Krzywe bonitacyjne świerka pospolitego na siedliskach górskich

The aim of the study was to develop a site index model for mountain spruce stands. The research material contained the height growth data obtained from stem analysis of 95 trees. The collected material was used to calculate the parameters of four dynamic growth equations, which allowed to determine site productivity and predict height growth based on age and height of stands. The equation that best describes the height growth of the examined spruces was selected from among different solutions using statistical criteria for assessing the accuracy of fitting empirical data and biological realism. The developed model can be used to predict the height growth and determine the site index for mountain spruce stands.