Borysov O. Scientific bases of the assessment of the level of ecological safety of urban recreational areas located nearby highways

On the basis of monitoring studies of urban recreational areas on acid-base and saline contamination, pollution by heavy metals, surfactants and radioactive substances of soil, precipitation and surface waters, as well as taking into account the type of activity and recreation of people a method of assessing technogenic load on the surface space of recreational areas located near highways was developed. The expediency of application and the technique of calculation of the complex indicator of the technogenic load as the indicator of changes of ecological state of investigated territories were developed and substantiated. This allowed to establish the level of ecological danger of recreational areas depending on the type of human activity and recreation and to create a scientific basis for the improvement of the environmental monitoring of urban recreational areas; to develop measures and provide recommendations for improving their ecological safety, etc. By the method of mathematical modeling, the fields of dispersion of harmful impurities of exhaust gases of vehicles (carbon monoxide CO, nitrogen oxides NOx (in terms of NO2) and particulate matter) were created and levels of technogenic load on the investigated recreational areas were determined. Under different weather conditions, the minimum distances from the road at which ecologically acceptable concentrations of harmful impurities are observed were defined.