CO2 Emission and Organic Carbon Pools in Soils of the Northern Taiga Ecosystems of Western Siberia under Different Geocryological Conditions

Bobrik, A.A.; Ryzhova, I.M.; Goncharova, O.Y.; Matyshak, G.V.; Makarov, M.I.; Walker, D.A.

Авторы: Bobrik A.A., Ryzhova I.M., Goncharova O.Yu, Matyshak G.V., Makarov M.I., Walker D.A.
Журнал: Eurasian Soil Science
Том: 51
Номер: 6
Год издания: 2018
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 628
Последняя страница: 636
Оригинальные версии: Эмиссия СО2 и запасы органического углерода в почвах северотаежных экосистем Западной Сибири в различных геокриологических условиях
DOI: 10.1134/S1064229318060042
Аннотация: Statistical analysis of a vast body of data collected during five field seasons (2011–2015) was performed to characterize the biological activity of soils in the northern taiga ecosystems of Western Siberia. Automorphic forest soils, hydromorphic (oligotrophic bog) soils, and semihydromorphic (flat-topped and large peat mounds) soils were characterized. Statistically significant differences of average levels of СО2 emission from the soils were identified at the ecosystem level. The СО2 emission from podzols of automorphic forest ecosystems at the peak of the growing season (205 ± 30 to 410 ± 40 mg СО2/(m2 h)) was significantly higher than the emission from semihydromorphic soils of peat mounds (70 ± 20 to 116 ± 10 mg СО2/(m2 h)). The presence and depth of permafrost was a significant factor that affected ecosystem diversity and biological activity of northern taiga soils. Statistically significant differences in the total, labile, and microbial carbon pools were observed for the studied soils. Labile and microbial carbon pools in the organic layer (10 cm) of forest podzols amounted to 0.19 and 0.66 t/ha, respectively; those in the organic layer (40 cm) of peat cryozems of flat-topped peat mounds reached 1.24 and 3.20 t/ha, and those in the oligotrophic peat soils (50 cm) of large peat mounds were 2.76 and 1.35 t/ha, respectively. The portion of microbial carbon in the total carbon pool (Сmicr/Сtot, %) varied significantly; according to the values of this index, the soils were arranged into the following sequence: oligotrophic peat soil < peat cryozem < podzol.
Добавил в систему: Бобрик Анна Александровна

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CO2 Emission and Organic Carbon Pools in Soils of the Northern Taiga Ecosystems of Western Siberia under Different Geocryological Conditionsстатья

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