The structure and dynamics of microbial fillosfery and rhizosphere complexes of coniferous species of forest biogeocenosis of the Yenisey territory Siberia (on the example of Predivinsk forestry)

The object of research was the microflora of needles and rizosfer of a Siberian fir-tree of (Picea obovata), Scotch pine (Pinus sylvestris), a cedar pine (Pinus sibirica) growing in forest biogeocenoses of Predivinsk forestry (Bolshemurtinsky area). The age of trees was 30-35 years. The purpose of the work was to study the interfaced dynamics of formation of structure of microbic complexes of phyllosphere and rizosfer of different types coniferous in forest biogeocenoses of Siberia. In the research of dynamics of formation of epifit microflora of needles of Siberian fir-tree the maximum development of non sporous forms of bacteria in September connected with the termina-tion of active vegetation of plants and considerable decrease in their fitoncid activity was noted. The dynamics of the micelial mushrooms which were in minimum did not depend on temperature and hu-midity conditions during the vegetative period. The formation of epifit microflora of needles of an ordi-nary pine had the difference from the dynamics of a fir-tree. Here the maximum of development of non sporous microorganisms in June and September, i.e. connected with low fitoncid activity of an ordi-nary pine during these periods was registered. When forming epifit microflora of needles of a pine, it was necessary to consider negative impact on epifit of pathogenic microorganisms which show big antagonistic activity in relation to them because of a smaller fitoncid ability of needles. In the analysis of the number of rizosfern microorganisms, average for the vegetative period, on diagnostic environ-ments it was established that the maximum devel-opment of ammonifying bacteria (growth by MPA) comes to light in the soil control and under a cedar. The indicators of number of the microorganisms using mineral sources of nitrogen (growth on CMM), have the greatest value in control, and the smallest under a fir-tree. The maximum coefficients of a microbiological mineralization (CMM/MPA) were registered in a pine. These values of number and coefficients of mineralization testify to the im-balance of processes of synthesis resynthesis un-der these types of wood plantings. The maximum quantities of oligonitrofil bacteria were defined un-der a cedar, and coefficients of an oligotrof (Eshbi/MPA) have the greatest values under a fir-tree that is the evidence of a lack of batteries under these species of trees. In the comparative analysis of total number of microorganism’s rizosfer and phyllospheres of different types of trees were shown the following tendencies: outlines of dynam-ics of the total number for all species of the studied trees practically coincide during the vegetative pe-riod. It can be explained to that the "soils-trees-microorganisms rizosfer and phyllospheres" com-plex is an ecosystem which components are con-nected functionally and energetically. Such interre-lation and interdependence of components keep an ecosystem in the condition of homeostasis.