MODELING NET ECOSYSTEM EXCHANGE OF  $\mathrm{CO_2}$ USING MACHINE LEARNING TECHNIQUES: (a Case Study of Sakhalin Island). Proc. YSU C: Geol. Geogr. Sci. 2025, 59 (2 (266), 240-250. https://doi.org/10.46991/PYSUC.2025.59.2.240.