Schepaschenko, D.

Schepaschenko, M.

Shvidenko, A.

International Institute for Applied Systems Analysis (IIASA)

Geophysical Research AbstractsVol. 14, EGU2012-8544, 2012EGU General Assembly 2012© Author(s) 2012Carbon balance of Russian agricultural landD. Schepaschenko (1,2), A. Shvidenko (1,3), and M. Schepaschenko (4)(1) International Institute for Applied Systems Analysis, Laxenburg, Austria (schepd@iiasa.ac.at), (2) Moscow State ForestUniversity, Mytischi, Moscow reg., Russia, (3) Sukachev Institute of Forest, Siberian Branch of the Russian Academy ofScience, Krasnoyarsk, Russia, (4) Russian Institute of Continuous Education in Forestry, Pushkino, Moscow reg., Russia(mariaschep@gmail.com)Russia managed 218.7 mln ha agricultural land (2009) in accordance with national statistics (FSSS, 2011:http://www.gks.ru/dbscripts/Cbsd/DBInet.cgi#1). Among that, 91.75 mln ha is arable land; 92.05 mln ha – hay-field and pasture; 34.9 mln ha – abandoned arable and fallow. Abandoned arable area is not indicated directly inthe statistics, but can be calculated as a difference between “arable” and “cultivated” area.We estimated carbon balance of agricultural land by accounting carbon fluxes. Carbon sink includes:net primary productivity (NPP), applying fertilizes and liming. Carbon losses include soil respiration(SR), harvest and lateral flux. The initial data (cultivated area and harvest distribution by regionsand crop) was derived from national agriculture statistics (FSSS, 2011). NPP was estimated via har-vest and set of regression models. Average NPP for agricultural land was estimated at 435 g Cm−2 (530 g C m−2 for crops). Soil respiration was calculated by a model (Mukhortova et. al.,1011: http://www.iiasa.ac.at/Research/FOR/forest_cdrom/Articles/Mukhortova_2011_IBFRA_SR.pdf) developedfor Russia which is based on all available empirical data and accounted for climatic parameters, soil type and man-agement practice. Average SR of agricultural land is 344 g C m−2 (372 g C m−2 for the cropland). We applied theIPCC method (National inventory, 2010; IPCC, 2006) for fertilizer and lateral fluxes assessment.The total carbon balance of agricultural land is almost in equilibrium (-0.04 t C ha−1) in spite of arable land is acarbon source (-0.84 t C ha−1). The highest sink (1.21 t C ha−1) is provided by abandoned land. Carbon fluxes varysubstantially depending on seasonal weather conditions. For example grains’ NPP in 2010 (dry and hot summerin major agricultural regions of European Russia) was estimated at 32% less compare to 2009 and the total carbonbalance of this land category decreased by order of magnitude.We used Russian land cover (Schepaschenko et al., 2011: http://www.tandfonline.com/doi/abs/10.1080/1747423X.2010.511681)with 1 km resolution to produce a map of spatial distribution of agriculture related carbon fluxes. More details canbe found here: www.iiasa.ac.at/Research/FOR/hlc/

Carbon balance of Russian agricultural land

Abstract

Similar works

Full text

Available Versions

International Institute for Applied Systems Analysis (IIASA)