Assessment of Stand Thinning Model under the Integrated Whole stand Growth Model System

The basal area growth model under the integrated whole stand model system is tested based on the permanent plots of Chinese fir (Cunninghamia lanceolata) in Dagangshan Experiment Bureau,Jiangxi Province.The results showed that the basal area growth model is suitable to both the free growth and thinned stand.The growth process for a stand,particularly for the thinned stand,can be fitted and predicted by using integrated whole stand growth model system so as to provide some helpful suggestions.As a competition index,crown competition factor can be used to determine the growth phase of a given stand.