Библиографическое описание:A System Reanalysis of the Current Greenhouse Gases Budget of Terrestrial Ecosystems in Russia : научное издание / A. A. Shvidenko [et al.]. - Текст : непосредственный // Global Biogeochemical Cycles. - 2025. - Т. 39, № 10. - P. e2025GB008540. - ISSN 0886-6236. - ISSN 1944-9224, DOI 10.1029/2025gb008540.
Аннотация:<jats:title>Abstract</jats:title> <jats:p> This study synthesizes the budgets of three greenhouse gases (GHG, namely CO <jats:sub>2</jats:sub>, CH <jats:sub>4</jats:sub>, N <jats:sub>2</jats:sub> O) for Russia over two decades (2000–2009 and 2010–2019) using bottom-up and top-down approaches, as part of the Regional Carbon Cycle Assessment and Processes, Phase 2 (RECCAP2). Published estimates of natural sources and sinks of these GHGs in Russia vary widely. Here, bottom-up estimates are based on eddy covariance measurements, the Integrated Land Information System of Russia (ILIS-LEA), field data, Dynamic Global Vegetation Models (DGVMs), and regional models. The bottom-up approach estimated Net Ecosystem Exchange (NEE) at −0.64 ± 0.17 and −0.57 ± 0.14 Pg C yr <jats:sup>−1</jats:sup>, for decades 2000–2009 and 2010–2019, respectively. Top-down atmospheric inversions provide similar NEE carbon flux estimates with comparable uncertainties at −0.56 ± 0.26 and −0.73 ± 0.27 Pg C yr <jats:sup>−1</jats:sup> for the two decades. Differences between these approaches arise from distinct flux components and structural assumptions. ILIS-LEA indicates a slightly declining carbon sink in 2010–2019, driven by increased disturbances. In contrast, DGVMs suggest a stable carbon sink over both decades but they do not fully simulate the effects of disturbances and recovery. Top-down inversions reveal an increasing CO <jats:sub>2</jats:sub> sink, suggesting with additional observed constraints on biomass carbon increment that soil and non-forest biomes absorb more carbon than predicted by DGVMs and ILIS-LEA models. A Bayesian averaging approach estimates natural ecosystems acting as a GHG sink with a land-to-atmosphere flux of −1.55 ± 0.91 and −1.47 ± 0.82 Pg CO <jats:sub>2</jats:sub> -eq. yr <jats:sup>−1</jats:sup>. Accounting for both natural and anthropogenic emissions across the Russian territory shifts the net GHG balance to a source around 1.2 Pg CO <jats:sub>2</jats:sub> -eq. yr <jats:sup>−1</jats:sup>. </jats:p>
Держатель оригинала документа:A.N. Severtsov Institute of Ecology and Evolution of Russian Academy of Sciences Moscow Russia, Center for Environmental Remote Sensing Chiba University Chiba Japan, Center for Forest Ecology and Productivity of the Russian Academy of Sciences Moscow Russia, Centre d’Etudes Orme des Merisiers Laboratoire des Sciences du Climat et de l’Environnement IPSL-LSCE CEA CNRS UVSQ Gif sur Yvette France, Department of Geography University of Calgary Calgary AB Canada, Faculty of Soil Science Lomonosov Moscow State University Moscow Russia, Institute for Applied Ecosystem Studies Northern Research Station US Forest Service Rhinelander WI USA, Institute for Earth System Science and Remote Sensing Leipzig University Leipzig Germany, Institute of Forest Science Russian Academy of Sciences Moscow Russia, Institute of Geography RAS Moscow Russia, Institute of Physicochemical and Biological Problems in Soil Science RAS Pushchino Russia, International Institute for Applied Systems Analysis (IIASA) Laxenburg Austria, NASA Goddard Space Flight Center Greenbelt MD USA, National Institute of Environmental Studies Tsukuba Japan, National Research University Higher School of Economics Moscow Russia, Research Institute for Global Change JAMSTEC Yokohama Japan, Siberian Federal University Krasnoyarsk Russia, University Paris-Saclay INRAE AgroParisTech UMR ECOSYS Palaiseau France, V.N. Sukachev Institute of Forest Siberian Branch of the Russian Academy of Sciences Krasnoyarsk Russia, Yu. A. Izrael Institute of Global Climate and Ecology Moscow Russia
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