Distribution of trees according to biometric characters in natural and artificial young pine forests

The results of analyzing the density series of tree distribution according to diameter, height, and crown length in young pine forests of natural and artificial origin are presented. With an increase in stand density, the structure of natural cenoses (diameter, height, and crown length) was shown (using smoothing Pearson distributions χ²) to become uniform faster than that of artificial stands. General regularities of changes in the tree distribution by biometric characteristics related to density in the natural and artificial young pine forests were revealed. These regularities are applicable in young plantations of the same age group that are formed in similar forest types. They may be applied for predicting results when silvicultural measures are conducted by means of regulating forest density.