Temporal Variability of Methane Emission from a Raised Bog in Western Siberia

被引：0

作者：

Veretennikova, E. E. ^{[1
,2
]}

Dyukarev, E. A. ^{[1
,3
]}

Kurina, I. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Monitoring Climat & Ecol Syst, Siberian Branch, Tomsk 634055, Russia

[2] Siberian State Med Univ, Tomsk 630050, Russia

[3] Yugra State Univ, Khanty Mansiysk 628012, Russia

来源：

ATMOSPHERIC AND OCEANIC OPTICS | 2022年 / 35卷 / 06期

关键词：

Western Siberia; oligotrophic bog; methane emission; temperature of peat deposits; CARBON-DIOXIDE; PEATLANDS; FLUXES; REGION;

D O I：

10.1134/S1024856022060288

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Seasonal variability of CH4 fluxes from an oligotrophic anthropogenically disturbed bog in western Siberia (south of Tomsk oblast) is analyzed. Methane fluxes were measured by the closed static chamber method. The results show a strong variation in CH4 (from -0.07 to 4.40 mg m(-2) h(-1)). The total CH4 flux from the bog surface during the vegetation season varies from 0.99 to 2.94 g m(-2). The seasonal dynamics of CH4 fluxes are characterized by a summer maximum and is strongly connected with the peat temperature. The use of an exponential function of the peat temperature at different depths explains 81-95% of the variability of the CH4 flux. In general, our data show the importance of studying the CH4 emission from the surface of bog ecosystems under the anthropogenic load. The comprehensive monitoring is to allow estimating the contribution of Western Siberian bogs of this type to global climate change.

引用

页码：769 / 774

页数：6

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