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Carbon Sequestration in Agriculture and Forestry
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Photo collage of carbon sinks in agriculture and forestyMethane (CH4) and Nitrous Oxide (N2O) Emissions from U.S. Agriculture

Emissions from Agriculture (Units converted to Tg CO2 Eq. See Units for Explanation)

Gas/Source 1990 1995 2000 2005 2006 2007

CH4

 171.4 186.3 180.5 185.5 186.8 190
Enteric Fermentation 133.2 143.6 134.4 136 138.2 139
Manure Management 30.4 34.5 37.9 41.8 41.9 44
Rice Cultivation 7.1 7.6 7.5 6.8 5.9 6.2
Field Burning of Agricultural Residues 0.7 0.7 0.8 0.9 0.8 0.9

N20

 212.8 215.6 218.9 225.5 223.5 223.1
Agricultural Soil Management 200.3 202.3 204.5 210.6 208.4 207.9
Manure Management 12.1 12.9 14 14.2 14.6 14.7
Field Burning of Agricultural Residues 0.4 0.4 0.5 0.5 0.5 0.5

Total

 384.2 402 399.4 410.8 410.3 413.1

Note: Totals may not sum due to independent rounding
Source: EPA (2009) Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2007.

 

Emissions from Agriculture (Units in Gigagrams (Gg) of CH4 or N20 with no conversion to CO2 equivalent)

Gas/Source 1990 1995 2000 2005 2006 2007

CH4

 8,161 8,873 8,597 8,833 8,894 9,047
Enteric Fermentation 6,342 6,837 6,398 6,474 6,580 6,618
Manure Management 1,447 1,642 1,804 1,991 1,993 2,093
Rice Cultivation 339 363 357 326 282 293
Field Burning of Agricultural Residues 33 32 38 41 39 42

N20

 686 696 706 727 721 720
Agricultural Soil Management 646 653 660 679 672 671
Manure Management 39 42 45 46 47 47
Field Burning of Agricultural Residues 1 1 1 2 2 2

Note: Totals may not sum due to independent rounding.
Source: EPA (2009) Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2007.

 
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