Kurganova I.N., Karelin D.V., Kotlyakov V.M., Academician O.T.R., Prokushkin A.S., Zamolodchikov D.G., Ivanov A.V., Ilyasov D.V., Khoroshaev D.A., Lopez D.G.V.O., Bobrik A.A., Bryanin S.V., Goncharova O.YU., Ershov V.V., Ivanov D.G., Zorina S.YU., Kaganov V.V., Kapitsa E.A., Kopsik G.N., Kuznetsov M.A., Kumanyaev A.S., Kuprin A.V., Mamai A.V., Matvienko A.I., Makhnykina A.V., Mostovaya A.S., Moshkina E.V., Mothenov S.YU., Ryabov N.S., Sapronov D.V., Sidenko N.V., Sokolova L.G., Sorokin A.S., Suvorov G.G., Sukhoveeva O.E., Chumbaev A.S., Shmakova N.YU.
Доклады Российской академии наук. Науки о Земле 2024; 519(1): 550-559
Soil respiration (SR) is one of the largest fluxes in the global carbon cycle, exceeding anthropogenic CO2 emissions by more than an order of magnitude. Estimation of the heterotrophic component of SR is necessary to assess the carbon balance at ecosystem, regional, national and global scales. Within the framework of the Most Important National Innovation Project “Development of the system of ground and remote monitoring of carbon pools and greenhouse gas fluxes on the territory of the Russian Federation” the first Russian national network of CO2 emission from soils is organized. For the first time on the entire territory of Russia on the basis of methodologically unified SR field measurements were conducted. This study combines first measurements conducted in the summer period (June - August) of 2023 at 75 monitoring sites in different ecosystems in the main Russian bioclimatic zones from tundra to semi-desert. SR values and its relationship with the temperature of the upper 5-10-cm layer of soil (Ts) were analyzed. Positive effect of soil temperature on mean summer SR rate and maximum monthly SR values is observed in the interval of mean Ts from 10 to 20°C. Among the studied ecosystems, the lowest SR values were found in tundra and bog ecosystems, while the highest values were found in forest-steppe. Amongst forest ecosystems, the lowest SR rates are characteristic of larch forests, while the highest SR values were observed in broad-leaved forests of the forest-steppe zone. To clarify the obtained regularities, it is necessary to expand studies in all bioclimatic zones, but mainly in agrocenoses, tundra and steppe ecosystems.
