主题词：Mathematical and Theoretical Epidemiology and Ecology Models; Economic and Environmental Valuation; Energy, Environment, Economic Growth; Evolution and Genetic Dynamics; Conservation, Biodiversity, and Resource Management; Sustainable Development and Environmental Policy; COVID-19 epidemiological studies; Land Use and Ecosystem Services; Climate Change Policy and Economics; Water resources management and optimization; Energy, Environment, and Transportation Policies; Environmental Impact and Sustainability; Forest Management and Policy; Mathematical Biology Tumor Growth; Hydrology and Drought Analysis; Economic and Technological Developments in Russia; Economic and Business Development Strategies; Hydrology and Watershed Management Studies; Evolutionary Game Theory and Cooperation; Energy and Environment Impacts; Stability and Control of Uncertain Systems; Fractional Differential Equations Solutions; Fiscal Policy and Economic Growth; Remote Sensing and Land Use; Marine and fisheries research