THE POPULATION INDICATORS OF THE TYPOGRAPH BEETLE (IPS TYPOGRAPHUS L.) IN THE SPRUCE FORESTS IN THE ZONE OF THE CONIFEROUS-BROAD-LEAVED FORESTS

The object of investigation: the populations of the typograph beetles in the spruce forests of the coniferous-broad-leaved forests zones. The work is aimed at studying the variation of the population indicators and the role of the typograph beetle morbidity factors in the different phases of the gradation cycle to prognose the loci of its appearance. Traced has been the number of the gradation cycles of the typograph beetle. The survival and the leading factors of the typograph beetle morbidity have been studied, the variation of its population indicators has been investigated, and the possibility of their usage has been determined. Offered have been the indicators for the system of the forest-pathological inspection of the spruce plantings and the populations of the typograph beetle. The system of the inspection of the typograph consists the part of the "Instructions on the Inspection, Count and Prognosis of the Forest Trunk Vermins mass Multiplication" to be approved by the Federal Service of the Forestry of Russia. The field of application: the spruce forests of the coniferous-broad-leaved forest zones and the South of the taiga zone of the European part of the RussiaAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio