Simulation and Research on the Growth Regularity of Quercus acutissima Plantation
Investigation was conducted on the growth regularity of Quercus acutissima in a 27-year-old plantation located in Liangfengjiang National Forest Park,Guangxi,China.Stem analysis method was adopted to examine the dynamic changes of different variables,such as tree height (H),diameter at breast height (DBH),volume,and age (T).Linear regressional model was adopted to examine the relationships among variables.The results showed that several cross were points presented in the curves of average and successive growth of H and DBH,and wide variations were observed.However,the individual tree volume growth curve exhibited a rising trend during 27 a,showing good growing potential.The growth curves of different variables demonstrated that the first 4 years were the fast growing periods.The values of R2 of the simulated models were over 0.9 with high test precision.H and DBH growth models were optimal Korf equation,and the optimal model of individual tree volume growth was Kanpaizi equation.It was concluded that Q.acutissima plantations in the forest park maintained a steady growth trend in 27 years,the trees grew rapidly in their initial stage.The volume growth had not reached its full mature stage,growth potential still existed.The fitting models had high precision,and they could be applied to the practical production.
Quercus acutissimaplantationgrowth curveoptimal growth model
国家科技期刊平台
NSTL
万方数据
维普
