利用三维激光扫描系统测量立木材积的方法

介绍三维激光扫描系统的组成及工作原理，并采用该方法对立木进行扫描，测量立木材积。与伐倒木实测数据进行对比，可以看出扫描数据完全能满足林业测量的精度要求，其扫描获得的立木材积数据完全可以替代传统方法测算的立木材积数据，使用立木模型建立材积表不再需要实地大量伐木，节省大量人力、物力及财力。应用三维激光扫描技术进行立木材积测定能较好的避免传统测定方法的不足，在未来的林业数字化测量中有广阔的应用前景。

Introduction of the Method of Measuring the Standing Tree Volume by Using the Three-dimensional Laser Scanning System

The composition and working principle of three-dimensional laser scanning system were introduced in this paper. Then the three-dimensional laser scanning system was used to scan the standing trees and to measure the standing tree volume. Compared with the measured data of the felled trees, it was indicated that the data obtained from scanning can completely meet the precision requirement of forestry measurement. The standing tree volume data obtained by scanning can completely take the place of standing tree volume data obtained by the traditional method. Therefore, the standing tree volume table established by the model did not need a large number of felling trees any more, as a result of which, a lot of human, material resources, and financial resources. The determination of the standing tree volume conducted by the three-dimensional laser scanning technology can avoid the disadvantages by the traditional method, which had wide application prospect in the future forestry digital measurement.