operating way remains unchanged , and the precision of observation value is increased by 100 times, with 231 more observation values obtained. The hypsometer altered in this way has the proofread function. The test shows that both precisions of two hypsometers reach above 98%.
Keywords:Hypsometer  treetop angle  eye-height angle  ac-distance  perpend-icular column  horizontal column  a slice of matchbox  breach  the graduation of tree height  
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