Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 57595 10.2205/2023ES000865 siqkdd ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Possible Nutrient Load Reduction on the Large River Catchment Due to the Best Available Techniques Introduction in Agricultural Production Possible Nutrient Load Reduction on the Large River Catchment Due to the Best Available Techniques Introduction in Agricultural Production https://orcid.org/0000-0003-4963-3821 Брюханов Александр Юрьевич Briukhanov Aleksandr Yur'evich sznii@yandex.ru

доктор технических наук;доктор технических наук;

doctor of technical sciences;doctor of technical sciences;

 https://orcid.org/0000-0003-1451-8428 Кондратьев Сергей Алексеевич Kondratyev Sergey Alekseevich 3718470@gmail.com

доктор физико-математических наук;доктор физико-математических наук;

doctor of physical and mathematical sciences;doctor of physical and mathematical sciences;

 https://orcid.org/0000-0002-2393-0070 Шмакова Марина Валентиновна Shmakova Marina Valentinovna m-shmakova@yandex.ru

доктор географических наук;

doctor of geographical sciences;

 https://orcid.org/0000-0002-5910-5793 Васильев Эдуард Вадимович Vasilev Eduard Vadimovich sznii6@yandex.ru

кандидат технических наук;

candidate of technical sciences;

 https://orcid.org/0000-0001-7198-6936 Обломкова Наталья Сергеевна Oblomkova Natalia Sergeevna oblomkovan@gmail.com Институт агроинженерных и экологических проблем сельскохозяйственного производства. ИАЭП - ФИЛИАЛ ФГБНУ ФНАЦ ВИМ Санкт-Петербург Россия Federal State Budgetary Scientific Institution “Federal Scientific Agroengineering Center VIM” (FSAC VIM) Saint-Petersburg Russian Federation Институт озероведения РАН – обособленное структурное подразделение Санкт-Петербургского Федерального исследовательского центра РАН (ИНОЗ РАН - СПб ФИЦ РАН) Санкт-Петербург Россия Institute of Limnology of the Russian Academy of Sciences – a Separate Subdivision of the St. Petersburg Federal Research Center of the Russian Academy of Sciences (IL RAS – SPb FRC RAS) Saint-Petersburg Russian Federation Институт озероведения РАН – обособленное структурное подразделение Санкт-Петербургского Федерального исследовательского центра РАН (ИНОЗ РАН - СПб ФИЦ РАН) Санкт-Петербург Россия Institute of Limnology of the Russian Academy of Sciences – a Separate Subdivision of the St. Petersburg Federal Research Center of the Russian Academy of Sciences (IL RAS – SPb FRC RAS) Saint-Petersburg Russian Federation Институт агроинженерных и экологических проблем сельскохозяйственного производства. ИАЭП - ФИЛИАЛ ФГБНУ ФНАЦ ВИМ Санкт-Петербург Россия Federal State Budgetary Scientific Institution “Federal Scientific Agroengineering Center VIM” (FSAC VIM) Saint-Petersburg Russian Federation Институт агроинженерных и экологических проблем сельскохозяйственного производства. ИАЭП - ФИЛИАЛ ФГБНУ ФНАЦ ВИМ Россия Federal State Budgetary Scientific Institution “Federal Scientific Agroengineering Center VIM” (FSAC VIM) Russian Federation 15 12 2023 15 12 2023 23 5 1 12 21 09 2023 10 11 2023 https://rjes.ru/en/nauka/article/57595/view

The study aimed to assess the possible reduction of the nutrient load and nitrogen and phosphorus losses from the Russian part of the Irtysh River catchment, one of our country’s largest transboundary rivers, by implementing the best available techniques (BAT) in agricultural production. The Institute of Limnology Load Model (ILLM) mathematical model of nutrient load on the river watershed was used to solve the problem. Information on the primary sources of the nutrient load was collected for the entire Russian part of the Irtysh River catchment and tributaries catchments: Om, Ishim, Tobol, and Konda rivers. Agricultural activity of more than 800 enterprises concentrated mainly in the southern part of the Russian basin was analyzed. The calculations show that the most significant reduction of agricultural nutrient load due to BAT implementation is achieved in the Russian part of the catchment area of the Tobol River (31% for nitrogen and 25% for phosphorus from the total load on the catchment). The nutrient load can be reduced by 23% of nitrogen and 18% of phosphorus due to BAT implementation from the entire catchment of the Irtysh River (Russian part), which will lead to a corresponding reduction in a nutrient run-off by 13% of nitrogen and 4% of phosphorus. Therefore, a significant decrease in nutrient transport by river flow cannot be expected. However, it is essential to confirm the possibility of nutrient load reduction through the implementation of BAT, aiming at the transition to modern production technologies by minimizing the impact on the environment and maintaining the economic efficiency of agricultural production.

The study aimed to assess the possible reduction of the nutrient load and nitrogen and phosphorus losses from the Russian part of the Irtysh River catchment, one of our country’s largest transboundary rivers, by implementing the best available techniques (BAT) in agricultural production. The Institute of Limnology Load Model (ILLM) mathematical model of nutrient load on the river watershed was used to solve the problem. Information on the primary sources of the nutrient load was collected for the entire Russian part of the Irtysh River catchment and tributaries catchments: Om, Ishim, Tobol, and Konda rivers. Agricultural activity of more than 800 enterprises concentrated mainly in the southern part of the Russian basin was analyzed. The calculations show that the most significant reduction of agricultural nutrient load due to BAT implementation is achieved in the Russian part of the catchment area of the Tobol River (31% for nitrogen and 25% for phosphorus from the total load on the catchment). The nutrient load can be reduced by 23% of nitrogen and 18% of phosphorus due to BAT implementation from the entire catchment of the Irtysh River (Russian part), which will lead to a corresponding reduction in a nutrient run-off by 13% of nitrogen and 4% of phosphorus. Therefore, a significant decrease in nutrient transport by river flow cannot be expected. However, it is essential to confirm the possibility of nutrient load reduction through the implementation of BAT, aiming at the transition to modern production technologies by minimizing the impact on the environment and maintaining the economic efficiency of agricultural production.

 nutrient load modeling river basin best available techniques nutrient load modeling river basin best available techniques The funds of the State Procurement theme FMNG-2019-0001 were used for this study implementation. The funds of the State Procurement theme FMNG-2019-0001 were used for this study implementation.

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