Navigation Links
Wood not so green a biofuel
Date:6/11/2013

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. The results appear in the journal Global Change Biology-Bioenergy: http://onlinelibrary.wiley.com/doi/10.1111/gcbb.12044/abstract

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.


'/>"/>

Contact: John Cramer
john.d.cramer@dartmouth.edu
603-646-9130
Dartmouth College
Source:Eurekalert

Related biology news :

1. Research on geological storage of CO2 to reduce greenhouse gas emissions
2. Living biofilters could reduce greenhouse gas emissions
3. Elevated carbon dioxide making arid regions greener
4. Recovery of Hawaiian green sea turtles still short of historic levels, Stanford-led study suggests
5. Going green: Nation equipped to grow serious amounts of pond scum for fuel
6. Cameroon researcher wins prestigious Green Oscar
7. Zeal to ensure clean leafy greens takes bite out of riverside habitat in California
8. More food and greener farming with specialised transporters for plants
9. Will green tea help you lose weight?
10. Green spaces may boost well-being for city slickers
11. Surprising findings on hydrogen production in green algae
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/23/2017)... March 23, 2017 The report "Gesture Recognition and Touchless ... and Geography - Global Forecast to 2022", published by MarketsandMarkets, the market is ... of 29.63% between 2017 and 2022. Continue Reading ... ... ...
(Date:3/22/2017)... NEW YORK , March 21, 2017 /PRNewswire/ ... Customer Marketing Cloud used by retailers such as ... in its platform — Product Recommendations and Replenishment. Using ... to give more personalized product and replenishment recommendations ... purchases, but also on predictions of customer intent ...
(Date:3/20/2017)... Pa. , March 20, 2017 PMD ... 2.0 personal spirometer and Wellness Management System (WMS), a ... Founded in 2010, PMD Healthcare is a Medical ... with a mission dedicated to creating innovative solutions that ... life. With that intent focus, PMD developed the first ...
Breaking Biology News(10 mins):
(Date:5/18/2017)... Mass. (PRWEB) , ... May 18, 2017 , ... ... the procedure on April 28, 2017 at the Prince Of Wales Private Hospital. ... cervical disc at level C6-C7. The patient failed conservative treatments prior to undergoing ...
(Date:5/18/2017)... VIRGINIA (PRWEB) , ... May 17, 2017 , ... NDA ... business executive and former CEO of Eurofins Advantar Laboratories and President of Pharmaceutical Development ... addition to his position at Eurofins and Cardinal Health, he was former Chief Operating ...
(Date:5/18/2017)... , ... May 17, 2017 , ... ... and business process optimization firm for the life sciences and healthcare industries, is ... UDIs and Traceability for Medical Devices conference in Brussels, Belgium. , Crowley played ...
(Date:5/18/2017)... ... May 17, 2017 , ... Many complicated neurological disorders ... develop Alzheimer’s disease, while men are at greater risk for Parkinson’s disease. Understanding ... is the aim of a research program at Worcester Polytechnic Institute (WPI) funded ...
Breaking Biology Technology: