Updated estimate of carbon balance on Russian Territory

Kurganova, I.N.; Kudeyarov, V.N.; Lopes de Gerenyu, V.O.

Авторы: Kurganova I.N., Kudeyarov V.N., Lopes de Gerenyu V.O.
Журнал: Tellus B
Том: 62
Год издания: 2010
Первая страница: 497
Последняя страница: 505
DOI: 10.1111/j.1600-0889.2010.00467.x
Аннотация: The land use system in Russia changed considerably after 1990: 30.2 million ha of croplands were abandoned. Based on the own field investigations that were carried out in abandoned lands of different age (Luvic Phaeozems, deciduous forest zone; Moscow region, 54◦50N, 37◦37E), it has been shown that after 4–5 yr of abandonment, the former croplands acted as a stable sink of CO2. The net ecosystem production (NEP) in the post-agrogenic ecosystems averaged 245 ± 73gCm−2 yr−1 for the first 15 yr after land use change that corresponds to an estimated 74 ± 22 Tg C yr−1 for the total area of abandoned lands in Russian Federation. Currently, the Russian territory acts as an absolute sink of atmospheric CO2 at a rate about 0.90 Pg C yr−1. Using three different approaches, it was demonstrated that after 1990, the carbon sequestration in Russian soils (0–20 cm layer) has averaged 34 ± 2.2 Tg C yr−1. This soil C forms net biome production (NBP) where carbon lifetime is much longer than in ‘Kyoto forests’. Thus, the post-agrogenic ecosystems in Russia provide with the additional CO2 sink in NEP and NBP that could annually compensate about 25% of the current fossil fuel emissions in the Russian Federation.
Добавил в систему: Курганова Ирина Николаевна

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