THE INFLUENCE OF RECREATION AND TOURISM FACILITIES ON THE QUALITY OF SURFACE WATER WITHIN THE BASIN OF THE BLACK TISZA RIVER

Objective. To substantiate and analyze the impact of tourist and recreational facilities on the formation of the hydroecological state of the surface waters of the Black Tisza River within the Rakhiv district of the Transcarpathian region. Methods. The methodological basis of this study is a systematic approach to the study and analysis of anthropogenic factors influencing the hydroecological state of the Black Tisza River in order to optimize nature management and improve water protection activities. The study used general scientific methods (retrospective, system-structural) and special methods - mathematical and statistical analysis, semi-stationary observations, cartographic studies, etc. Scientific novelty. The regularities of formation of the chemical composition and hydrochemical regime of surface waters of the Black Tisza River basin under the influence of tourism and recreation facilities were investigated. Results. Today's pace of anthropization of the natural environment, which in turn leads to the transformation of river basin systems, determine the need a of comprehensive study of the ecological state of surface waters. Therefore, when choosing the object of research, we took into account natural conditions and various anthropogenic factors of influence, including objects of the hospitality industry. At the same time, we tried to monitor the impact on water quality along the Black Tisza river, choosing two monitoring points for this purpose: above the Black Tisza village (reference conditions) and in the village of Kvasy. This made it possible to identify and evaluate the dynamics of hydrochemical indicators of water quality, in particular by the content of dissolved oxygen (O2), five days biochemical oxygen consumption (BOD5), chemical oxygen consumption (COD), as well as mineral nitrogen compounds: (N-NH4+), ( N-NO2–), (N-NO3-). The study of the facilities of the hospitality industry as potential sources of influence on the quality of surface water using a selected group of chemical indicators has revealed minor seasonal fluctuations, in particular, in the content of dissolved oxygen, COD and water mineralization. Practical significance. The research materials can be used in the development of measures to reduce and prevent the effects of various types of anthropogenic activities on the state of the aquatic geosystem in the Black Tisza River basin.