Development of the forest stand and its constant

In Perm Krai in models of growth of fir-tree forest stands stable indicators - the volume of kroner observed at forest stands with small initial density of 1.0-1.3 thousand pieces/hectares, and in models of any initial density - taper a trunk (the relation of average diameter to average height of a forest stand minus 1.3 m) which are invariable only within models from 45-50 and till 120 years are found. The concept of a biofield and the epigenetichesky reasons of a phenomenon of a biological constant, and also diametrical changes of productivity of kroner in rare and dense models at a boundary in 40 years is discussed. Validity of a hypothesis of I.S. Marchenko about existence of a biofield of a forest stand which can define development of all community of plants is confirmed.