Development of Individual-Tree / Distance-Independent Growth-and-Mortality Prediction Equations for Pinus koraiensis Stands

摘要

The objective of this study was to develop a set of stand growth equations for estimating crown ratio, potential diameter growth, modifier and mortality of Pinus koraiensis forest stands. The four equations are essential in interpreting the dynamic changes, over time, in timber inventory of forest stands. In order to infer the parameters of the equations, used were forest measurement data sets of 26,800 standing trees of 266 plots and 175 dead trees of 6 permanent plots. Test statistics indicated that fitness indices(F1) of modifier and mortality probability functions were 0.515 and 0.842, respectively. On the other hand, the fitness indices of crown ratio and potential diameter growth functions were 0.224 and 0.260, respectively, and relatively lower than those of modifier and mortality probability functions.