Microbiological transformation of carbon and nitrogen compounds in forest soils of Central Evenkia

Описание

Тип публикации: статья из журнала

Год издания: 2017

Идентификатор DOI: 10.1134/S1064229317040123

Ключевые слова: ammonium and nitrate nitrogen, CO2 and CH4 emission, cryogenic soils, microbial complexes, respiratory activity, slopes of northern and southern exposures

Аннотация: It has been found that the total productivity of bacteria and micromycetes in the 0- to 50-cm layer of homogeneous cryozems (Cryosols) on slopes of northern and southern exposures varies from 1.2 to 1.4 t/ha, respectively, and the calculated content of microbial carbon varies in the range 0.7–0.9 t/ha. The respiratory activity of tПоказать полностьюhe upper soil layer is 2.5–2.6 μg C–CO2/(g h); the potential methane formation capacity reaches 0.13 nmol CH4/(m2 day) for soils on slopes of northern exposure and 0.16 nmol CH4/(m2 day) for slopes of southern exposure. Accumulation of sorbed ammonium is recorded in the range 15–17 mg NH4/100 g soil in summer. The increase of temperature in the upper horizons of soils on slopes of southern exposure by 5°C compared to the northern slopes results in only an insignificant increase in the emission of CO2 and CH4. The accumulation of sorbed ammonium and nitrate nitrogen in homogeneous cryozems during the vegetation period is comparable to that in gray forest soils of the southern taiga subzone of the Middle Siberia. © 2017, Pleiades Publishing, Ltd.

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Издание

Журнал: Eurasian Soil Science

Выпуск журнала: Т. 50, 4

Номера страниц: 476-482

ISSN журнала: 10642293

Место издания: Москва

Издатель: Pleiades Publishing, Ltd. (Плеадес Паблишинг, Лтд)

Авторы

  • Sorokin N.D. (Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation)
  • Aleksandrov D.E. (Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation)
  • Grodnitskaya I.D. (Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation)
  • Evgrafova S.Yu. (Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation)

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