MAP DEVELOPMENT AND CREATION FOR ECOLOGICAL COMPONENT OF GIS ON THE OIL-FIELDS
V.A. Malinnikov, M.C. Milovanova
The main task of the having been carried out research activities was a map material development and creation for ecological component of GIS, on the oil-field. The aim was to investigate the dynamics of changes in ecological situation on the area of the oil-fields, and also nearby oil wells.
During the maintenance of the oil-field, environmental risk is considered to be determined by the probability of disturbance the top-soil, surface and subsurface waters in the event of an oil outflow; quick development of dangerous cryopedological processes as the result of damaging the permafrost; air pollution, that is caused by different emergency conditions.
That is why integrated local environmental quality monitoring during the maintenance of the oil-field should include such observations as: observation of the surface and subsurface waters, air, vegetative soil, top-soil, hydrobiota and bottom sediment, exogenous process, and so on.
Observations include measurements of qualitative indexes and quantitative indexes of environment, which are presented in the full paper, in the affected zone and the background area.
The main purpose of the ecological component of GIS is the systematization of data in one especial system; about the dynamics of changes in the levels of polluting substances in air, water, surface and subsurface waters, top soil, vegetative soil, bottom sediment on the area of the oil-field; about the dynamics of changes in hydrochemical surface waters characteristics, about top soil condition, on the oil-field area.
In this paper the results of the integrated analysis of the “Varandeiskoe” oil-field area are shown, during the period from 1999 to 2001 years.
On the basis of the research activities and integrated analysis the following thematic maps have been compiled: the map of disturbance top-soil, soil map, map of the vegetative soil, map of the integrated soil pollution, integrated map vegetative soil pollution, engineering-geological zoning map, map of landscape distinguished elements and migration of the polluting substances, determined by the hydrological factors, and so on.