The effect of trees isolation on mossy pine forest growth when cutting trees of productivity classes IV and V

Abstract

Due to the fact that there are still some contradictory viewpoints on the matter of increasing of forest total productivity by cleaning cuttings the given research has been done. The forest total productivity is made up of natural mortality as well as the volume of intermediate and final forest cuttings. It is impossible to indentify correctly the forest trees reaction of different productivity classes when a cleaning cutting has been carried out. Taking into account all facts mentioned above, a special permanent sample forest plot was laid in 1977 by the researchers of forest Silviculture department of the Belarusian State Technological University. The sample plot is represented by a 30-years pine mossy forest stand in Negoreloe experimental forestry enterprise. Based on the data from the permanent sample plot the cleaning cutting effect on productivity of pine mossy forest stands, and the process of their forming when one sampled and cut down trees of different productivity classes has been researched.