Discrete-continuous stochastic model of identification of environmental ecological states

Authors

DOI:

https://doi.org/10.31649/1681-7893-2026-51-1-302-312

Keywords:

mathematical modeling, discrete-continuous stochastic model, ecological state, maximum permissible concentration, environment.

Abstract

The paper proposes an approach to constructing a discrete-continuous stochastic model for solving problems of environmental safety assessment. The developed Markov model describes the dynamics of a generalized environmental indicator within an extended phase space of six ecological macrostates, which combines the current pollution level and its trend phase to account for the system's inertia. A method for identifying ecological macrostates using a sensitivity threshold to account for measurement errors is proposed, enabling the filtration of noise and reliable identification of transitions between ecosystem states. The proposed approach allows calculating the steady-state distribution and objectively estimating the proportion of time the ecosystem spends in critical states, unlike traditional approaches based solely on the static recording of current exceedances of maximum permissible limits. The model was verified using experimental measurement data obtained at real transport hubs in Ternopil. Based on the calculated steady-state probability distribution, ecological risk profiles were quantitatively determined, enabling the identification of dominant states for the study areas and the characterization of external environmental impact factors The developed mathematical model provides a scientifically sound basis for managing anthropogenic load on the environment and mitigating ecological risks.

Author Biographies

M.P. Dyvak, West Ukrainian National University

Доктор технічних наук, професор

V.I. Manzhula, West Ukrainian National University

Доктор технічних наук, професор

References

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Directive 2008/50/EC of the European Parliament and of the Council of 21 May 2008 on ambient air quality and cleaner air for Europe. https://zakon.rada.gov.ua/laws/show/994_950#Text

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Dyvak M., Spivak I., Melnyk A., Manzhula V., Dyvak T., Rot, A., Hernes, M. Modeling Based on the Analysis of Interval Data of Atmospheric Air Pollution Processes with Nitrogen Dioxide due to the Spread of Vehicle Exhaust Gases. Sustainability (Switzerland). 2023. 15 (3). P. 2163. https://doi.org/10.3390/su15032163.

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Published

2026-06-18

How to Cite

[1]
M. Dyvak and V. Manzhula, “Discrete-continuous stochastic model of identification of environmental ecological states”, Опт-ел. інф-енерг. техн., vol. 51, no. 1, pp. 302–312, Jun. 2026.

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Section

Optical And Optical-Electronic Sensors And Converters In Control And Environmental Monitoring Systems

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