Methane Fluxes in Cold Season: Assessment by Closed Chamber Method

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• 作者：A. V. Smagin ; N. A. Shnyrev ; N. B. Sadovnikova
• 关键词：methane ; bog ecosystems ; winter observations ; emission flows and absorption ; diffusive transport ; photolysis ; mathematical modeling ; wetlands
• 刊名：Eurasian Soil Science
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：49
• 期：2
• 页码：205-212
• 全文大小：499 KB
• 参考文献：1.N. M. Bazhin, “Methane in the atmosphere,” Soros. Obraz. Zh. 6 (3), 52–57 (2000).<br>2.M. V. Glagolev, “Annotated list of literature sources on the results of experimental measurements on the emission of greenhouse gases (CH4 and CO2) from mires of Russia,” Din. Okruzh. Sredy Global’nye Izmeneniya Klim. 1, 100–123 (2010).<br>3.M. V. Glagolev, Candidate’s Dissertation in Biology (Moscow, 2010).<br>4.M. V. Glagolev and A. V. Smagin, “Quantitative assessment of methane emission by the mires: from a soil profile to a region (to the 15th anniversary of the studies in Tomsk oblast),” Tr. Inst. Ekol. Pochvoved., Mosk. Univ., No. 7, 51–83 (2006).<br>5.E. A. Dmitriev, Mathematical Statistics in Soil Science (Moscow State University, Moscow, 1995) [in Russian].<br>6.T. T. Efremova, S. P. Efremov, and N. V. Melent’eva, “The reserves and forms of carbon compounds in bog ecosystems of Russia,” Eurasian Soil Sci. 30 (12), 1318–1325 (1997).<br>7.T. A. Markova, N. F. Elanskii, I. B. Belikov, A. M. Grisenko, and V. V. Sevast’yanov, “Distribution of nitrogen oxides in the near-surface air layer over continental regions of Russia,” Pandia, (2009–2014). http://​www.​pandia.​ru/​text/​77/​465/​16927.​php<br>8.A. V. Naumov, Doctoral Dissertation in Biology (Tomsk State University, Tomsk, 2004).<br>9. Reserves and Fluxes of Carbon in Terrestrial Ecosystems of Russia (Nauka, Moscow, 2007) [in Russian].<br>10. Modern Physical and Chemical Methods of Soil Analysis (Moscow State University, Moscow, 1987) [in Russian].<br>11.A. V. Smagin, L. G. Bogatyrev, L. I. Fedorov, and G. V. Matyshak, “The ratio of experimental and theoretical studies in natural sciences by example of soil science,” Nauka v Shkole 2, 89–111 (2004).<br>12.A. V. Smagin, “Abiotic uptake of gases by organic soils,” Eurasian Soil Sci. 40 (12), 1326–1331 (2007).CrossRef <br>13.A. V. Smagin, Gas Phase of Soils (Moscow State University, Moscow, 2005) [in Russian].<br>14.A. V. Smagin, N. A. Shnyrev, and V. G. Vityazev, “About the theory of profile-gradient assessment of methane emission from the mires during winter,” Ekol. Vestn. Sev. Kavk. 7 (2), 23–29 (2011).<br>15.M. V. Smagina, Candidate’s Dissertation in Biology (Krasnoyarsk, 1988).<br>16.N. A. Shnyrev and M. V. Glagolev, “Database on methane emission by Russian soils,” Proceedings of the Fifth Scientific School “The Mires and Biosphere” (Center of Scientific-Technical Information, Tomsk, 2006), pp. 283–286.<br>17.D. J. Jacob, Introduction to Atmospheric Chemistry (Princeton University Press, Princeton, NJ, 1999).<br>18.L. S. Jackson, N. Carslaw, D. C. Carslaw, and K.M. Emmerson, “Modeling trends in OH radical concentrations using generalized additive models,” Atmos. Chem. Phys., No. 9, 2021–2033 (2009).CrossRef <br>19.K. Yagi, “Methane emission from paddy fields,” Bull. Natl. Inst. Agroenviron. Sci. 14, 96–210 (1997).<br>
• 作者单位：A. V. Smagin (1) (2) (3) <br> N. A. Shnyrev (1) <br> N. B. Sadovnikova (1) <br><br>1. Faculty of Soil Science, Moscow State University, Leninskie gory 1, Moscow, 119991, Russia <br> 2. Institute of Ecological Soil Science, Moscow State University, Leninskie gory 1, Moscow, 119991, Russia <br> 3. Institute of Forestry, Russian Academy of Sciences, ul. Sovetskaya 21, Uspenskoe, Moscow oblast, 143030, Russia <br>
• 刊物主题：Geotechnical Engineering & Applied Earth Sciences;
• 出版者：Springer US
• ISSN：1556-195X

文摘

The results of field studies of methane emission to the atmosphere from different landscape elements of West Siberian oligotrophic bog (Mukhrino test plot, Khanty–Mansi autonomous okrug) in the cold season are discussed. The statistical parameters of the process are estimated, and the high variability of methane fluxes and their deviation from the normal distribution are shown. From October to May, the mean arithmetic and median values of methane fluxes were equal to 0.06 ± 0.01 and 0.02 mg С/(m2 h), respectively, with the sampling ranging from–0.3 to 0.5 mg С/(m2 h). In 22% of cases, the negative fluxes (gas consumption) were observed with the average intensity of–0.03 ± 0.01 mg С/(m2 h) and the median of–0.01 mg С/(m2 h). At the same time, a considerable underestimation of emission values cannot be excluded, because of the methodological problems of the routine calculation of fluxes by the linear approximation of trends in the gas concentration dynamics in the chamber. The alternative calculation models are provided, and the possible reasons for the experimentally observed phenomenon of methane sink recorded in the chambers on the snow cover surface, including photochemical processes, are discussed.