formation of the spatial ranges
The basis of the spatial parameters of the systems to detect clusters of populated areas - the marginal cost of time pendulum migrants on the availability of large urban centers, is 1,5-2 hours and fit approximately within the boundaries of the 50-kilometer radius distance (beyond 1.5-2-hour availability of labor pendulum connection even with the largest population, including sverhmillionnymi on the number of inhabitants of the city centers, almost negligible). Other signs to identify areas of gravity, such as the development of territorial-industrial, recreational, communication, engineering, infrastructure, etc., should certainly be taken into account, but their effect on the determination of boundaries is indirect.
Thus, in some studies of group systems, combining a large city and gravitate to it populated places, was isolated by applying a series of different-sized territorial units, within which are formed interconnected functioning of the city-center infrastructure: industrial, social, engineering, transportation, recreation, etc. However, the development of each function and the formation of the spatial ranges of their display to a different extent due to the peculiarities of the historical process of formation of a large city and resettlement areas, landscape and natural conditions, areas of economics and production base, emerging and expanding various resource constraints, etc.
mismatch areas is often compounded by territorial multidirectional development of certain functions, such as economic and production-related raw materials, transport and geographic conditions, and recreation, depending on the particular nature of the situation affecting the placement of holiday destinations.