The studies determined soil CO2 emissions from deposits of different ages in three natural and climatic zones of the south of Western Siberia. The objects of research were fallow lands of various age groups in three natural and climatic zones of the Omsk region and the size of soil CO 2 emissions. The research was carried out in key areas of the Omsk region: steppe (Cherlaksky district, Preobrazhenka village), forest-steppe (Kormilovsky district, Sosnovka village), subtaiga (Tarsky district, Tara); three sites with different age fallow lands were identified in each zone: 5-10, 10-20 and 20-30 years. Carbon dioxide emissions were determined in key areas of fallow lands monthly, with an interval of 10-15 days, starting from May-October. When comparing the intensity of carbon dioxide emissions from fallow lands, depending on the conditions of the natural and climatic zone, it can be noted that its greatest value was in the subtaiga zone (on average for April-September - 39.4 CO 2 /m -2 * day -1 ), this is higher than the size of emissions in the forest-steppe (14.7) and steppe zones (16,6). The maximum intensity of flows was recorded in the subtaiga zone in August, in the forest-steppe and steppe in July. The influence of the age of fallow lands on the level of soil carbon dioxide emissions is observed. Younger deposits are characterized by a greater amount of CO 2 emissions compared to the older ones. So, in the subtaiga zone, the average seasonal emission from deposits 5-10 years old is 1.51 times higher than from deposits aged 20-30 years, in the forest-steppe zone it is 1.46 times, respectively, in the steppe zone - 1.48 times.
fallow lands, carbon dioxide emissions, soil, natural areas
1. Lyubimova I.N., Salpagarova I.A. Vozmozhnost' i celesoobraznost' vozvrata v sel'skohozyaystvennyy oborot ranee meliorirovannyh soloncovyh zemel' (obzor) // Pochvovedenie, 2020. № 9. S. 1100-1110. DOI:https://doi.org/10.31857/S0032180X20090099 EDN: https://elibrary.ru/MTWOKL
2. Vliyanie tipa zemlepol'zovaniya na svoystva pochv i strukturu ekosistemnyh zapasov ugleroda v srednetaezhnoy podzone Karelii / I.A. Dubrovina, E.V. Moshkina, V.A. Sidorova [i dr.] // Pochvovedenie, 2021. № 11. S. 1392-1406. DOI:https://doi.org/10.31857/S0032180X21110058 EDN: https://elibrary.ru/FOIZHV
3. Kurganova I.N., Semenov V.M., Kudeyarov V.N. Klimat i zemlepol'zovanie kak klyuchevye faktory stabil'nosti organicheskogo veschestva v pochvah // Dokl. Akademii nauk, 2019. T. 489, № 6. S. 646-650. DOI:https://doi.org/10.31857/S0869-56524896646-650 EDN: https://elibrary.ru/LMUIKY
4. Vasenev I.I., Komarova T.V. Successional dynamics of soil CO2 emission in the chronological series of deposit overgrowth on sod-pale-podzolic soils // Reports of the TLC: Collection of articles, Moscow, 05-07 December 2017. Volume Issue 290, Part IV. Moscow: Russian State Agrarian University Moscow Agricultural Academy named after K.A. Timiryazev, 2018. pp. 382-384.
5. Kratkosrochnaya dinamika emissii SO2 i soderzhaniya ugleroda v gorodskih pochvennyh konstrukciyah stepnoy zony / S.N. Gorbov, V. Vasenev, E.N. Minaeva [i dr.] // Pochvovedenie, 2023. № 9. S. 1103-1115. DOI:https://doi.org/10.31857/S0032180X23600282 EDN: https://elibrary.ru/DVVAWS
6. Prostranstvenno-vremennaya izmenchivost' soderzhaniya i zapasov organicheskogo veschestva pochvy: analiticheskiy obzor / N.B. Hitrov, D.A. Nikitin, E.A. Ivanova [i dr.] // Pochvovedenie, 2023. № 12. S. 1493-1521. DOI:https://doi.org/10.31857/S0032180X23600841 EDN: https://elibrary.ru/DQYRHW
7. Dinamika svoystv pochv i ekosistemnye zapasy ugleroda pri raznyh tipah zemlepol'zovaniya (srednyaya tayga Karelii) / I.A. Dubrovina, E.V. Moshkina, A.V. Tuyunen [i dr.] // Pochvovedenie, 2022. № 9. S. 1112-1125.https://doi.org/10.31857/S0032180 X22090052. DOI:https://doi.org/10.31857/S0032180X22090052 EDN: https://elibrary.ru/ZXDNFU
8. Azarenko Yu.A., Befus M.V. Plodorodie pahotnyh i zalezhnyh lugovo-chernozemnyh pochv agrolandshaftov yuzhnoy lesostepi Omskogo Priirtysh'ya // Vestnik Omskogo gosudarstvennogo agrarnogo universiteta, 2024. № 1 (53). S. 5-15. EDN: https://elibrary.ru/ENSYWT
9. Demin E.A., Miller S.S. Vliyanie razlichnyh sposobov obrabotki i temperatury pochvy na emissiyu uglekislogo gaza v posevah yarovoy pshenicy v usloviyah lesostepnoy zony Zaural'ya // Zemledelie, 2024. № 4. S. 13-18. DOI:https://doi.org/10.24412/0044-3913-2024-4-13-18 EDN: https://elibrary.ru/WLWKSZ
10. Monitoring carbon dioxide fluxes during fallow land conversion in the Subtaiga zone / Bobrenko I., Goman N., Nezhevlyak O. [et al.]. E3S Web of Conferences, 2023, 389, 04004. EDN: https://elibrary.ru/WEKCWN
11. Investigation of the intensity of carbon dioxide emissions by steppe soil when introducing fallow lands into circulation / Bobrenko I., Goman N., Nezhevlyak O. [et al.]. E3S Web of Conferences, 2023, 413, 01004. EDN: https://elibrary.ru/FAMNBD
12. Azarenko Yu.A., Zinenko S.E. Agroekologicheskoe sostoyanie postagrogennyh i vvedennyh v pashnyu seryh lesnyh pochv Omskogo Priirtysh'ya // Vestnik Kurskoy gosudarstvennoy sel'skohozyaystvennoy akademii, 2024. № 4. S. 25-32. EDN: https://elibrary.ru/CCGQIV
13. Azarenko Y., Alekseeva Z., Zinenko S. Assessment of fallow grey forest soils fertility in sub-taiga zone of Omsk Priirtyshye, E3S Web of Conferences, 2023, 462, 03042. EDN: https://elibrary.ru/MTYGNO
14. Monitoring potokov dioksida ugleroda na raznovozrastnyh zalezhah v razlichnyh prirodno-klimaticheskih zonah yuga Zapadnoy Sibiri / I.A. Bobrenko, N.V. Goman, O.V. Drofa [i dr.] // Ekobioteh, 2024. T. 7. № 2. S. 129-140. EDN: https://elibrary.ru/TJEIKI
15. Azarenko Y. Saline fertility of fallow land massifs in the steppe zone of the Omsk Priirtyshye region. E3S Web of Conferences, 2023, 462, 02037. EDN: https://elibrary.ru/ZPZOXN
16. NAUChNO-OBOSNOVANNAYa SISTEMA MONITORINGA POTOKOV PARIKOVYH GAZOV PRI RAZLIChNYH TEHNOLOGIYaH VVEDENIYa V OBOROT ZALEZhNYH ZEMEL' Bobrenko I.A. NIR: grant № 22-17-20049. Rossiyskiy nauchnyy fond. 2022. EDN: https://elibrary.ru/RBCWXD
