Scholarly record
EXPERIMENTAL ASSESSMENT OF GREENHOUSE GASSES EMISSION (CO2, CH4) FROM DECOMPOSED COARSE WOODY DEBRIS IN NORTHERN TAIGA FORESTS OF CENTRAL SIBERIA
Abstract
The aim of this study was experimental assessing the emission of greenhouse gasses (CO2, CH4) from decomposed coarse woody debris in northern boreal forests of Siberia, where the main forest-forming species is larch (Larix gmelinii (Rupr.) Rupr.). Logs samples were collected in northern boreal larch forests of Central Evenkia (64пїЅN, 100пїЅE) at different stages of decomposition and placed in gas-tight boxes. Gas samples were measured in dynamics: at the beginning of the experiment and after 3 hour, 24 hours, after 3 and 6 days of incubation using Picarro G2201-i analyzer. Totally 12 samples were measured. Samples were divided into the three decay classes, based on visual and physical properties. The main basis for division is wood density and presence of bark and branches: decomposition class I - wood has not lost its solidity, stems have bark and branches; decomposition class II - wood has lost some of its solidity, bark easily flakes from wood, but bark and branches are presented on the stems; decomposition class III - wood has almost fully lost its initial solidity, some bark and large branches remain on the stems. It was found that carbon dioxide concentration increased gradually during incubation for logs at all decomposition stages. Coarse woody debris at early stages of decomposition produced 3.3-11.4 ?g CO2 cm-3 h-1 for the decomposition class I and 1.9-6.2 ?g CO2 cm-3 h-1 for the decomposition class II. Flux of carbon dioxide from coarse woody debris at the advanced stage of decomposition (decomposition class III) was significantly higher and comprised 0.9-12.4 ?g CO2 cm-3 h-1. Carbon dioxide emission showed close correlation with temperature, class of decomposition and on type of rot (white or brown rot fungi consortia decomposed logs). Concentration of methane showed gradual increase of its concentration during 6 days incubation (from 1.84 to 2.87 and 3.57 ppm for I and II decomposition classes).Rate of methane increasing was dependent on temperature. If at the temperature +5пїЅC increasing of methane concentration was slow and was observed only for decomposition class I and II, at the temperature +25пїЅC logs of all decomposition classes increased concentration of methane from 1.82-1.84 ppm of the initial measurement to 2.06-2.87 ppm after the 6 days of incubation.
Publication Impact Profile
Publication details
References15
NASA GISS: Science Briefs: Greenhouse Gases: Refining the Role of Carbon Dioxide". www.giss.nasa.gov. Retrieved, 2016-04-26.
Zamolodchikov D. G. , Utkin A. I., Korovin G. N., Chestnykh O. V. Dynamics of Carbon Pools and Fluxes in Russia's Forest Lands. Russian Journal of Ecology, vol. 36/issue 5, pp 291–301, 2005.
Mukhin V.A., Voronin P.Yu., Mycogenic decomposition of wood and carbon emission in forest ecosystems, Russ. J. Ecol., vol. 38, no. 1, pp. 22–26, 2007.
Komhyr W. D., Gammon R. H., Harris T. B., Waterman L. S., Conway T. J., Taylor W. R., Thoning K. H., Global atmospheric C02 distribution and variations from 1968-1982 NOAA/GMCC C02 flask sample data, J. Geophys. Res., vol. 90, pp. 5567-5596, 1985.
Direct Global Warming Potentials. IPCC Fourth Assessment Report. 2007
Zeikus J. G., Ward J. C., Methane formation in living trees: a microbial origin, Science, vol. 184, pp. 1181-1183, 1974.
Weedon J. T., Cornwell W. K., Cornelissen J. H. C., Zanne A. E., Wirth C., Coomes D. A., Global meta-analysis of wood decomposition rates: a role for trait variation among tree species?, Ecol. Lett., vol. 12, pp. 45–56, DOI: 10.1111/j.1461-0248.2008.01259.x, 2009.
Climate Change 2001: The Scientific Basis. Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change. Third Assessment Report of the Intergovernmental Panel on Climate Change, ed. J. T. Houghton (Cambridge: Cambridge University Press) 2001.
Whalen S . C., Reeburgh W. S., Interannual variations in tundra methane emission: a 4-year time series at fixed sites. Glob. Biogeochem. Cycles, vol. 6, pp.139-159, 1992.
Joabsson A, Christensen T.R., Methane emissions from wetlands and their relationship with vascular plants: an Arctic example., Global Change Biology, vol. 7, pp. 919–932, 2001.
Fung I., John J., Lemer J., Matthews E., Prather M., Steele L. P., Fraser P. J. Three-dimensional model synthesis of the global methane budget. J. Geophys. Res., Y6(07), pp. 13,033-13,065, 1991.
Forest ecosystems of Yenisey meridian. Novosibirsk: SB RAS. 2002. pp. 206-287. (In Russian)
Schimel D. S., House J. I., Hibbard K. A., et al., Recent patterns and mechanisms of carbon exchange by terrestrial ecosystems, Nature, vol. 414, pp. 169-172, 2001.
Climatic Atlas of USSR, vol. 1, Hydrometeoizdat, Moscow, 1960 (In Russian).
Fraver S., Wagner R. G., Day M., Dynamics of coarse woody debris following gap harvesting in the Acadian forest of central Maine, USA. Canadian Journal of Forest Research, vol. 32, pp. 2094-2105, 2002.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
