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针对当今高度重视生态文明建设,以及对林业量测精准的要求,提出一种利用电子经纬仪测量立木材积的方法:通过采集树木的胸径、地径,以及电子经纬仪与树干任意处左右两侧切线的夹角,根据区分求积法原理精准计算立木材积。并对影响该方法精度的因数(观测距离、区分段个数)进行分析。研究表明,该方法量测材积精度高达92%以上,且最佳观测距离应与树高相当,2 m左右为最佳区分段高度。该方法可替代伐倒树木测量材积的方法,在森林计测中有着广泛的应用前景。
In order to meet the requirement of ecological forestry construction and forestry measurement accuracy, a method of measuring standing timber volume based on electronic theodolite is put forward. By collecting the DBH, the diameter of the tree and the tangent of the electronic theodolite and the left and right sides of the trunk Angle, according to the principle of differential quadrature accurate calculation of standing timber volume. The factors affecting the accuracy of the method (observation distance, number of segments) were analyzed. The results show that the accuracy of this method is up to 92%, and the best observation distance should be the same as the height of the tree, and the optimal section height is about 2 m. This method can replace the method of measuring the volume of trees by cutting down trees and has a wide range of application prospects in forest measurement.