Сибирский федеральный университет

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: International Multidisciplinary Scientific Geoconference (SGEM 2016); Albena, BULGARIA; Albena, BULGARIA

Год издания: 2016

Ключевые слова: permafrost-affected soils, forest and tundra ecosystems, methane, delta C-13 signature, PERMAFROST, WETLANDS, CLIMATE, DELTA

Аннотация: We investigated isotopic signature of methane efflux from soil surface of Siberian arctic and sub-arctic ecosystems in sites in Siberia. In the boreal ecosystem of the Tura site (64 degrees 15'N, 100 13'E) the delta C-13 signature of methane (-43%o for south facing slope and -35%o from north facing slope) showed low methane production potential of investigated soils. Two years of monitoring of the delta C-13(CH4) signatures from surface of ice-wedge polygon of Samoylov island (72 degrees 22'N, 126 degrees 28'E) showed that the delta C-13 signature were different regarding to temperature and precipitation. The mean of delta C-13(CH4) emitted from the polygon wall ranged from 72.5 +/- 1.9%. to-47.3 +/- 1.5%. The same for polygon center ranged from-67.1 +/- 2.0% to-62.4 +/- 1.7%. Almost no difference between delta C-13(CH4) signature of years observed could mean that conditions for methane production are possibly quite stable. With respect to methane emission both permafrost ecosystems are thus very contrasting.

Журнал: WATER RESOURCES, FOREST, MARINE AND OCEAN ECOSYSTEMS CONFERENCE PROCEEDINGS, SGEM 2016, VOL II

Номера страниц: 199-204

ISSN журнала: 13142704

Место издания: SOFIA

Издатель: STEF92 TECHNOLOGY LTD

• Evgrafova Svetlana (RAS, VN Sukachev Inst Forest, SB, Krasnoyarsk, Russia;; )
• Novikov Oleg (RAS, VN Sukachev Inst Forest, SB, Krasnoyarsk, Russia; Siberian Fed Univ, Krasnoyarsk, Russia;; )
• Alexandrov Dmitry (RAS, VN Sukachev Inst Forest, SB, Krasnoyarsk, Russia;; )
• Guggenberger Georg (RAS, VN Sukachev Inst Forest, SB, Krasnoyarsk, Russia; Leibniz Univ Hannover, Inst Soil Sci, Hannover, Germany)

• Web of Science Core Collection