The article presents the results of developing a software system for production planning in the field of wood harvesting. The objects of research are the planning of harvesting operations, forest transport, construction, repair and maintenance of forest roads, as well as solving various related problems. The purpose of the work is to develop a native specialized software system for production planning in the field of wood harvesting, which is integrated with existing accounting and monitoring systems and is based on solving complex optimization problems of large dimensions using original specially developed methods and algorithms that take into account all the features of wood harvesting production in the Russian Federation. As a result of this work, an approach to creating such а system was developed, which includes a set of requirements for the software product, as well as formulations of the main tasks to be solved, listing the necessary initial data and information obtained as an output. The proposed approach was implemented by Russian IT-company Opti-Soft in the form of software product Opti-Wood — a multipurpose Decision Support System (DSS) designed for the use at forestry enterprises as a tool for optimizing production planning, management and control. The Opti-Wood system was developed in close contact with a large wood harvesting enterprise in the Republic of Karelia. The system is based on original algorithms for solving several optimization problems of increased complexity. Using the system allows one to increase the efficiency of logging processes by reducing costs in supply chains, the volume of warehouse stocks, the number of required vehicles; by mutual agreement of plans for harvesting operations, forest transport, road construction, etc., as well as by significantly reducing the time for taking management decisions. Increased profitability occurs due to the identification of additional options for the sale of products.

1. Connected forest by Trimble Forestry, available at: https://forestry.trimble.com/ (date of access 19.02.24).
2. Forest by Pinja, available at: https://pinja.com/en/services/forest-industry/forest (date of access 19.02.24).
3. INFLOR Forest, available at: https://inflor.com/inflor-forest/ (date of access 19.02.24).
4. Smart Forestry, available at: https://afry.com/en/compe-tence/smart-forestry (date of access 19.02.24).
5. Creative optimization: Our solutions, available at: https://cre-ativeoptimization.se/language/en/solutions/ (date of access 19.02.24).
6. Sokolov A. P. Operational Logistics Management of Transport Processes in Wood, Lesnoj zhurnal, 2015, no. 4, pp. 87—103. DOI: 10.17238/issn0536-1036.2015.4.87 (in Russian).
7. Sokolov A. P. Evaluation of the results of production units on timber processing and transportation in production accounting and planning systems, Lesotekhnicheskij zhurnal, 2020, vol. 10, no. 2, pp. 143—150. DOI: 10.34220/issn.2222-7962/2020.2/14 (in Russian).
8. Sokolov A. P. Wood harvesting plan generation: task formulation. Modern forest complex of the country: problems and development trends: materials of the All-Russian scientific and practical conference, Voronezh, 2022, pp. 217—223 (in Russian).
9. Sokolov A. P., Gerasimov Y. Y. Functional logistics of the wood harvesting company, Petrozavodsk, PetrSU press, 2014, 86 p. (in Russian).
10. Sokolov A. P., Katarov V. K., Syunev V. S. Logistical sup­port of the wood harvesting, Petrozavodsk, PetrSU press, 2015, 160 p. (in Russian).
11. Sokolov A. P., Syunev V. S. Logistic concept of wood harvesting operations, Uchenye zapiski PetrGU, 2014, no. 4 (141), pp. 88—94 (in Russian).
12. Sokolov A. P., Syunev V. S., Seliverstov A. A., Sukhanov Y. V. Features of functional logistics for wood harvest­ing. Resources and Technology, 2014, vol. 11, no. 1, pp. 50 — 65. DOI: 10.15393/j2.art.2014.2781 (in Russian).
13. Sokolov A. P. Development of the wood harvesting planning system Opti-Wood, Proceedings of the seventh All-Russian national scientific and practical conference with international participation "Increasing the efficiency of the forest complex", Petrozavodsk, 2021, pp. 178—179 (in Russian).
14. Sokolov A. P. Planning system of wood procurement Opti-Wood. Proceedings of the XI International Scientific and Technical Conference "Automation and control in the pulp and paper industry, timber industry and energy sector", Petrozavodsk, 2016, pp. 26—28 (in Russian).
15. Sokolov A. P., Shabaev A. I. Opti-Wood: a system for wood harvesting operations planning. Collection of scientific papers "Current problems of the forest complex", 2018, vol. 53, pp. 145—148 (in Russian).
16. Opti-Soft, available at: https://www.opti-soft.ru/ (date of access 19.02.24).
17. Shabaev A. I., Sokolov A. P., Urban A. R., Pyatin D. S. Optimal Planning of Wood Harvesting and Timber Supply in Rus­sian Conditions, Forests, 2020, vol. 11, no. 6, article 662. pp. 1—17. DOI: 10.3390/f11060662.
18. Shabaev A. I., Sokolov A. P., Urban A. R., Pyatin D. S. Mathematical model and numerical methods of the wood harvesting machines scheduling, Resources and Technology, 2018, vol. 15, no. 1, pp. 23—38 (in Russian). DOI: 10.15393/j2.art.2018.4061.
19. Shabaev A. I., Sokolov A. P., Urban A. R., Pyatin D. S. An approach to the optimal timber transport scheduling, E3S Web of Conferences, 2020, vol. 164, article number 03019. DOI: 10.1051/e3sconf/202016403019.
20. Shabaev A. I., Sokolov A. P., Urban A. R., Pyatin D. S. Mathematical model and numerical methods for solving the problem of operational timber transport, Inzhenernyj vestnik Dona, 2018, no. 4, pp. 1—23 (in Russian).
21. Shabaev A. I., Sokolov A. P., Urban A. R., Pyatin D. S. An approach to the scheduling of wood harvesting machines, IOP Conference Series: Earth and Environmental Science, 2019, vol. 316, no. 1, article 012061. DOI: 10.1088/1755-1315/316/1/012061.