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Carbon Sequestration in Agriculture and Forestry |  |
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| Sink Category |
1990 |
1996 |
1997 |
1998 |
1999 |
2000 |
2001 |
2002 |
| Forests |
(846.6) |
(964.1) |
(730.1) |
(617.8) |
(588.4) |
(602.3) |
(600.2) |
(600.8) |
| Urban Trees |
(58.7) |
(58.7) |
(58.7) |
(58.7) |
(58.7) |
(58.7) |
(58.7) |
(58.7) |
| Agricultural Soils |
(26.5) |
(19.0) |
(19.3) |
(16.9) |
(17.3) |
(19.0) |
(20.7) |
(21.2) |
| Landfilled Yard Trimmings |
(26.0) |
(13.4) |
(12.9) |
(12.4) |
(11.3) |
(10.1) |
(10.2) |
(10.1) |
| Total |
(957.9) |
(1055.2) |
(821.0) |
(705.8) |
(675.8) |
(690.2) |
(689.7) |
(690.7) |
Note: Parentheses indicate net sequestration.
Totals may not sum due to independent rounding. Lightly shaded areas indicate
values based on a combination of historical data and projections. All
other values are based on historical data only.
Source: EPA
(2004) Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2002.
Net CO2 Flux from Land-Use Change and Forestry (Units converted to TgC Eq. See Units for Explanation)
| Sink Category |
1990 |
1996 |
1997 |
1998 |
1999 |
2000 |
2001 |
2002 |
| Forests |
(231) |
(263) |
(199) |
(168) |
(161) |
(164) |
(164) |
(164) |
| Urban Trees |
(16) |
(16) |
(16) |
(16) |
(16) |
(16) |
(16) |
(16) |
| Agricultural Soils |
(7) |
(5) |
(5) |
(5) |
(5) |
(5) |
(6) |
(6) |
| Landfilled Yard Trimmings |
(7) |
(4) |
(4) |
(3) |
(3) |
(3) |
(3) |
(3) |
| Total |
(261) |
(288) |
(224) |
(192) |
(184) |
(188) |
(188) |
(188) |
Note: 1 Tg C = 1 teragram carbon
= 1 million metric tons carbon. Parentheses indicate net sequestration.
Totals may not sum due to independent rounding. Lightly shaded areas indicate
values based on a combination of historical data and projections. All
other values are based on historical data only.
Source: EPA (2004) Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2002.
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Sequestration Rates in U.S. Forests, Urban Trees and Agricultural Soils