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CARBON BUDGET OF UNITED STATES FORESTS
Q: How much carbon could
be sequestered if more trees were planted?
A: The amount of carbon sequestered
is a function of the area on which forest landowners could be convinced
to plant trees. Incentives include Federal cost-shares, forest management
assistance programs, and tax credits, and generally are targeted
at land which is marginal for agriculture. We projected carbon sequestered
under a scenarios which require a $110 million/year investment for
ten years. We adopted area estimates from a study by Moulton and
Richards (1990). They estimated how much area would be planted in
forests if $110 million/year were invested for ten years to provide
incentives for private landowners to plant trees. Funding was assumed
to be distributed across regions in a way to maximize carbon sequestration.
About an additional 2 MMT/yr. of C (Birdsey and Heath, 1995) could
be sequestered above the base scenarios over a fifty year period.
For more information about the scenario, see Haynes and others (1995).
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Comparison of carbon
storage and flux for current base run and reforestation scenarios,
all ecosystem components, private timberland in the conterminous
U.S., 1990-2040.
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| Year/Period |
Base Run
|
Planting M/R
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| Storage: |
---million metric tons---
|
|
1990
2000
2010
2020
2030
2040
|
21,621
22,394
22,964
23,271
23,401
23,390
|
21,621
22,356
22,913
23,306
23,468
23,492
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| Flux: |
---million metric tons per year---
|
|
1990-2000
2000-2010
2010-2020
2020-2030
2030-2040
|
77
57
31
13
(1)
|
74
56
39
16
2
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SOURCE: Birdsey, R. A., and L. S. Heath. 1995.
Carbon changes in U.S. forests. IN: Joyce, L. A., ed. Productivity
of America's forests and climate change. U.S. Department of Agriculture,
Forest Service, General Technical Report RM-271, Rocky Mountain
Forest and Range Experiment Station. Ft. Collins, CO. 70 p.
References:
Moulton, R. J., and K. R. Richards. 1990. Costs of sequestering
carbon through tree planting and forest management in the United
States. U.S. Department of Agriculture Forest Service General Technical
Report WO-58, Washington, DC. 47 p.
Haynes, R. W., D. M. Adams, and J. R. Mills. 1995. The 1993 RPA
timber assessment update. U.S. Department of Agriculture, Forest
Service, General Technical Report RM-259, Rocky Mountain Forest
and Range Experiment Station. Ft. Collins, CO. 66 p.
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