[Estimation of geomorphological risk and human impact on landforms of the Belarus Poozerie]

The main idea of the work is to examine ecological aspects of the Belarus Poozerie Province and to realize a methodical estimation of the geomorphologic areas from the position of ecological-geomorphologic analysis. In the course of investigation, positive and negative ecological factors of the geomorphologic complex are determined. The estimation of geomorphologic areas of the Belarus Poozerje Province is given, it is based on the determination of functions of landforms in the system of "nature - economy - population". The estimation is divided into two parts: the determination of human impact on landforms and the determination of the role of external geomorphologic phenomena as a factor of influence of natural land-forms on man and his activities. Within the limits of either part of the system diagnostic parameters are worked out. For the first part they are as follows: coefficient of technogenic transformation of landforms, the area of building zone, safety afforests and the area of mining works. Within the limits of the second part the role of external geomorphologic phenomena (plane washing, linear erosion, mortification of river-bed, gravitational processes, active fault, potential seismological danger) are analyzed. As a result of the estimation of the system of diagnostic parameters using modern geographic informational systems and cluster analysis integral schemes of human impact on landforms and the role of external geomorphologic phenomena were established. The results of the investigation allow us to approach to rationalization of nature management, planning and designing new buildings, forecasting unfavorable geomorphologic phenomena for man and his activities more effectively. Modern geographical informational systems (GIS) are of great importance for this work. They allow us to visualize, analyze, model and forecast geomorphologic conditions. All spatial data of the estimation of geomorphologic areas are integrated into GIS-project. This modern geoinformation system includes vector figures and databases