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Published online 6 July 2006
Published in J Environ Qual 35:1413-1427 (2006)
DOI: 10.2134/jeq2005.0157
© 2006 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Agricultural Soil Greenhouse Gas Emissions

A Review of National Inventory Methods

Erandathie Lokupitiya* and Keith Paustian

Department of Soil and Crop Sciences and Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO 80523


Figure 1
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  		Fig. 1. Percent contribution of agricultural sector greenhouse gas emissions to increased radiative forcing attributed to anthropogenic enhancement of the greenhouse effect (Intergovernmental Panel on Climate Change, 1996).

 

Figure 2
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  		Fig. 2. Nitrous oxide emission from agricultural soils as a fraction of cumulative N2O emissions by Annex 1 countries from 1990–2000.

 

Figure 3
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  		Fig. 3. Nitrous oxide emission from agricultural soils by the United States and all Annex 1 countries from 1990–2000.

 

Figure 4
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  		Fig. 4. Relative impact of agricultural soils to the overall agricultural sector, in terms of global warming potential (computed as absolute values for both sinks and sources combined for CO2, N2O, and CH4), as a percentage of the total agricultural sector emissions for some selected Annex 1 countries. "Other" emissions represent combined N2O and CH4 emissions from burning of savannas and crop residues and CH4 from rice.

 

Figure 5
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  		Fig. 5. Methods used for estimating N2O emissions by Annex 1 countries based on the National Inventory Reports (NIRs) and Common Reporting Formats (CRFs) submitted in 2004. T1, Tier 1; T2, Tier 2, NR/NO, not reported or not occurring.

 

Figure 6
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  		Fig. 6. Methods used for estimating CO2 emissions by Annex 1 countries based on the National Inventory Reports (NIRs) and Common Reporting Formats (CRFs) submitted in 2004. Mineral, stock changes in C from mineral soils; organic, emissions from cultivated organic soils; liming, emissions due to liming; T1, Tier 1; T2, Tier 2; T3, Tier 3; NR/NO, not reported or not occurring.

 




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