Кл.слова (ненормированные):
Bacterial diversity -- CH4 and CO2 emission -- Dynamics and activity of microbial complexes -- Frost-crack polygons -- Larch forests -- Tundra -- Сryogenic soils
Аннотация: We studied structure, dynamics and functional (biogeochemical) activity of microbial complexes of cryogenic soils in larch forests in Central Evenkia and polygonal tundra on Samoilovskii Island, Lena Delta. We found that daily flux of methane from soil surface is 3–5 times less in forest soil than in the center of polygon in tundra. Short-term heating to 18.5–22.5 °C of permafrost-affected soil in larch forest caused sweetening of soil solution, shrinkage of eco-trophic groups of microorganisms and microbial biomass, as well as increase in greenhouse gases (CO2 and CH4) emission to the air. Notably the permafrost-affected soil on sandy deposits in tundra had highest microbial diversity of methanogenic archaea including Methanobacteriaceae, Methanomicrobiaceae, Methanosarcinaceae, Methanosaetaceae families. On the other hand only Methanosarcinacea were found in cryosols of larch forest. Both type I and type II methanotrophs were found in the forest soil, while only type II methanotrophs occurred in tundra soil. © 2017, Izdatel’stvo Nauka. All rights reserved.
Scopus
Держатели документа:
Forest Institute, Siberian Branch of the Russian Academy of Sciences, Academgorodok, 50, bldg. 28, Krasnoyarsk, Russian Federation
Krasnoyarsk filial of the Information and Methodological Center for Expert Evaluation, Recording and Analysis of Circulation of Medical Products, Roszdravnadzor, Kutuzova st., 1, bldg. 1, Krasnoyarsk, Russian Federation
Institute of Biophysics, Siberian Branch of the Russian Academy of Sciences, Academgorodok, 50, bldg. 50, Krasnoyarsk, Russian Federation
Roche Diagnostika Rus Ltd., Letnikovskaya, 2, bldg. 2, Moscow, Russian Federation
Доп.точки доступа:
Grodnitskaya, I. D.; Sorokin, N. D.; Evgrafova, S. Y.; Antonov, G. I.; Syrtsov, S. N.; Aleksandrov, D. E.; Trusova, M. Y.; Koroban, N. V.