Evaluation of selected grass species for soil and water conservation, and carbon sequestration under farmland at Jimma Zone, southwestern Ethiopia
Geoengineering News
Tom Goreau
Vetiver grass is the best tropical grass for erosion control, as well as for soil carbon sequestration, biochar production, sewage treatment, and many valuable economic products!
Those wanting more information should go to the International Vetiver Network web site:
You can download free around half a dozen chapters showing some of Vetiver’s applications to regenerating soils, soil productivity, carbon sequestration, and global climate etc. at:
Geotherapy: Innovative Methods of Soil Fertility Restoration, Carbon Sequestration, and Reversing CO2 Increase
VETIVER IS THE SINGLE MOST IMPORTANT PLANT FOR REGENERATING TROPICAL SOIL CARBON AND ECONOMIC PRODUCTIVITY!
Thomas J. F. Goreau, PhD
President, Global Coral Reef Alliance
Chief Scientist, Biorock Technology Inc., Blue Regeneration SL
Technical Advisor, Blue Guardians Programme, SIDS DOCK
37 Pleasant Street, Cambridge, MA 02139
gor...@globalcoral.org
www.globalcoral.org
Phone: (1) 857-523-0807 (leave message)
Books:
Geotherapy: Innovative Methods of Soil Fertility Restoration, Carbon Sequestration, and Reversing CO2 Increase
Innovative Methods of Marine Ecosystem Restoration
On the Nature of Things: The Scientific Photography of Fritz Goro
Geotherapy: Regenerating ecosystem services to reverse climate change
No one can change the past, everybody can change the future
It’s much later than we think, especially if we don’t think
Those with their heads in the sand will see the light when global warming and sea level rise wash the beach away
“When you run to the rocks, the rocks will be melting, when you run to the sea, the sea will be boiling”, Peter Tosh, Jamaica’s greatest song writer
“The Earth is not dying, she is being killed” U. Utah Phillips
“It is the responsibility of intellectuals to speak the truth and expose lies” Noam Chomsky
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Geoengineering News
From: Philip Kithil
Biogeochemical Modeling of Ocean Carbon Uptake in Artificial Upwelling: An Analytical Solution
Yifeng Wang1 and Philip Kithil2
1Sandia National Laboratories, Albuquerque, New Mexico, USA; yw...@sandia.gov
2Sea Upwelling Company, Inc., Santa Fe, New Mexico; ph...@sea-up.life
Abstract: A 1-D biogeochemical model is formulated for CO2 uptake in an artificial upwelling (AU) system with an array of pump pipes. The model explicitly accounts for the gas exchange at the ocean-atmosphere interface, the primary production in the euphotic layer, and the biomass settling and degradation in the water column. The model is solved analytically to clarify the key controlling factors for carbon uptake. The model analysis shows that CO2 uptake increases quadratically with surface wind speed and then approaches a plateau limited by nutrient availability. A large fraction of biomass produced in the euphotic layer drops out of the water column through settling and thus serves as an important vehicle for carbon sequestration in an AU system. Carbon uptake is found to depend on the water pumping rate, and an optimal pumping rate is shown to exist for maximum carbon uptake. Carbon uptake rate is also found to increase monotonically with the nutrient concentration, thus making the nutrient concentration a most important parameter for controlling carbon uptake in an AU system. The model analysis further reveals that there exists a critical minimum value for parameter vu or nb, below which no sustainable primary production in the euphotic layer is possible. A necessary condition for maintaining a sustainable primary production is delineated.
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