D P M Zaks et al 2009 Environ. Res. Lett. 4 044010 doi:10.1088/1748-9326/4/4/044010
D P M Zaks1,4, C C Barford1, N Ramankutty2 and J A Foley3
Show affiliationsGreenhouse gases from the combination of land use change and agriculture are responsible for the largest share of global emissions, but are inadequately considered in the current set of international climate policies. Under the Kyoto protocol, emissions generated in the production of agricultural commodities are the responsibility of the producing country, introducing potential inequities if agricultural products are exported. This study quantifies the greenhouse gas emissions from the production of soybeans and beef in the Amazon basin of Brazil, a region where rates of both deforestation and agricultural exports are high. Integrating methods from land use science and life-cycle analysis, and accounting for producer–consumer responsibility, we allocate emissions between Brazil and importing countries with an emphasis on ultimately reducing the greenhouse gas impact of food production. The mechanisms used to distribute the carbon emissions over time allocate the bulk of emissions to the years directly after the land use change occurred, and gradually decrease the carbon allocation to the agricultural products. The carbon liability embodied in soybeans exported from the Amazon between 1990 and 2006 was 128 TgCO2e, while 120 TgCO2e were embodied in exported beef. An equivalent carbon liability was assigned to Brazil for that time period.
92.60.Fm Boundary layer structure and processes
Issue 4 (October-December 2009)
Received 14 May 2009, accepted for publication 3 November 2009
Published 17 November 2009
D P M Zaks et al 2009 Environ. Res. Lett. 4 044010
A. B. Nych et al 2008 EPL 81 16001
Th. Baxevanis 2008 EPL 83 46004
2009 J. Neural Eng. 6 069901
R A Pitts et al 2005 Plasma Phys. Control. Fusion 47 B303
P. Jenniskens and D. F. Blake 1996 ApJ 473 1104
I K Bartol et al 2008 Bioinspir. Biomim. 3 014001
M. Hiller et al 2008 EPL 82 40006
M. Assafin et al. 2003 The Astronomical Journal 125 2728
N. A. Sinitsyn and I. Nemenman 2007 EPL 77 58001