The thesis is devoted to the real identification of the geoecological condition of the Drohobych urbo-system based on situational constructive geographic research with the aim of substantiating the measures aimed at optimizing the ecological condition of the city. Different approaches to the definition of the concept of the urbo-system and its geoecological state are presented. Different approaches to the estimation of geoecological state of urbo-systems are described. The methods of research of geoecological state of urbo-systems are analyzed, their typing and specification concerning certain ecologically oriented tasks are carried out.
The influence of physic geographical conditions of the territory of the Drohobych urbo-system on its structural organization is described. Based on the analysis of the retrospective and modern landscape structure of the city and the analysis of the formation of the structure of its functional zoning has been determined, that the necessary variety of points of the urbo-system research is considered, taking into account the modern transport network, placing of the main industrial objects, development, etc. The justification of the boundaries of the Drohobych urbo-system has been substantiated, which allows providing more accurate environmental analysis within its boundaries. Functional asymmetry that is mainly located on both sides of the central transport highway and thus correlates with the necessary environmental and sanitary measures and necessary investments is indicated.
It is shown that within the limits of such industrial cities as Drohobych, the problem is still that, in the context of a significant decline in the economy, which was typical of the city at the beginning of the 21th century, industrial objects were not only re-profiled, but also for their maintenance almost did not allocate funds. This fact led to their decline, full stop or work not at full capacity.
The long-term monitoring of the ecological condition of the city, conducted by the City State Administration of Environmental Quality Control, has been analyzed, showing significant trends of the variability of the main indicators of the chemical composition of urban reservoirs and urban soils.
Based on sampling of soil, water and air by laboratory methods in certified laboratories of Lviv and Truskavets, it was realized that there is a significant spatial differentiation of quality primarily of drinking water within the city. According to the analysis, it is shown that water used by humans for household purposes in the city of Drohobych is characterized by slight deviations from sanitary norms. Instead, the ecological status of open water bodies is catastrophic, that requires an immediate ban on their use, primarily for recreational purposes.
Against the background of the general non-exceeding of the maximum TLV, urban soils of the city of Drohobych are characterized by a certain ecological problem only due to the accumulation effect.
Pollution of atmospheric air with "CO" in the zones of highways of Drohobych shows that there is a significant number of problem areas, which is amplified by indicators of noise pollution.
An ecological assessment of the territory of the Drohobych urbo-system has been carried out and its weak dependence on functional zoning of the city is shown. It is also shown that areas with a "conditionally threatening" situation (based on the indicators of the chemical composition of the soil) are confined to the zone adjacent to the administrative and cultural center of the city, where there are a number of enterprises with potentially environmentally hazardous activities.
An assessment of the environmental quality of the air in the highway zones regarding the content of the "CO" indicates that the highest rates are observed in the central part of the city and its extreme southern outskirts, which is primarily due to the most intense traffic in the central part of the city and the poor road condition.
The most threatening environmental situation in terms of the quality of atmospheric air is in the northern and southern regions of the city and only the suburbs of the city have "conditionally satisfactory" environmental characteristics.
The ways and measures aimed at improving the geoecological state of the Drohobych urbo-system are substantiated.
