Compiling of one-variable volume table of standing timber of poplar tree
The data for establishing stem volume table of poplar tree were collected from 329 wood samples of the poplar tree plantations in Anhui Province.Based on the information of 300 wood samples,the parameters,the remaining standard deviation,relevant indexes of one-variable volume model were calculated by nonlinear equations Mai Kuate computation.According to the relevant indexes and the residual standard deviation,one-variable volume model of the poplar tree was given.The best one-variable volume model is V=0.0001413d2.4463.The average relative error,the average Absolutely relative error and systematic error of the binary volume table were calculated based on the 29 wood samples,and the results are-0.75%,14.55% and 1.62% respectively.Each error of the volume table satisfies with the need of forestry.