Soil Respiration in Forest Ecosystems in the South of the Far East

• Published in: Eurasian soil science Vol. 56; no. 9; pp. 1201 - 1209
• Main Authors: Ivanov, A. V., Zamolodchikov, D. G., Salo, M. A., Kondratova, A. V., Piletskaya, O. A., Bryanin, S. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-09-2023; Springer; Springer Nature B.V
• Subjects: Air temperature; Carbon dioxide; Carbon dioxide emissions; Coniferous trees; Earth and Environmental Science; Earth Sciences; Ecosystems; Emission; Emission measurements; Emissions; Fluxes; Forest ecosystems; Forest soils; Forests; Geotechnical Engineering & Applied Earth Sciences; Groundwater; Groundwater levels; Moisture effects; Permafrost; Pine trees; Soil; Soil moisture; Soil Respiration in Natural Cenoses; Soil surfaces; Soil temperature; Temperature data; Terrestrial ecosystems; Waterlogged ground; Weather stations; Russia; soil organic carbon; emission; soil temperature; air temperature; CO; forest formations
• ISSN: 1064-2293; 1556-195X
• DOI: 10.1134/S1064229323601142

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The Far East remains the least studied part of Russia with respect to terms of carbon fluxes. A review of the results of field measurements of CO
2
emission from the surface of forest soils obtained at 26 sites in the southern part of the Far East on the territory of four constituent entities of the Russian Federation is presented. The measurements were performed in different forest formations (larch, Siberian pine, oak, and ash–elm forests), including forests in the permafrost zone. Information on seasonal and daily dynamics of the emission is presented. For 14 sites, equations for estimating emissions on the basis of air temperature data from the nearest weather station have been obtained. Annual carbon fluxes vary within 5.5–10.1 t C/ha with a maximum in the old-growth Siberian pine–fir forest of the southern Primorye region. The contribution of the summer season to the annual flux is 46–65%. In the Republic of Buryatia, CO
2
emissions from the soil surface strongly depend on temperature and soil moisture. In waterlogged soils, the emission is significantly affected by the groundwater level (
R
2
=
0.42).