| U.S. carbon emissions/sequestration
from agricultural sources (MMT of carbon), 1990-95 |
| |
1990 |
1991 |
1992 |
1993 |
1994 |
1995 |
| Gas, diesel, LP gas * |
11.83 |
11.87 |
13.6 |
13.38 |
14.44 |
13.48 |
| N,P,K (manufacture & distribution)
* |
16.55 |
16.74 |
17 |
16.95 |
18.56 |
17.33 |
| Electicity * |
2.81 |
2.75 |
3.13 |
3.19 |
3.22 |
3.23 |
| Pesticide (manufacture &
distribution) * |
1.83 |
1.83 |
1.83 |
1.83 |
1.83 |
1.83 |
| Subtotal |
33.0 |
33.2 |
35.6 |
35.4 |
38.1 |
35.9 |
| Carbon from ag soils (low)
** |
-37.0 |
-37.0 |
-37.0 |
-37.0 |
-37.0 |
-37.0 |
| Carbon from ag soils (high)
** |
7.5 |
7.5 |
7.5 |
7.5 |
7.5 |
7.5 |
| Total carbon (low) |
-4.0 |
-3.8 |
-1.4 |
-1.7 |
1.1 |
-1.1 |
| Total carbon (high) |
40.5 |
40.7 |
43.1 |
42.9 |
45.6 |
43.4 |
|
Sources:
* Lewandrowski et al. (2000)
** Eve et al. (2000). Range reflects different assumptions
regarding quantity of land in no-till and carbon sequestration
levels under no-till. Negative numbers imply a positive level
of carbon sequestration.
|
|
|
