ИСТИНА

A number of conceptual positions assessment and prediction of permafrost-ecological conditions under economic development in terms of northern geosystems sustainability to the manifestation of dangerous cryogenic processes are described. The assessment procedure includes a selection of main permafrost and bioresource factors, methods of their comparison, ranking anthropogenic pressure, calculating the integral coefficients of development hazard for the landscape calibration, evaluation mapping. The formation of different ecological situations based on the consideration of two factors: the degree of mechanical damage of the topsoil cover and the landscape resistance to these types of damage. During the environmental assessment the following data are used: the area affected by the processes, the rate of process development and attenuation, the degree of natural landscapes disturbances, the threat to the functioning of engineering structures. The various combinations of dangerous cryogenic processes within the permafrost zone of Russia were analyzed.