Technology to Recover the Volume of Stolen Trees Based on Ground Diameter Form Height ——The case of Robinia pseudoacacia and Quercus acutissima

BIAN Cun-bao;LI Jian-hua;LIU Cheng-jie;College of Forestry/Shandong Agricultural University;Yantai Forest Resource Monitoring and Management Station;

Ground diameter form height;;volume of stolen tree;;Robinia pseudoacacia;;Quercus acutissima

It is important to estimate the volume of stolen trees accurately for the assessment of economic losses. Due to the fact that only tree stump was left after the tree was stolen, this study proposed a technique for calculating the stolen tree volume based on ground diameter form height. Firstly, to measure the ground diameter form height of trees around the stolen one which were similar to the stolen trees. Then to calculate the volume of stolen tree using the average ground diameter form height combined with the stolen tree's ground diameter. In this experiment, 24 plots of Robinia pseudoacacia and Quercus acutissima were investigated, and in each of the plots, 10 individuals trees were measured respectively. The data from the investigation were used to recover the volume of stolen trees. The results showed that the more sample trees used to measure the average ground diameter form height, the better the recovered results will be. When the number of sample trees increased from 1 to 4, the error of recovery volume can be controlled under 10%. Therefore, it is considered that this method is a practically useful technique for recovering the volume of stolen trees and its recovery error is controllable.