Simulation of Larix gmelinii tree volume growth based on random effect. Establishment of Tree Height Growth Model Based on Mixed and Nlmixed of SAS Linear mixed modeling of branch biomass for Korean pine plantation. A Stem Taper Model with Nonlinear Mixed Effects for Dahurian Larch Modeling Branch Diameter with Linear Mixed Effects for Dahurian Larch Empirical Analysis on Determinants and International Competitiveness of China‘s Wood-Based Panel Industry in Post-Crisis Era Testing and Comparing the Impact of Chinese Fir Provenances on Basal Area Growth Models