February 28, 2007
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Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 6, NUMBER 3, MARCH 1993
CARBON CYCLE MANAGEMENT
"Temperate Forest as a Carbon Storage Reservoir for Carbon Dioxide
Emitted by Coal-Fired Generating Stations: A Case Study for New Brunswick,
Canada," B. Freedman (Dept. Biol., Dalhousie Univ., Halifax B3H 4J1, Can.),
F. Meth, C. Hickman, For. Ecol. Mgmt., 55(1-4), 15-29, Dec.
Offsetting CO2 emissions from a 200 MW generating station with unmanaged
forest would require an area equivalent to 8% of the forested area of the
province. A much smaller area would be required if farmland were reforested.
Evaluates the influence of management approaches on carbon fixation. The area of
land that would have to be reserved to offset such a power station would require
unrealistically large changes in land use in New Brunswick.
"The Potential for Short-Rotation Woody Crops to Reduce U.S. CO2
Emissions," R.L. Graham (Environ. Sci. Div., Oak Ridge Nat. Lab., POB 2008,
Oak Ridge TN 37831), L.L. Wright, A.F. Turhollow, Clim. Change, 22(3),
223-238, Nov. 1992.
With current climate, present production and conversion technologies, and a
conservative estimate of the available land base, short-rotation woody crops
(SRWC) could displace 3-6% of the current U.S. emissions. Less conservative
assumptions yield 20% of emissions. The carbon mitigation potential per unit of
land is larger with the substitution of SRWC for coal-based electricity
production than with the substitution of SRWC derived ethanol for gasoline.
"Carbon Dioxide Fixation by a Unicellular Green Alga Oocystis
Sp.," T. Takeuchi (Adv. Sci. Res. Ctr., Univ. Tokyo, 4-6-1 Komaba, Meguro
Ku, Tokyo 153, Japan), K. Utsunomiya et al., J. Biotechnol., 25(3),
261-267, Sep. 1992. Experiments with a highly CO2-tolerant alga suggest it may
be suitable for fixing atmospheric carbon to offset anthropogenic emissions.
"Carbon Storage in Lake States Aspen Ecosystems," D.H. Alban
(N. Central For. Exper. Sta., USDA For. Serv., 1831 Hwy. 169 E, Grand Rapids MN
55744), D.A. Perala, Can. J. For. Res., 22(8), 1107-1110, Aug.
Measurements of soil and vegetation carbon indicate that aspen grown on
40-year rotations on good soils will sequester several times as much carbon per
year as old-growth forest.
"Mitigating Climate Change by Sequestering Carbon in Soils--A
Hypertext-Based Scientific Assessment," H.M. Rauscher (addr. immed. above),
D.H. Alban, D.W. Johnson, AI Applic., 6(2), 62-63, 1992.
"Agriculture and the Greenhouse Effect: Consumption of Carbon
Dioxide at Different Intensities of Land Management," M. Smukalski
(Bundesforsch. Anstalt Landwirtschaft, Braunschweig Volkenrode, Inst.
Agrarrelevante Klimaforsch., Muncheberg, Ger.), J. Rogasik, K.J. Kunkel, Landbauforschung
Volkenrode, 42(2), 55-61, 1992. In German.
Examines the impact on carbon uptake of various agricultural approaches in
Germany (fallow land, extensive farming, cultivation of renewable resources).
"Cost and Performance of CO2 Storage in Forestry Projects,"
J.N. Swisher (Environ. & Energy Sys. Studies, Univ. Lund, Gerdagatan 13,
S-22362 Lund, Swed.), Biomass & Bioenergy, 1(6), 317-328,
Presents a comprehensive and consistent accounting method for the costs and
carbon flows of different categories of forestry projects, and applies it to a
set of projects proposed in Central America under the Tropical Forest Action
Plan. The costs of carbon savings mostly fall between $5 and $13 per ton, but
the projects also promise socioeconomic benefits at the local level, provided
there is adequate funding, training and institutional support. The total CO2
storage potential is significant, but not enough to offset more than a few
percent of global fossil CO2 emissions.
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