Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. Bio Fuel News .




BIO FUEL
Wood not so green a biofuel
by Staff Writers
Hanover NH (SPX) Jun 14, 2013


File image.

Using wood for energy is considered cleaner than fossil fuels, but a Dartmouth College-led study finds that logging may release large amounts of carbon stored in deep forest soils.

Global atmospheric studies often don't consider carbon in deep (or mineral) soil because it is thought to be stable and unaffected by timber harvesting. But the Dartmouth findings show deep soil can play an important role in carbon emissions in clear-cutting and other intensive forest management practices.

The findings suggest that calls for an increased reliance on forest biomass be re-evaluated and that forest carbon analyses are incomplete unless they include deep soil, which stores more than 50 percent of the carbon in forest soils.

"Our paper suggests the carbon in the mineral soil may change more rapidly, and result in increases in atmospheric carbon dioxide, as a result of disturbances such as logging," said Dartmouth Professor Andrew Friedland, a co-author.

"Our paper suggests that increased reliance on wood may have the unintended effect of increasing the transfer of carbon from the mineral soil to the atmosphere. So the intended goal of reducing carbon in the atmosphere may not be met."

The federal government is looking to wood, wind, solar, hydropower and other renewable energy sources to address concerns about climate change and energy security.

Woody biomass, which includes trees grown on plantations, managed natural forests and logging waste, makes up about 75 percent of global biofuel production. Mineral soil carbon responses can vary highly depending on harvesting intensity, surface disturbance and soil type.

"Analysis of forest carbon cycles is central to understanding and mitigating climate change, and understanding forest carbon cycles requires an in-depth analysis of the storage in and fluxes among different forest carbon pools, which include aboveground live and dead biomass, as well as the belowground organic soil horizon, mineral soil horizon and roots," Friedland said.

Co-authors included Dartmouth's Thomas Buchholz, a former post-doctoral student, and Claire Hornig, a recent undergraduate student, and researchers from the University of Vermont, Lund University in Sweden and the Vermont Department of Forest, Parks and Recreation. The research was supported by awards to Friedland from the Northeastern States Research Cooperative and the Porter Fund.

Friedland's research focuses on understanding the effects of atmospheric deposition of pollutants and biomass harvesting on elemental cycling processes in high-elevation forests in the Northeastern United States.

He considers many elements including carbon, trace elements such as lead and major elements such as nitrogen and calcium. He also is examining issues related to personal choices, energy use and environmental impact.

The results appear in the journal Global Change Biology-Bioenergy.

.


Related Links
Dartmouth College
Bio Fuel Technology and Application News






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





BIO FUEL
Biofuels will play integral role in California's energy future
Berkeley CA (SPX) Jun 12, 2013
Biofuels developed from plant biomass and purpose-grown crops can substantially move California toward its ambitious energy goals, a new report says, but only through the wise allocation of feedstocks and the success of energy efficiency measures throughout the state. That's the conclusion of "California Energy Future: the Potential for Biofuels," a report of the California Council on Scie ... read more


BIO FUEL
Goal Zero and In-Q-Tel Sign Strategic Agreement to Develop Deployable Power Systems

MECASOLAR leads a European R and D project

1.3GW of PV Installations Eliminated by EU Anti-Dumping Duties in 2013

Testing Artificial Photosynthesis

BIO FUEL
Wood not so green a biofuel

Biofuels will play integral role in California's energy future

Climate change raises stakes on US ethanol policy

Scotland gives green light to $710M wood biomass heat-power plant

BIO FUEL
Britain rolls out offshore wind power investment stimulation plan

Prysmian Group To Showcase At 2013 RenewableUK Offshore Wind In Manchester

Quantum To Buy 10 Megawatt Trout Creek Wind Farm

Enovos opens 10 MW wind farm

BIO FUEL
DOE to move forward on LNG export applications

Iraq slashes production plan, but doubts remain

Philippines coast guard officials face possibe charges

New showdown looms as Sudan threatens south's oil

BIO FUEL
China is outsourcing carbon within its own borders

UMD scientists publish key findings on regional, global impact of trade on the environment

Wood as energy source not as 'green' in carbon terms as thought

Asia needs 'energy settlement'

BIO FUEL
EU takes Germany to task over new auto coolant rules

Study finds speech-to-text risks behind the wheel

China auto sales growth slows in May: group

French electric car share program sets sights on Indy

BIO FUEL
Tillage and reduced-input rotations affect runoff from agricultural fields

URI, firm developing techniques for tuna aquaculture

How does inbreeding avoidance evolve in plants

How do you feed nine billion people

BIO FUEL
NSBRI Industry Forum Launches Grant Opportunity To Drive Spaceflight Product Development

Filmmaking magic with polymers

Chilean, U.S. firms join effort to expand e-waste recycling

Space Debris - One Solution




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement