ISSN: 0024-1148 Russian Journal of Forest Science. 2014, No. 4, pp. 56-66


SPATIOTEMPORAL CONTROLS OF SOIL CO2 FLUXES IN SOUTH TAIGA SPRUCE FOREST IN EUROPEAN RUSSIA


D. V. Karelin1,2,3, A. V. Pochikalov2, D. G. Zamolodchikov1,2, M. L. Gitarskii3
1Center of Forest Ecology and Productivity, Russian Academy of Sciences
Profsoyuznaya st. 84/32 bldg. 14, Moscow, 117997
2Lomonosov Moscow State University
Leninskie Gory 1, Moscow, 119991
3Institute of Global Climate and Ecology
Glebovskaya st. 20b, Moscow, 107258
E-mail: dzamolod@cepl.rssi.ru


Received 24 February 2014


5-year long studies of carbon dioxide soil surface emissions carried out in south taiga spruce forest (Valday region, North-West of Russia) revealed the spatiotemporal factors at different scales from hours and days to seasons and years, and from micro- to mesobiotopes. The приземный air temperature, upper soil layer temperature and moisture, sum of precipitation before measurement, and also litter thickness, distance to the nearest log of spruce, distance to the nearest dry standing spruce, and coefficient of soil respiration rate increase were amongst the most significant soil respiration controls. The temperature at 1 cm depth in soil turned out to be the only significant parameter, which was common for spatial and temporal analyses of soil surface СО2 emission. Our data strongly advocate for the necessity of concurrent analysis of spatial and temporal factors, when estimating or predicting soil surface CO2 fluxes. 



  • Acknowledgements: This study was accomplished in the framework of research of the Federal Service for Hydrometeorology and Environmental Monitoring of Russia, and it was partly supported by the Russian Foundation for Basic Research and the Russian Geographical Society (13-05-41478 RGO_A).

  • Keywords: soil respiration, soil CO2 emission, spatiotemporal variability, boreal ecosystem.


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