Ecological Problems Research of Capital city -Ulaanbaatar

An estimation of the level of pollution in an urban territory using methods of ecological cartography is made for the first time in Ulaanbaatar city. We consider the basic situations of modeling the distribution of gas and aerosol pollution depending on an arrangement of sources of pollution and under influence of wind flows in the area. Pollution of the ground surface and its penetration to depth is shown to depend on the relief of the district and the intensity of rain.