What is the Potential for Carbon Sequestration by the Terrestrial Biosphere?
Conference
·
OSTI ID:985621
This paper is a summary discussion of technical information about carbon sequestration (CS) in terrestrial ecosystems that was presented in various Sessions of the First National Conference on Carbon Sequestration, Washington D.C., May 14-17, 2001. The Earth's mantle of vegetation naturally removes CO2 from the atmosphere, and some of this carbon then becomes sequestered in biomass products and soil. As discussed at this National Conference on Carbon Sequestration, mechanisms of terrestrial biosphere carbon sequestration (TBCS) represent important options for sequestration of excess CO2 from combustion of fossil fuels. A number of studies suggest that the potential quantity of TBCS may be significant, and that economic aspects appear attractive; therefore we conclude the following points: ? Quantity of annual carbon sequestration by terrestrial ecosystems can be measured at a reasonable accuracy; ? Median measure of current NEP or sequestration by forested ecosystems is 3 metric tons per hectare per year; ? Current calculated global TBCS for forests is ~3Gt C per yr; ? Estimated future TBCS capacity is 200-250 Gt C using available knowledge and current technology and management practice at nominal estimated cost of $10-20 per metric ton of C; ? It seems reasonable to assume that advanced science, technology, and management can double the capacity at low additional costs. ? TBCS option offers potential for sequestering more than 50 percent of projected excess CO2 that will have to be managed over the next century.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 985621
- Report Number(s):
- PNNL-SA-34911; KP1702020
- Country of Publication:
- United States
- Language:
- English
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