Abstract
Taiwania cryptomerioides is a quite important endemic species in Taiwan, and is the most abundant species in plantations in the Liouguei Experimental Forest, southern Taiwan. Using the concept of compatibility and numeric equivalence among stand-level attributes, this study established a growth and yield stand simulator for Taiwania plantations in the Liouguei area. Based on data from permanent plots of Taiwania plantations in the experiment forest, the components of a growth and yield model such as diameter, tree height, stand density, and stand structure modules were separately fitted in sequence and then integrated, and finally computer software (TCSIM) was coded to implement the integrated growth and yield simulator. As an adjunct to the stand-level equations, compatible stand/stock tables were derived by solving for the parameters of the Weibull distribution from attributes predicted with the stand-level equations. The results indicated that the goodness of fit for all equations were good (R2 > 0.82) except for the tree density equation and basal removal function. By inputting the current stand age, tree density, basal area, projection length, and management options into TCSIM, dynamic changes for a given stand can effectively be evaluated.