Environment, habitat and production activities of mankind. As a rule, the term “O. with. “refers to the natural environment; in this sense it is used in international agreements, including between the countries. Often, include elements that make up the built environment (residential buildings, industrial plants and other engineering structures). Natural area of distribution of the human species is determined by natural conditions, but with the development of social production and technology fields of human activity has grown significantly and almost covered the whole geographical envelope. Human society has significantly changed with the OS. in the process of economic development.

Human impacts on the OS with. becoming more pronounced, and it increased particularly sharply in the modern scientific and technological revolution. In varying degrees of change were all the natural components of the OS with. People are many types of domesticated animals and cultivated plants have established, but at the same time killed many wild animals (including dozens of species of mammals and birds) and destroyed the entire biosciences. The forests of Earth declined since the Neolithic at about 2 times, on-site natural vegetation appeared cultivated land, there were secondary forest and savannah, bush thickets, heath land, meadows. The face of the earth’s surface also significantly alter and engineering, aimed at transforming the river systems, the creation of channels, reservoirs, etc. When construction works and mining annually move huge masses of rocks.

The natural productivity of many landscapes as a result of human influence has increased dramatically, in areas with improved drainage, irrigation, shelter belts, and seats won from the sea, there were cultural landscapes. However, human intervention in the management of natural processes does not always bring the desired positive results, because difficult to properly assess the long-term consequences of such exposure. Violation of at least one of the components of natural causes, due to linkages among them, to restructure the existing structure of natural-territorial complexes. Thus, deforestation, plowing the soil, excessive grazing are the causes of congestion disturbance of the soil, changes in water balance, development of erosion, formation of dust storms, sand, water logging, etc.